Glossary

Definitions with no superscript have been sourced directly from the European Military Airworthiness Document (EMAD 1). Those definitions and terminologies with a superscript * are DASP specific and have been derived or contextualised for Australian use by the Defence Aviation Safety Authority (DASA).

2D Approach Operation *

An approach conducted by reference to instrument displays that provide lateral (directional) navigation information. This includes all Non-Precision Approaches (NPA) flown without requiring reference to vertical navigation guidance.

3D Approach Operation *

An approach conducted by reference to instrument displays that provide both lateral (directional) and vertical navigation information. This includes all Precision Approaches (PA) and Approach Procedures with Vertical guidance (APV) using Satellite Based Augmentation System (SBAS) or Barometric Vertical Navigation (Baro-VNAV). A 3D approach operation is characterised by a Decision Altitude (DA) and does not have a Missed Approach Point.

Above Obstacles (AO) *

The vertical distance between an aircraft and the highest obstacle on the terrain or water surface.

Acceptable Means Of Compliance (AMC) *

Information published by DASA to identify a means of meeting one or more requirements of the DASR. Regulated entities are not required to comply with AMC and may instead propose an Alternative Means of Compliance (AltMoC) to DASA. Any such proposal will be subject to separate assessment by DASA to determine whether the approach is compliant with the DASR.

Acceptance Test And Evaluation (AT&E) *

An acceptance function used by Defence to verify that a system complies with the defined acceptance requirements. AT&E is used to establish specification compliance and verify airworthiness.

Accountable Manager (AM) *

Person designated by the Approved Organisation, and identified in the Organisation Exposition or Compliance Statement, who is accountable for maintaining safety standards required by relevant DASR and any additional standards specified. Typically, this is a key figure who has influence within the organisation and the ability to make appropriate resource decisions.

ACD Equipment*

Equipment employed in ACD via Airdrop, Airland and External Lift on transport or rotary wing Aircraft; including ADE, pallets, restraint devices, chains, straps, nets and loading devices.

Adequate Aerodrome *

An aerodrome on which an aircraft can be operated, taking account of the applicable performance requirements, runway characteristics and other relevant support facilities and services.

ADF Cadets *

A collective reference to the three cadet organisations, namely, the Australian Navy Cadets, Australian Army Cadets and Australian Air Force Cadets (Defence Act 1903, section 62).

Advisory Circular (AC) *

A document issued by the Authority to promulgate important information to the Defence Aviation regulated community but does not mandate any action.

Advisory Material

Material that provides interpretation of technical airworthiness requirements and standards to assist in understanding and implementation. It also provides guidance on methods and procedures that are in compliance with technical airworthiness requirements and standards. Advisory material, including the described methods and procedures, is not mandatory and organisations may choose to follow other means of demonstrating compliance.

Aerial Delivery *

The process of dispatching cargo or stores from an operating aircraft in flight.

Aerial Delivery Equipment

Equipment employed on transport or rotary wing Aircraft in the aerial delivery of materiel; including slings, platforms, containers, parachutes, rigging materials, cloths, cords, tapes, threads and webbing (Note: Aerial delivery equipment does not include equipment employed in the aerial delivery of personnel).       

Aerodrome (AD) *

A defined area on land or water (including any buildings, installations, and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of fixed wing and rotary wing aircraft.

Aerodrome Apron Areas *

The surfaces intended to accommodate aircraft for purposes of loading or unloading air cargo, passengers, fuelling, parking or maintenance, excluding hangars.

Aerodrome Certificate *

A certificate granted to an Aerodrome Operator by the Authority under DASR 139 that certifies the aerodrome meets the technical specifications outlined in its certification basis.

Aerodrome Manager (ADM) *

The representative of the Aerodrome Operator, responsible for ensuring:

a Certified Aerodrome continues to maintain its certified status; and

for non-certified aerodromes, the aerodrome is safe and fit-for-purpose as required.

Aerodrome Manoeuvring Areas *

The surfaces of the aerodrome used for the take-off, landing, and taxiing of aircraft, excluding aprons.

Aerodrome Movement Areas *

A term describing the combined manoeuvring areas and apron areas, excluding hangars.

Aerodrome Operator (AD OPR) *

The Defence organisation accountable for the overall safe operations of a Defence Aerodrome.

Aerodrome Rescue And Fire Fighting (ARFF) *

A service whose principal objective is the preservation of life and materiel in the event of an aircraft accident or incident occurring at, or in the immediate vicinity of, an aerodrome.

Aeronautical Data

A representation of fact, concepts or instructions in a formalised manner suitable for communication, interpretation or processing.

Aeronautical Data Originator* 

An entity responsible for providing source Aeronautical Data and Aeronautical Information to AIS providers for publication in the Integrated Aeronautical Information Package and on aeronautical charts.

Aeronautical Information *

Information and other required data necessary for the safety and efficiency of air navigation.

Aeronautical Information Service (AIS) 

A service established within the defined area of coverage responsible for the provision of Aeronautical Data and Aeronautical Information necessary for the safety, regularity and efficiency of air navigation.

Aeronautical Life Support Equipment (ALSE) *

Safety or mission equipment to be carried or worn by crew or passengers when operating aircraft in a military configuration, role or environment.

Aeronautical Product *

Includes type-certificated or restricted type-certificated aircraft, engines, propellers and AUSMTSO approved Auxiliary Power Units (APU).

Aeroplane *

A power-driven heavier-than-air aircraft deriving its lift in flight chiefly from aerodynamic reactions on surfaces remaining fixed under given conditions of flight, but does not include a power-assisted sailplane.

Air Battle Management (ABM)*

The control of military air operations that may include the control and coordination of integrated air and missile defence, offensive counter-air, strategic attack, close air support and other warfighting or supporting air activities.

Air Battle Management Operations (ABMOps)*

Those ABM operations provided to military operations as defined in the Air Battle Management Operator Certificate (ABMOC) and the accompanying Operations Specification (OpSpec).

Air Battle Management Operator (ABMO)*

A generic term for an organisation certified by a Military Aviation Authority (MAA) to conduct Air Battle Management.

Air Battle Management Operator Certificate (ABMOC)*

A certificate issued by DASA to authorise an Air Battle Management Operator (ABMO) to provide Air Battle Management Operations (ABMOps) as defined in the accompanying Operations Specification (OpSpec) and in accordance with DASR.

Air Capable Ship *

A sea based facility from which aircraft can take-off, be recovered, or routinely receive and transfer logistic support.

Air Cargo Delivery (ACD)* 

A process that involves the loading (including the preparation, composition, configuration, placement and restraint) of air cargo, whatever it may be (including Passengers, freight, paratroopers, animals and EO materials) and the subsequent unloading of that air cargo—either on the ground, surface or while in the air. ACD includes Airland, Airdrop and External Lift.

Air Cargo Delivery Service Provider (ACDSP)*

An organisation approved by DASA to provide an Air Cargo Delivery (ACD) service to a defined scope.

Air Cargo Delivery Service Provider Certificate (ACDSPC)*

A certificate issued by DG DASA to authorise an Air Cargo Delivery Service Provider (ACDSP) to provide Air Cargo Delivery (ACD) Services as defined in the accompanying Operations Specification (OpSpec) and in accordance with DASR ACD.

Air Display*

Any event, or rehearsal for any event, at which Display Flying or Flypasts, are deliberately performed for the purpose of providing an exhibition of Defence Aviation’s capabilities, values and professionalism.

Air Force Interoperability Council (AFIC) *

An international organisation which provides a framework for the air forces of Australia, Canada, New Zealand, United Kingdom and United States to work collaboratively to enhance coalition expeditionary air and space interoperability.

Air-Launched Store

An aircraft store able to be intentionally separated from the aircraft in flight.

Air Navigation Service Provider Certificate *

A certificate issued by the Defence AA to authorise an Air Navigation Service Provider (ANSP) to provide Air Navigation Services (ANS) as defined in the accompanying Service Provision Conditions (SPC) and in accordance with DASR.

Air Navigation Services (ANS) *

Those services provided to air traffic during all phases of operations (approach, aerodrome and enroute). ANS comprises Air Traffic Management (ATM), Communication Navigation Surveillance (CNS) systems services, Meteorological Services for air navigation (MET), Aeronautical Information Services (AIS), Aeronautical Data services (DAT), Flight Procedure Design Services (FPD) and ATM network functions.

Air Navigation Services Provider (ANSP) *

A generic term for an organisation certified by a National Aviation Authority (NAA) and / or a Military Aviation Authority (MAA) to provide an Air Navigation Service.

Air Operator Certificate (AOC) *

A certificate granted by a National Aviation Authority permitting the conduct of commercial flying activities.

Air Traffic Advisory (ATA) *

An ATS subcategory provided within advisory airspace to help ensure separation, in so far as is reasonably practicable (SFARP), between aircraft through the provision of advisory information that may be used by pilots to avoid collision with other aircraft.

Air Traffic Control (ATC) *

A service provided for the purpose of:

preventing collisions between aircraft

on the manoeuvring area, preventing collisions between aircraft and obstructions

expediting and maintaining an orderly flow of air traffic.

Air Traffic Control Service * 

A service provided for the purpose of:

preventing collisions between

aircraft

aircraft and obstructions on the manoeuvring area

expediting and maintaining an orderly flow of air traffic.

The Air Traffic Control Service comprises any one or combination of: an area control service, an approach control service and an aerodrome control service.
 

Air Traffic Management (ATM) *

A generic term encompassing the dynamic, integrated management of air traffic and airspace in a safe, economical and efficient manner through the provision of facilities and seamless services in collaboration with all parties involving airborne and ground-based functions. The three subsets of ATM are Air Traffic Services (ATS), Airspace Management (ASM) and Air Traffic Flow Management (ATFM), although only ATS is regulated under DASR.

Air Traffic Management Network Functions*

Provision of the information communications technology network that connects the range of ATM systems.

Air Traffic Management Plan (ATMP) *

A plan that outlines the systems and processes that will be used to ensure the safe operation of Uncrewed Aircraft Systems (UAS) in conjunction with other air traffic.

Air Traffic Services (ATS) *

A term which collectively encompasses the Air Traffic Control Services (area control service, approach control service and aerodrome control service), an air traffic advisory service, an alerting service, a flight information service and battlefield airspace control.

Air Vehicle Operator (AVO) *

A qualification awarded to a trained and competent individual who controls a Certified, Specific or Open Category UAS during flight time.

Aircraft *

Any machine or craft, including an uncrewed machine or an uncrewed craft, that can derive support in the atmosphere from the reaction of air, other than reactions of the air against the earth's surface (Civil Aviation Act 1988, section 3).

Aircraft Altitude *

The vertical distance above mean sea level as indicated by an externally sourced altimeter set to either QNH (atmospheric pressure adjusted to sea level) or standard pressure of 1013.2 millibars, as appropriate to the procedures being used.

Aircraft Captain *

A pilot designated as being in command and charged with the safe and effective conduct of the aircraft during flight. Analogous with the civil term 'pilot–in–command'.

Aircraft Controller *

A generic term used by aviation medicine describing those specialist personnel who may issue control or advisory information to aircraft that the pilot may base flight decisions upon.

Aircraft Flight Manual (AFM)

A manual, associated with Military Type Certificate, containing limitations within which aircraft is to be considered airworthy, and instructions and information necessary to the flight crew for the safe operation of the aircraft.

Aircraft Maintenance Programme

A document which describes or incorporates by reference the specific scheduled maintenance tasks and their frequency of completion, the associated maintenance procedures and related maintenance standards and practices necessary to preserve the airworthiness of those aircraft to which it applies.

Aircraft Oxygen System *

A means to store and supply aviators’ breathing oxygen.

Aircraft Propulsion System *

The aircraft propulsion system includes, but is not limited to, the engine and propeller, including sub-systems, accessories and controls.

Aircraft Stores *

Any devices, excluding air cargo, intended for internal or external carriage and mounted on aircraft suspension and release equipment, whether or not the items are intended to be separated in flight from the aircraft. Aircraft Stores include missiles, rockets, bombs, mines, torpedoes, gun ammunition, grenades, pyrotechnic devices, sonobuoys, signal underwater sound devices, fuel and spray tanks, dispensers, pods (refuelling, thrust augmentation, gun, electronic countermeasures, etc), targets, chaff and flares from countermeasures dispensing systems, and suspension equipment (racks and pylons).

Aircraft Stores Compatibility

The ability of an aircraft, stores, stores management systems, and related suspension equipment to coexist without unacceptable effects of one of the aerodynamic, structural, electrical, or functional characteristics of the others under all flight and ground conditions expected to be experienced by the aircraft-store combination. A particular store may be compatible with an aircraft in a specific configuration, although not necessarily so with all pylons (or stations) under all conditions.
 

Aircraft Structure *

Aircraft components that are required to carry loads in order to perform their intended functions. The structure of an aircraft includes the fuselage, wing, empennage, landing gear, helicopter rotor and drive systems, control systems and surfaces, engine mounts, radome, nacelles, inlets, store mounts, structural operating mechanisms and other components that perform a structural function.

Aircrew *

A generic term describing personnel whose primary duties are conducted within the confines of an aircraft during flight time. Aircrew are deemed passengers unless authorised as crew or as a mission essential passenger for the specific aviation mission.

Aircrew Instructor *

A generic term describing a crew member who is qualified and authorised to deliver instruction in the airborne simulated or airborne environment.

Airdrop

Delivery of personnel or cargo from Aircraft in Flight.

Airland

The delivery of personnel, materiel or forces from an Aircraft after it has landed.

Airside *

The movement area and other facilities or zones on the aerodrome vital to the safe operation of aircraft and the personnel working with those aircraft.

Airside Breach *

Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person beyond the designated airside protected area.

Airspace *

The zone next to the earth consisting of atmosphere capable of sustaining flight.

Airspace Management *

The design, allocation, integration, and regulation of airspace, including the application of airspace usage procedures to ensure the airspace is appropriate for the mission or activity.

Airworthiness

The ability of an aircraft, or other airborne equipment or system, to operate in flight and on ground without significant hazard to aircrew, ground-crew, passengers (where relevant) or to other third parties.

Airworthiness Board (AwB) *

An independent board of review appointed by the Defence AA to advise and make recommendations on airworthiness certification and to review the in-service management of Aviation Systems.

Airworthiness Codes

Product airworthiness requirements, applicable to the design of a product, that are approved by a competent airworthiness authority for the use with standardised aircraft categories Examples include, but not limited to EASA Certification Specifications (CS), FAA Federal Aviation Regulations (FAR) and Standardisation Agreements (STANAG) and Defence Standards (DEF STAN).

Airworthiness Directive (AD)

A document issued or adopted by the Authority which mandates actions to be performed on an aircraft to restore an acceptable level of safety, when evidence shows that the safety level of this aircraft may otherwise be compromised.

Airworthiness Limitation (AwL) *

An item arising from the certification process that has been shown to have failure mode(s) associated with an unsafe condition. The terms Airworthiness Limitation Item or Airworthiness Limitation Instruction are also used in certain sections of the implementing regulations.

Airworthiness Standards *

Detailed and comprehensive design and safety criteria applicable to the category of aeronautical product (aircraft, engine or propeller).

Alerting Service *

An ATS subcategory provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organisations as required.

Alternative Means Of Compliance (AltMoC) *

An alternative to an Acceptable Means of Compliance or a means of complying with a requirement for which no AMC exists. The entity proposing the AltMoC must demonstrate to DASA that it satisfies the regulation.

Application Identifier (AI) *

The A or N prefix of the Australian military aircraft registration number. For example, A41 for C–17 Globemaster III, N48 for MH–60R Seahawk.

Approved Organisation

That which has been assessed by the Authority and deemed to meet their applicable regulations or requirements.

Area Navigation (RNAV) 

Method of navigation that permits aircraft operation on any desired flight path within the
coverage of ground-based or spaced-based navigation aids or within the limits of the capability of self-contained aids, or a combination of these.

Note: Area navigation includes PBN as well as other operations that do not meet the definition of PBN.

Area Safe Height (ASH)*

The lowest altitude which will provide safe terrain clearance within a defined area.

Artefact

An airworthiness related document, either hardcopy or electronic, that can be used as evidence in making an airworthiness judgement.

Authorised Maintenance Data (AMD) *

Those instructions, approved for use by the responsible Authority, required to retain aircraft and aircraft-related equipment in an airworthy condition. These instructions include, but are not limited to, maintenance manuals, technical maintenance plans, servicing schedules, component lifing policies and inspection programs.

Authority To Operate (AUTHOP) *

Authorisation to operate a non-Defence registered aircraft.

Autonomous Aircraft *

An uncrewed aircraft that does not require pilot intervention in the management of flight.

Autonomous Operation *

An operation during which an uncrewed aircraft is operating without pilot intervention in the management of flight.

Aviation Fatigue Management (AVFM) *

The management of fatigue in a manner appropriate to the level of risk exposure and the nature of the task or operation, in order to minimise the adverse effects of fatigue on safety during those activities.

Aviation Medical Certificate *

A document provided by an AVMO attesting to the medical fitness of a person to conduct flying related duties.

Aviation Medical Officer (AVMO) *

A medical practitioner who is recognised by Surgeon General–ADF as being appropriately trained and authorised to provide aviation medicine support to Defence Aviation.

Aviation Medicine (AVMED) *

The component of military medicine that is concerned with the interaction between the aerospace environment and human physiology, psychology and pathology.

Aviation Physiology Training Officer (APTO) *

A person who is recognised by a Single Service Aviation Medical Advisor (SSAMA) as being appropriately trained and authorised to provide supplemental aviation medicine training support.

Aviation Safety *

A state in which risks to personnel arising from aircraft operations are eliminated or otherwise minimised so far as is reasonably practicable through a continuing process of hazard identification and safety risk management.

Aviation Safety Acquisition Management Plan (ASAMP) *

A document that describes the safety strategy to introduce an aircraft type into Defence service. May include the safety strategy to achieve airworthiness, manage flight operations, and achieve broader capability/logistics milestones

Aviation Safety Event *

Any event where an aviation system (including the human element) fails to perform in the expected manner and, adversely affects, or could adversely affect, the safety or airworthiness of an aviation system or third party.

Aviation Safety Issue *

A characteristic of an organisation or a system that can reasonably be regarded as having the potential to adversely affect the safe operation of an aircraft, aviation-related equipment or products and services.

Aviation Safety Management (ASM) *

A function integral to safe flying operations and requires processes and procedures to ensure competence of commanders and all personnel associated with flying operations, adherence to authorised orders and instructions, promotion of and maintenance of high levels of aviation safety awareness, and systematic evaluation and management of risk in operations.

Aviation Safety Management System (ASMS) *

A systematic approach to managing aviation safety, including the necessary organisational structures, accountabilities, policies and procedures. Reference to SMS in DASR means ASMS unless expressly stated to the contrary.

Aviation System *

The integration of equipment, personnel, organisation, publications and procedures to achieve an aviation role. Aviation systems include: Defence registered aircraft types, non-Defence registered aircraft types, Uncrewed Aircraft Systems (UAS).

Base Maintenance

Maintenance tasks falling outside the criteria for Line Maintenance.

Basic Aircrew Qualification *

The qualification aircrew are awarded upon becoming Type Rated.

Basic Flight Trainer (BFT) *

A device, which does not meet the requirements for categorisation as a Flight Simulator / Flight Simulator Training Device, approved for the purpose of permitting experience acquired therein to be credited towards meeting a sub‑set of requirements for aircrew qualification, categorisation or currency.

Basic Regulation

The DASR Basic Regulation was withdrawn on 01 September 2022. Its purpose was to establish a framework for the definition and implementation of common safety requirements and administrative procedures in the field of military aviation.

Battlefield Airspace Control (BAC) *

An Air Traffic Service (ATS) subcategory provided in assigned airspace that supports the air, land or amphibious scheme of manoeuvre by providing airspace management, coordination and de–confliction of joint fires and effects in that airspace in order to facilitate safe and efficient access to airspace through a combination of coordination with adjoining civil/military agencies and through the application of both procedural and positive control methods.

Cabin Altitude *

The pressure altitude inside the pressure hull of the aircraft and as indicated on a ‘cabin altimeter’.

Category Assessor *

An experienced aircrew member who is qualified and authorised for the purpose of operational training and assessment of other aircrew within the same Basic Aircrew Qualification.

Certificate Of Airworthiness (CoA) *

A certificate issued to aircraft which conform to a type certificate that has been issued in accordance with DASR.21 (or if appropriate and if national regulations allow, based upon a Civil Type Certificate issued by a recognised Civil Authority.

Certificate Of Release To Service (CRS)

This is a statement, signed by an appropriately authorised person, on behalf of an approved organisation, which asserts that maintenance has been properly carried-out.

Certification

Recognition that a product, part or appliance, organisation or person complies with the applicable airworthiness requirements followed by the declaration of compliance.

Certification Maintenance Requirements (CMR) *

Scheduled maintenance that is required by the design to help show compliance with the appropriate type certification basis by detecting the presence of a safety-significant latent failure that would result in a hazardous or catastrophic failure condition.

Certification Privileges *

The authority to issue a Certificate of Release to Service (CRS). Where on-aircraft maintenance has occurred, the CRS must be issued by the holder of a relevant MAML. Component certifying staff must be authorised by the maintenance organisation on the basis of appropriate competence, training and experience in accordance with a procedure(s) contained in the MOE. Individuals issuing a CRS for components are not required to hold a MAML.

Certified Aerodrome *

An aerodrome in respect of which an aerodrome certificate is in force.

Certified Life Limit For Components *

Specified life limit after which the components should be retired.

Certifying Staff

Personnel responsible for the release of an aircraft or a component after production and/or maintenance.

Charter *

The commercial renting of a complete aircraft, crew and maintenance system for tasking undertaken within the bounds of a legally binding contract.

Check Captain *

An experienced Aircraft Captain who is qualified and authorised for the purpose of assessing operational flying skills of other pilots.

Chief Executive Officer (CEO)

Person who is responsible for a civil company within which the Approved Organisation operates. The CEO may report to a board of directors and may appoint other managers, or they may be one of very few people in a small company. In relation to EMAR/DASR, the CEO is mentioned as they may be senior to the Accountable Manager.

Civil Aviation Authority (CAA)*

The governmental entity or entities, however titled, that are directly responsible for the regulation of all aspects of civil air transport, technical (i.e. air navigation and aviation safety) and economic (i.e. the commercial aspects of air transport). Source: ICAO Doc 9734 Safety Oversight Manual Part A.

Civil Register *

The CASA-maintained Australian civil aircraft register. Aircraft on this register are referred to as civil registered aircraft and will be appropriately marked with a ‘VH’ registration (e.g. VH-ABC). This may be extended to include similar registers maintained by other NAA.

Civil Registered Aircraft *

An aircraft that is registered by a National Airworthiness Authority.

Cockpit Voice Recorder (CVR) *

A device that uses a combination of microphones and other audio and digital inputs to collect and record the aural environment of the cockpit and communications to, from and between the flight crew members.

Command And Control (C2) Link (UAS Context) *

The data link between a remotely piloted aircraft and a remote pilot station for the purposes of managing flight.

Command Clearance *

An approval to deviate from an aviation system’s approved configuration, role, environment, limitation or condition, when mission requirements cannot be achieved otherwise.

Communications, Navigation and Surveillance Systems (CNS Services)*

Services to ensure the availability, continuity and effective performance of Communications, Navigation and Surveillance systems which are used, or intended to be used, in the delivery of an ANS.

Competency *

The capacity of an individual to effectively and safely complete a task consistently, to a required standard of performance, through the application of appropriate skills, knowledge and attitude.

Compliance Demonstration

Activities to demonstrate that the product, part or appliance complies with the requirements in the Certification Basis.

Component Maintenance Manual (CMM)

A formal document which details the way in which off-aircraft maintenance instructions on the specified component shall be accomplished.

Concern (Independent Board Of Review) *

A review finding which identifies a critical aviation safety issue that requires immediate action, and if not resolved by a specified date, will highly likely result in the limitation or withdrawal of aviation safety Instruments.

Configuration *

The functional and physical characteristics of existing or planned hardware, firmware, software or a combination thereof, as set forth in technical documentation (which includes specifications, standards and drawings) and ultimately achieved in a product.

Configuration Control

A systematic process that ensures that changes to released configuration documentation are properly identified, documented, evaluated for impact, approved by an appropriate level of authority, incorporated, and verified.

Configuration Item (CI)

Any component, module, sub-component, equipment, technical manuals, software, ground support equipment, which can be submitted to the configuration control process.

Configuration Management

A management process for establishing and maintaining consistency of a product’s performance, functional, and physical attributes with its requirements, design and operational information throughout its life.

Configuration Role and Environment (CRE)*

The configuration (physical and functional attributes of the aircraft ), role (how the aircraft is flown and employed) and environment (the physical and functional conditions in which the aircraft is operated); as specified in an aviation system’s Statement of Operating Intent and Usage (SOIU).

Consequence *

The outcome of an event or situation expressed qualitatively or quantitatively, being a loss, injury, disadvantage or gain.

Contemporary Crash Protection Design Requirement (CCPDR) *

Design requirements prescribed by a National Aviation Authority (NAA) and /or a Military Aviation Authority (MAA), which form the basis to certify the aircraft Type.

Continued (Design) Airworthiness

All tasks to be carried-out to verify that the conditions under which a type- certificate or a supplemental type-certificate has been granted continue to be fulfilled at any time during its period of validity.

Continuing Airworthiness

All of the processes ensuring that, at any time in its operating life, the aircraft complies with the airworthiness requirements in force and is in a condition for safe operation.

Continuing Airworthiness Management Organisation (CAMO) *

Organisation approved by the Authority that ensures on behalf of the Military Air Operator (MAO ), that each aircraft they manage is of the approved configuration available to meet the intended purpose and safe to fly.

Continuing Airworthiness Manager (CAM) *

Person designated by the MAO Accountable Manager to be responsible for the management and supervision of MAO continuing airworthiness activities.

Co–Pilot *

A pilot qualified and authorised to manipulate the flight controls of an aircraft during flight under the command of an Aircraft Captain.

Corrective Maintenance *

Those maintenance tasks necessary to restore items to a specified condition or to restore them to serviceability after failure.

Crash Protection (CP) *

Requirements designed to protect occupants and improve the chances of survival, during the initial impact phase as well as subsequent evacuation and post evacuation phases of a survivable crash.

Crew *

Competent and authorised individuals, including personnel authorised to undertake aircraft type qualification training, who may operate or interface with an aircraft's systems during flight specific aviation mission, including temporary equipment installations. Crew is broken into subsets of flight crew and mission crew.

Crew Station *

A position, seated or otherwise, within an aircraft from which a crew member may perform an operational function.

Critical Design Configuration Control Limitations (CDCCL) *

These identify the critical design features such as proper wire separation, proper installation of a panel gasket, maximum acceptable bonding jumper resistance levels, etc., that must be maintained in exactly the same manner throughout the life of the aircraft in order to comply with the type certificate and maintain airworthiness. The purpose of CDCCL is to provide instructions to ensure these critical features are present throughout the life of the aircraft and are inspected and verified when alterations, repairs, or maintenance actions occur in the area.

Critical Infrastructure * (UAS Context)

A facility that, if damaged by an Uncrewed Aircraft (UA), may have an immediate and adverse effect on Mission Essential Personnel (MEP) or General Public (GP) health and safety.

Critical Parts *

Critical parts are identified by the design approval holder in accordance with the applicable Type Certification Basis requirements. Critical parts include, but are not limited to, those parts required to be identified by the following airworthiness code clauses: FAR / CS 27.602, FAR / CS 29.602, FAR 33.70 (termed engine life-limited parts), CS-E 515, FAR 35.16, CS-P 150 and CS-APU 210.

Critical Phase Of Flight *

A phase of flight determined by aircraft specific orders, instructions and publications (OIP) whereby only essential duties for the safe operation of the aircraft are permitted.

Currency *

A prescribed period during which a qualification or skill is valid without further assessment.

Dangerous Goods *

Articles or substances which are capable of posing a risk to health, safety, property or the environment and which are shown in the list of dangerous goods in authoritative technical instructions or which are classified according to those instructions. Dangerous goods include explosives, flammable liquids, gases, corrosives and chemically reactive or acutely (highly) toxic substances. Authoritative technical instructions include ICAO – Technical Instructions for the Safe Transport of Dangerous Goods by Air and IATA –- Dangerous Goods Regulations (DGR) Manual.

Data Integrity 

Assurance that Aeronautical Data and its value has not been lost or altered since the data origination or authorised amendment.

Data Services* 

The provision of aeronautical databases either directly to aircraft operators for loading into air or ground-based mission systems, or to Aeronautical Information Services providers. This Aeronautical Data does not include data not specifically relevant to air navigation such as aircraft weight and balance data.

Data Service Provider 

A Data Service Provider receives, assembles, translates, selects, formats, distributes or integrates Aeronautical Data and information that is released as an authoritative source for use in aeronautical databases on aircraft or in operational aviation systems, applications and equipment.

Declaration Of Compliance

A statement, signed by the Head of Design Organisation or by an authorised representative, to show compliance with all applicable type-certification basis and, where applicable, environmental protection requirements. It declares that the product is airworthy within the specific design limitations.

Decompression Illness (DCI) *

A term referring to a group of clinical conditions that may result from exposure to a change in ambient pressure.

Defect *

A fault, other than by fair wear and tear, which renders an item unsuitable for its intended use. The fault may be in design or deviation of a dimension, finish or other functional characteristic from specified requirements or from recognised standards of engineering practice.

Defence *

Civilian and Service elements of the Defence portfolio.

Defence Aircraft *

Aircraft operated by or on behalf of Defence (see also Military Aircraft).

Defence Area (DA) *

An area intended to protect public safety by giving notice of a practice, prohibiting entry to, and allowing the removal of unauthorised people, vehicles, vessels or aircraft from a DA when an authorised Defence operation or practice is in progress. DA’s may also be referred to as Defence training areas and ranges.

Defence Aviation *

The design, construction, maintenance and operation of any aircraft owned, leased, hired or chartered by Defence; any aircraft operated exclusively for or on behalf of Defence; any aircraft for which CASA has placed statutory airworthiness responsibilities on Defence.

Defence Aviation Authority (Defence AA) *

Appointment by the Secretary of Defence and the Chief of the Defence Force (SEC/CDF) to the Chief of Air Force (CAF) assigning accountability for the regulation and oversight of all aspects of Defence aviation.

Defence Aviation Authority Directive (DAAD) *

Directive issued by the Defence AA to promulgate immediate and binding requirements to authorise or restrict a course of action in relation to an Aviation System.

Defence Controlled Land * (UAS Context)

Land where Defence controls access by the General Public (GP), such that Defence can ensure, for example: UAS operations can be conducted which are not in the proximity of, or overhead, the GP.

Defence Employee *

A person employed in the Department of Defence under section 22 of the Public Service Act 1999.

Defence Long Range Operations (DLRO) *

Involves fixed-wing multi-engine turbine aircraft, operated by Defence, which may carry Defence personnel on long-range flights, as determined by the MAO .

Defence Member *

A person as defined in section 3 of the Defence Force Discipline Act 1982, means (1) a member of the Permanent Navy, the Regular Army or the Permanent Air Force; or (2) a member of the Reserves who is rendering continuous full-time service or is on duty or in uniform.

Defence Organisation *

The Australian Defence Force and the Department of Defence.

Defence Personnel *

In the context of DASR applicability, Defence Personnel means all Defence Employees, Defence Members, ADF Cadets and ADF Cadet Staff and foreign equivalents while serving with Defence.

Defence Register *

The Defence aircraft register maintained by DASA.

Defence Registered Aircraft *

An aircraft listed on the Defence Register.

Delegate Of The Safety Authority (DoSA) *

An individual, external to the Defence Aviation Safety Authority, who has been formally assigned an Authority responsibility and is considered an agent of the Authority when exercising that delegation. The individual may be external to Defence.

Design Change

A change in type design (described in DASR 21.A.91 - Classification of change in type design).

Detect And Avoid *

The capability to see, sense or detect conflicting traffic or other hazards and take the appropriate action.

Developmental Test And Evaluation (DT&E) *

An engineering function used by the manufacturer, or a nominated test agency, to establish that a system complies with the design requirements.

Display Flying*

A subset of an Air Display whereby the flying activity is designed to demonstrate handling and operational capabilities, in the approved envelope for the Aircraft Type, using a display sequence flown by specifically qualified Crew.

DLRO (Defence Long Range Operations) Area Of Operations *

The area of operations, over land or water, where an aircraft’s diversion time is outside of the nominated threshold time.

DLRO Benign Environment *

For the purpose of DLRO, a benign operating environment is one where military aircraft operations are largely ‘civil Regular Public Transport (RPT) like’. Therefore, flight profiles will typically involve take-off, climb to altitude, cruise / loiter at altitude and a decent / hold at the nominated destination. In addition, a benign operating environment is associated with numerous DLRO aerodromes / alternates, high reliability and availability of Communication, Navigation and Surveillance (CNS) and Air Traffic Management (ATM) services.

DLRO Challenging Environment *

For the purpose of DLRO, a challenging operating environment is one where military aircraft operations are potentially conducted in a contested environment and within complex airspace. Therefore, flight profiles will typically involve low level nap of earth flight, manoeuvring and defensive action. In addition, a challenging environment is associated with limited aerodromes / alternates and potentially reduced CNS and ATM services / facilities.

DLRO Maximum Diversion Time *

The maximum time an aircraft can fly from an adequate aerodrome, based on endurance afforded by the aircraft’s most time limited system at the One Engine Inoperable (OEI) speed, in International Standard Atmosphere (ISA) still air conditions.

DLRO Significant Event *

For the purposes of DLRO, a significant event is where there is any system malfunction, degradation or other in-flight event, which requires the flight crew to make a decision to turn back, divert or continue at an increased level of alertness.

DLRO Significant System *

A propulsion system or any other aircraft system whose failure could adversely impact the safety of a DLRO flight, or whose function is required for continued safe flight and landing.

DLRO Threshold Time *

A ‘threshold time’ is the maximum flight time to an adequate aerodrome (at OEI, ISA still air conditions) before a DLRO approval is required.

Dry Lease *

A Defence aircraft lease for an aircraft that does not include, maintenance or insurance requirements.

Dual Flight *

Flight conducted in an aircraft or accredited Flight Simulation Training Device while receiving training from a flying instructor.

Emergency Locator Transmitter (ELT) *

Equipment which broadcasts distinctive signals on designated frequencies and depending on application, may be automatically activated or be manually activated.

Engineering Authority (EA) *

The authority assigned expressly to an organisation or to an individual within an organisation to undertake specific engineering activities.

Explosive

A substance manufactured with a view to producing an explosion or pyrotechnic effect.

Exposition*

The document or documents that contain the material specifying the scope of work deemed to constitute sufficient evidence to justify organisational approval and showing how the organisation complies with a DASR.

Extension

Inclusion of additional topics to Category A, B1 and B2 Military Aircraft Maintenance Licences (MAML) as detailed in DASR 66 Appendix I (which includes Modules 55–55) that are not part of the applicable modules for that category of MAML.

External Lift*

The external carriage of air cargo by rotary wing aircraft.

External Service Providers *

Contractors, consultants and professional service providers engaged by Defence.

Fatigue *

A physiological state of reduced mental or physical performance capability resulting from sleep loss or extended wakefulness, circadian phase, or workload (mental or physical activity) that can impair a member’s alertness and ability to safely operate an asset or perform safety-related duties.

First Pilot *

The Aircraft Captain or a type rated pilot authorised as crew who is occupying a seat with access to flight controls and actually in control of the aircraft.

Fit For Flight

Condition of a type design being certified as compliant with applicable airworthiness requirements as well as of an aircraft having been serviced and inspected as meeting the certified design and prepared for the intended flight.

Flight * 

In the case of a heavier-than-air Aircraft, the operation of the Aircraft from the moment at which the Aircraft first moves under its own power for the purpose of taking-off, until the moment at which it comes to rest after being airborne. (Note: DASA does not intend for the definition of Flight to affect the way in which environmental commanders define ‘Flight Time’. Environmental commanders may define 'Flight Time', or delegate the definition of 'Flight Time' to FEG Commanders).

In the case of a lighter-than-air Aircraft, the operation of the Aircraft from the moment when it becomes detached from the surface of the earth, or from a fixed object on the surface of the earth, until the moment when it becomes again attached to the surface of the earth or a fixed object on the surface of the earth.

Flight Authorisation *

The process through which qualified and competent Crew are approved to conduct a particular Mission, including the application of limitations or controls.

Flight Crew *

Crew, including personnel authorised to undertake aircraft type qualification training, who are charged with duties essential to the safe operation of an aircraft, including remotely piloted aircraft. Flight crew is a subset of crew.

Flight Data Recorder (FDR) *

A device that use a combination of data providers to collect and record parameters that reflect the state and performance of an aircraft.

Flight Information Documents (FID) *

A suite of documents that includes Flight Information Publications (FLIP) aeronautical maps, aeronautical charts and similar documents that support aviation activities.

Flight Information Publication (FLIP) *

An enduring term that describes various aeronautical information designed for use primarily in the cockpit environment.

Flight Information Service (FIS) *

An Air Traffic Services (ATS) subcategory provided for the purpose of giving advice and information useful for the safe and efficient conduct of flight.

Flight Planning * 

The Aircraft Captain’s planning for the safe conduct of the Flight, based on considerations of:

Aircraft performance

Mission considerations

expected conditions on the route to be followed, or in the area of operations and at the relevant aerodromes 

navigation sources and facilities associated with the intended route and relevant aerodromes 

the effects of normal, emergency and operating limitations on the above.

Flight Procedure Design Services (FPD Services)*

The design, documentation and validation of flight procedures including the ongoing review and maintenance of flight procedures.

Flight Recorder *

Any type of receiver installed in the aircraft for the purpose of complementing accident/incident investigation or flight analysis, this includes a Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR).

Flight Related Operations *

Flight Related Operations refer to those operations which, while not strictly meeting the definition of ‘Flight’, warrant consideration of the application of Flight Authorisation and related aviation Hazard controls. Such operations may include: high-speed aborts, engine running on-loads and off-loads, rotors-turning ground events on helicopters, engine ground runs (excluding ground runs conducted by maintenance personnel as a part of routine maintenance activities) and taxiing.

Flight Simulation Training Device (FSTD) *

A device that simulates an aircraft or part of an aircraft used to train personnel who interact with aircraft flight controls or power plant controls to manoeuvre the aircraft in flight and/or on the ground, and needs approved standards for the purpose of permitting experience acquired therein to be credited towards meeting requirements for operator qualification, categorisation or currency.

Flight Simulator (FS) *

See Flight Simulation Training Device (FSTD).

Flight Test *

A type of flying activity conducted in support of broader Defence Test and Evaluation (T&E) requirements that has any of the following characteristics:

flight of a not yet certified design (aircraft, propulsion systems, parts or appliances);

flights to demonstrate compliance to certification basis or conformity to type design;

flights intended to experiment new design concepts, requiring unconventional manoeuvres or profiles for which it could be possible to exit the already approved envelope of the aircraft;

flight to evaluate a change in role or operating environment; or

training flights in support of the above activities.

Flight Test Pilot *

A pilot qualified and authorised to carry out research, development, test or evaluation of Flight Test activities.

Flight Test System Specialist *

A person qualified and authorised to carry out research, development, test or evaluation of Flight Test activities.

Flight Training Device (FTD) *

A Synthetic Training Device (STD) that simulates the aircraft in ground and flight operations to the extent of the systems installed in the device and comprises a full size replica of the instruments, equipment, panels and controls in an open flight deck area, or an enclosed flight deck of the aircraft, but does not, in every respect, simulate the aircraft in ground and flight operations. An FTD includes the necessary software and equipment, and the way that the equipment is interconnected.

Flying Display *

A planned display of sequence(s) by one or more aircraft for an assembled group of people that may include demonstrations of handling and operational capabilities within the approved envelope for the type.

Flying Instructor *

A pilot who is qualified and authorised to deliver pilot type qualification training in the airborne or simulated airborne environment.

Flying Management System (FMS) *

A system of processes and procedures within a flying organisation centred on Aircraft types which establishes the management practices, operational rules, and operator training and qualification requirements that support safe Flight Operations.

Flying Supervision * 

The function of oversight and management of Crew in aviation operations, considering both safety and Mission, to ensure the safety of Defence aviation through adherence to Flying Management System controls. Flying Supervision is more than Flight Authorisation and monitoring of any single Flight. Supervision is a holistic task that requires:

overseeing training, qualification and development of Crew

the assignment of a suitable Crew to a task or Mission

supervising the Mission planning and Flight Planning, Mission execution and post-Mission reporting and recording

Flight Authorisation, where the Flying Supervisor is a qualified and authorised Flight Authorisation Officer.

Flypast *

A subset of an Air Display whereby a Flight of one or more Aircraft is tasked to pass over a specific location on a constant track and at a constant height at a specified time.

Foreign Military Aircraft *

A military aircraft of any foreign nation, certified for flight under that nation's Military Aviation Authority.

Foreign Object Debris (FOD) *

A substance, debris or article alien to a vehicle or system that has potential to cause damage to aircraft. Examples of FOD are aircraft parts, rocks, broken pavement, ramp equipment, and vehicle parts.

Foreign Register *

A civil aircraft register or military aircraft register maintained by any country other than Australia.

General (Standard) Cargo

Cargo without special, hazardous or dangerous properties and therefore does not require extra precautions or special handling for air transport.

General Public (GP) * (UAS Context)

All persons not classed as Mission Essential Personnel (MEP), including all persons not directly associated with the operation of the UAS or briefed as part of the UAS mission.

NOTE: GP may, depending on the UAS mission, include civilians, Defence personnel, and/or foreign military personnel.

Ground Support Equipment (GSE) *

The ancillary maintenance equipment necessary to maintain an aircraft during servicing.

Guidance Material (GM) *

This is typically developed to provide additional explanation to assist the application of the requirement and/or explain the Acceptable Means of Compliance (AMC).

Hazard *

A source of potential harm or a situation with a potential to cause loss.

Hazard Log *

A data base of identified hazards. It is a formal record of all data and tasks associated with identifying and resolving hazards.

Hazard Tracking Authority (HTA) *

An appointment or appointments – made by the appropriate Force Element Group (FEG) commanders or Navy and Army equivalents - responsible for tracking actions and recommendations from FEG aviation safety reports to completion.

Height Above Obstacles Within (HAOW) *

The vertical distance between an aircraft and the highest obstacle on the terrain or water surface within a specified lateral radius from the aircraft’s position. For example, ‘500ft HAOW 600m’ means 500 feet of vertical separation between the aircraft and the highest obstacle within 600 metres of that aircraft.

Helicopter

A heavier-than-air aircraft supported in flight chiefly by the reactions of the air on one or more normally power-driven rotors on substantially vertical axes.

Helicopter Landing Site (HLS) *

A defined area that may be used by helicopters for the purposes of landing or taking off, including infrequent, opportunity and short term basis for all types of operations. It may or may not be located on an Aerodrome. It may also be referred to as a helipad.

Helipad *

See Helicopter Landing Site.

Heliport *

An Aerodrome or a defined area on a structure intended to be used wholly or in part for the arrival, departure and surface movement of helicopters.

Human Factors

Principles which apply to design, certification, production, training, operations and maintenance and which seek safe interface between the human and other system components by proper consideration of human performance.

Human Performance

Human capabilities and limitations which have an impact on the safety and efficiency of operations.

Hypoxia *

A lack of oxygen to the tissues sufficient to cause impairment of function.

Implement

To introduce requirements into regulations (DASR) by either adoption or compliance.

Implementing Regulation

Regulation that amplifies the operation of Basic Regulation, within the defined constraints as provided within the Basic Regulation.

Includes (Rules Of Interpretation) *

'Includes’ means: ‘includes but is not limited to'.

Independent *

In the context of, or similar to, ‘independent board’ or ‘independent inspection’ and within these Regulations means independent of the chain of command which is being assessed or inspected.

Inshore *

Flight over water below LSALT within 20 nm of land, including reefs and rocks, or fixed obstacles, which include manufactured obstacles such as oil rigs that are continually above the high water mark.

Inspection *

The process of determining compliance with engineering standards and applicable maintenance documents.

Instructions For Continuing Airworthiness (ICA)

Instructions for Continuing Airworthiness (ICA) detail the methods, inspections, processes, and procedures necessary to keep aircraft and/or products airworthy.

Instrument Rating *

An award that indicates a pilot has attained a high level of specialist instrument flying skills required for the safe and effective operation of the specified aircraft type in IMC.

Instrument Rating Examiner (IRE) *

A pilot who is qualified and authorised to conduct Instrument Rating Tests.

Key Staff *

Appointments within a DASA approved organisation that contribute to the safe operation of an aviation system.

Life Limited Parts

Parts that, as a condition of their type-certificate, may not exceed a specified operating time, calendar time, number of operating cycles, or any other approved service life consumption units.

Limitations *

Lack of capacity; inability to achieve required outputs; restrictive weakness; physical or environmental constraint; an action imposed by an authority, eg an AwB or Defence AA constraint, which must be undertaken, ie you MUST DO something.

Limited Certification Authorisation

This is issued by the AMO, in accordance with a procedure approved by the MAA , for flight crew, flight engineer or crew chief to carry out specific tasks (usually away from their home base or station). The authorisation permits the holder to issue certificates of release to service following specific tasks within the limits of the tasks specifically endorsed on the authorisation.

Line Maintenance

Carried out before flight to ensure that the aircraft is fit for the intended flight.

Long Term Lease *

The dry or wet leasing, renting or hiring of an aircraft by Defence, usually for more than a year, to support ongoing Defence activity.

Lost Link * (UAS Context)

The loss of command and control link contact with a remotely-piloted aircraft during its operation.

Low Flying *

As defined in Flight Information Handbook Australia (FIHA) and consistent with the relevant OpSpec.

Low Flying Area (LFA) *

A surveyed area that is approved for use and unlimited aircraft manoeuvring within the LFA boundaries to an authorised height.

Low Flying Route (LFR) *

A surveyed route that is approved for use and assures obstacle and terrain clearance will exist within the LFR boundaries to an authorised height.

Lowest Safe Altitude (LSALT)

The lowest altitude which will provide safe terrain clearance at a given place.

Maintenance

Any one or combination of overhaul, repair, inspection, replacement, modification or defect/fault rectification of an aircraft or component, with the exception of pre-flight inspection.

Maintenance Check Flight *

Flying activity conducted after aircraft maintenance when required by Instructions for Continuing Airworthiness (ICA). However, ICA may use different terminology. Note, there may be other check flights conducted in service that are not required by ICA; these flights are not a regulatory requirement. Maintenance check flight is not to be confused with flight test which is covered under DASR 21. (Refer to glossary entry for `Unit Maintenance Test Pilot’.)

Maintenance Manual

That part of the Military Air System document set which identifies the particular maintenance procedures and periodicity necessary to maintain the airworthiness of the Military Air System.

Master Minimum Equipment List (MMEL)

A list established for a particular aircraft type by the organisation responsible for the Type Design with approval of DASA. The MMEL identifies items which individually may be unserviceable at the commencement of flight. The MMEL may be associated with special operating conditions, limitations or procedures.

May * (Rules Of Interpretation)

‘May’ is used in the permissive sense to state authority or permission to do the act prescribed, and the words ‘no person may’ or ‘a person may not’ mean that no person is required, authorised or permitted to do the act described.

Means Of Compliance

The techniques that will be used to demonstrate the compliance of the type design against each certification requirement identified in the Certification Basis. Examples include test, analysis and inspection.

Mechanic *

Mechanics carry out maintenance tasks to standards specified in the maintenance data and should notify supervisors of defects or mistakes requiring rectification to re-establish required maintenance standards.

Meteorology (MET) *

A service that provides area and terminal weather information services that safely support aviation activities, such as flight planning and enroute diversion decisions based upon changing weather conditions.

Meteorological Services

A service that provides weather information services to support the safety, regularity and efficiency of aviation activities.

Military Air Operator (MAO ) *

The regulated organisation approved by the Defence Aviation Authority to perform military air operations as defined in the issued Military Air Operator Certificate (MAOC) and in accordance with DASR. In Defence, a MAO is usually a Force Element Group (FEG) or equivalent.

Military Air Operator Certificate (MAOC) *

Certificate (DASR Form 138) issued by the Defence AA to authorise the Military Air Operator (MAO ), usually a Force Element Group (FEG) or equivalent, to perform military air operations as defined in the accompanying Operations Specification (OpSpec) and in accordance with DASR.

Military Aircraft *

An Aircraft, (including Uncrewed Aircraft System (UAS)), designed and/or operated for military use and/or registered or intended to be registered on the military register of a Military Airworthiness Authority (MAA).

Military Aircraft Maintenance Licence (MAML)

A categorised licence which, dependent upon completion of all relevant approved training and examinations, and the requisite levels of practical experience, permits an authorised individual to issue certificates of release to service (CRS) or act as support staff for scheduled and / or unscheduled maintenance performed on an aircraft or aircraft systems as defined by DASR 66.

Military Airworthiness Authority (MAA) *

See Military Aviation Authority

Military Aviation Authority*

A person or organisation responsible for the safety oversight of military aviation. An MAA acts independently from the operational, acquisition and sustainment chains of command and is assigned responsibility through a formal instrument such as legislation or an order, directive or decree.

Military Certification Review Item (MCRI) *

A document recording Deviations, Special Conditions, new Means of Compliance or any other certification issue which requires clarification and interpretation, or represents a major technical or administrative issue.

Military Permit To Fly (MPTF) *

Permit issued by the Authority or organisations granted such privilege by the Authority when an aircraft does not meet, or has not been shown to meet, applicable airworthiness requirements but is capable of safe flight under defined conditions and for specified purposes. A Military Permit to Fly (MPTF) is also issued for Flight Test activities.

Military Restricted Type Certificate (MRTC) *

Certificate issued by the Authority for a product that does not comply with the applicable Type Certification Basis with restrictions imposed in regard to the intended use of the product.

Military Supplemental Type Certificate (MSTC ) *

Certificate issued by the Authority that certifies a MAJOR change to a product's type design.

Military Type Certificate (MTC ) *

Certificate issued by DASA stating that a product complies with the applicable airworthiness requirements.

Military Type Certificate (MTC ) Holder

The organisation responsible for the relevant Type Design accepting the rights and obligations for the product.

Minimum Equipment List (MEL)

A document that allows for the operation of a specific aircraft under specific conditions with particular item(s) of equipment inoperative at the time of dispatch for the intended flight. Despite the inoperative equipment, the aircraft still complies the Master Minimum Equipment List. (CASA CAAP 37-1(5) - Minimum Equipment Lists).

Minimum Sector Altitude (MSA)

The lowest altitude which may be used which will provide a minimum clearance of 1,000FT above all objects located in an area contained within a circle or a sector of a circle of 25NM or 10NM radius centred on a significant point, the ARP or the HRP.

Minimum Separation Distance* (MSD) 

The authorised minimum separation, in all directions, between any part of an Aircraft in Flight and the ground, water or Obstacle. MSD applies when flying at less than 2,000 feet above the surface, and does not apply during take-off or landing or to the separation between Aircraft in the same formation.

Minor Amendment

Those changes to the organisation's Exposition(s) which do not affect the DASR related approvals.

Mission * 

The assignment of one or more Aircraft to complete a specific task, which may involve multiple Flights.

Minor Maintenance

Includes repetitive tasks and simple defect/fault rectification.

Mission Crew *

Crew who may or may not be qualified on aircraft type, but their qualifications are essential for the successful outcome of a specific aviation mission. Mission crew is a subset of crew.

Mission Essential *

Personnel, equipment or cargo required to successfully conduct a specific aviation mission.

Mission Essential Passenger *

A passenger whose carriage aboard an aircraft is directly associated with the specific mission being conducted. A mission essential passenger may include a boarding party, medical patient, paratroops, troops, deploying personnel or survivors from a Search and Rescue task.

Mission Essential Personnel (MEP) * (UAS Context)

All persons directly associated with the operation of the UAS or briefed as part of the UAS mission.

NOTE: MEP includes all persons directly associated with the operation of the UAS or briefed as part of the UAS mission. MEP is a broader class than personnel directly associated with the launch, recovery and control during flight of the UAS. MEP may, depending on the UAS mission, include civilians, Defence personnel, and/or foreign military personnel. MEP must be aware of the UAS operations, the associated hazards and be essential to the conduct of the UAS task. MEP may include ground troops within a Defence joint operation/exercise area, troops on a Defence ship or civilian personnel operating as part of a counter terrorism tasking.

Mission Instructor *

A non-pilot crew member who is qualified and authorised to deliver instruction in the airborne environment or simulated airborne environment.

Model *

An aircraft or system model is a derivative of an aircraft or system type that follows a unique lineage. For example, an A-47 Poseidon is an aircraft type, whilst P-8A is the aircraft model.

Modification

A modification is a change of design to the authorised configuration of the approved type design of product, part or appliance.

Typical examples are component changes, equipment additions, or software changes and often involve a revision to the drawings and support documentation.

Multi-Crew *

The crewing of an aircraft by more than one crew member.

Must (Rules Of Interpretation) *

'Must' is used in the imperative sense. Use of other commonly used imperatives, such as 'shall', 'is to', or 'will' should not occur.

National Airworthiness Authority (NAA) *

See Civil Aviation Authority

National Military Airworthiness Authority (NMAA ) *

See Military Aviation Authority (MAA).

Negative Training *

Techniques learned or practiced in the Flight Simulation Training Device (FSTD) which do not translate to correct actions during a safety-critical activity in the airborne environment as a result of incorrect training, fidelity or fit out of the FSTD.

Night Vision Device (NVD)

Any electro-optical device that is used to detect visible and infrared energy and provide a visible image.

Night Vision Goggles (NVG)

An electro-optical image intensifying device that detects visible and near-infrared energy, intensifies the energy, and provides a visible image for night viewing. 

NOTES: 

Night vision goggles can be either hand-held or helmet-mounted. 

Plural form (Night Vision Goggles) refers to binocular equipment and the singular form (Night Vision Goggle) refers to monocular equipment.

Night Vision Imaging System (NVIS)*

A system in which all of the elements required to operate an Aircraft successfully and safely using NVDs are integrated, including NVDs, NVIS compatible lighting, Aircraft components and equipment, training and currency, operating procedures and Continuing Airworthiness.

Non Compliance *

The failure of a plan or procedure to comply with requirements.

Non Conformance *

The failure of a product, process or system to meet its regulatory, specification, drawing, or quality requirements.

Non-Certified Aerodrome *

An aerodrome in respect of which an aerodrome certificate has not been issued.

Non-Defence Registered Aircraft *

An aircraft operated by or on behalf of Defence that is not recorded on the Defence Register.

Non-Standard Cargo*

Non-Standard Cargo is cargo that requires special handling, additional precautions or specific procedures developed for either its preparation, composition, configuration, loading, placement, restraint or unloading. Non-standard cargo includes Dangerous Goods, security- protected consignments, service weapons, safe hand, human remains, unaccompanied personal effects, live animals, mail, perishables, and unserviceable or crashed Aircraft. Non-Standard Cargo also includes the following, where special handling, additional precautions or specific procedures are required:

cargo that is not contained in a unit load device or pallet certified for the aircraft cargo loading system

cargo requiring attachment directly to the aircraft floor.
 

Non-Technical Skills (NTS) *

Those human performance skills that promote reliable and effective task performance in complex work systems. NTS encompass attributes such as the ability to recognise and manage human performance limitations, make sound decisions, communicate effectively, lead and work as a team and maintain situation awareness.

Note: (Independent Board Of Review) *

A review finding which identifies a significant aviation safety issue that is being addressed through management action.

Observation (Independent Board Of Review) *

A review finding which is worthy of comment, but does not require additional management action.

Obstacle *

Is all fixed (whether temporary or permanent) and mobile objects, or parts thereof, that are located on an area intended for the surface movement of aircraft; or extend above a defined surface intended to protect aircraft in flight; or stand outside those defined surfaces and that have been assessed as being a hazard to air navigation.

Occurrence Reporting *

The reporting of any failure, malfunction, defect, act, omission or other occurrence which has resulted in or may result in an unsafe condition. The objective of occurrence reporting is to use the reported information to contribute to accident prevention and the improvement of aviation safety. Further detailed information regarding occurrence reporting including reportable incidents, timeframes and occurrence reporting types is contained in AMC GR.40 - Occurrence Reporting.

Offshore *

Flight over water other than ‘inshore’.

Operation (of the Aircraft) *

The process and action of operating aircraft (following the initial and continual acceptance of the design, construction and maintenance processes, acts and actions) by the operational chain of command in relation to the Flight of such Aircraft in the operational environment.

Operational Effectiveness *

The ability of a system to perform its intended function over its intended operational spectrum, in the expected operational environment, and in the face of expected threats when operated by typical operational Defence personnel.

Operational Servicings (B/F, T/A, A/F) *

Operational Servicings are any maintenance conducted before or after flight as defined in the Aircraft Maintenance Program (AMP ). The AMP may include pre-flight inspection tasks outlined in DASR AMC M.A.301(a)(1).

Operational Suitability *

The capacity of the system, when operated and maintained by typical operational Defence personnel in expected numbers, at the expected level of competency, to be reliable, maintainable, available, logistically supportable, compatible, interoperable, safe and is ergonomically satisfactory.

Operations Specification (OpSpec) *

An integral component of the Military Air Operator Certificate (MAOC), Air Cargo Delivery Service Provider Certificate (ACDSPC) and Air Battle Management Operator Certificate (ABMOC), but prepared on a separate form (DASR Form 139) and details key positions of the MAO, ACDSP and ABMO, aircraft types or operations authorised, and operating provisions. Roles and tasks, specific approvals and any limitations/conditions (where necessary) for each approved aircraft type or operation are detailed in separate annexes.

Opposition Manoeuvre *

A manoeuvre where flight vectors of aircraft are opposing each other in close proximity.

Orders, Instructions And Publications (OIP) *

A suite of advisory, informative, procedural, directing and mandating documents that support the operations of an aviation system. OIP may include: aircrew manuals specific to type; general aircrew publications; Defence Instructions; Standing Instructions; command and unit issued Flying Orders, Special Flying Instructions and standard operating procedures.

Original Equipment Manufacturer (OEM) *

A manufacturer listed as the approved source of manufacture for components in the Type Certificate data sheet. The OEM owns and controls the source drawings, i.e. the design of the component.

Passenger *

Any person who is on board an aircraft other than a member of the authorised crew.

Perform Maintenance / Task Sign-Off *

Task sign-off attests that a competent and authorised person has performed the maintenance task prior to certification.

Performance Based Navigation (PBN)

Area navigation based on performance requirements for aircraft operating along an Air Traffic Services (ATS) route, on an instrument approach procedure or in a designated airspace.

Note: Performance requirements are expressed in navigation specifications (ie RNAV specification, RNP specification) in terms of accuracy, integrity, continuity, availability and functionality needed for the proposed operation in the context of a particular airspace concept.

Periodic Health Examination (PHE) *

A more comprehensive assessment that periodically replaces the Specialist Employment Stream Annual Health Assessment (SESAHA) in accordance with Defence policy. Also considered an aviation medical certificate assessment when conducted by an AVMO.

Pilot *

A person qualified and authorised to manipulate the flight controls of an aircraft during flight.

Populous Area * (UAS Operations Context)

An area in relation to the operation of a UA that has a sufficient density of population for some aspect of the operation, or some event that might happen during the operation (in particular, a fault in, or failure of, the UA) to pose an unreasonable risk to the life or safety of somebody who is in the area, but is not connected with the operation.

Portable Electronic Equipment (PEE) *

Comprises all electrically powered equipment that is carried on Defence aircraft by crew and passengers, not forming part of the certified aircraft type, Role Equipment, ALSE or cargo.

Pre-Flight Inspection *

The pre-flight inspection is a continuing airworthiness task intended to encompass all of the actions necessary to ensure that the aircraft is fit to make the intended flight. The pre-flight inspection is not maintenance and can be carried out by appropriately trained maintenance, aircrew or other personnel in accordance with published guidance from the operating organisation.

Preventive Maintenance *

Those actions that reduce the probability of a known failure mode in items with predictable wear-out characteristics by retaining materiel and restoring it to a specified condition.

Primary Runway *

The runway used most frequently or that provides the best overall aerodrome capability.

Privilege *

The means by which the holder of a qualification, rating, endorsement or approval is authorised to conduct an activity.

Production *

The manufacture and assembly of new parts, appliances, aircraft, engines or propellers to approved design data.

Products, Parts And Appliances

Product = the design of an aircraft, engine or propeller (each can be granted with a Type-certificate).

Parts and appliances = lower level components for which an AUSMTSO (or foreign TSO) may exist, and fitted to a product.

Qualification * (Flight Simulation Training Device Context)

The verification and validation of the functionality and fidelity of a Flight Simulation Training Device (FSTD) against an accepted standard. The end result of a process which formally examines and documents compliance of a FSTD, against predefined standards, to the satisfaction of the relevant qualification organisation approved by the Authority.

Qualified Entity *

A body (Commonwealth or commercial) which may be allocated a specific certification task by, and under the control and responsibility of, the Authority.

Quality Management System (QMS) *

All activities of the overall management function that determine the quality policy, objectives and responsibilities and implement them by means such as quality planning, quality controls, quality assurance and quality improvement.

RAAF Institute Of Aviation Medicine (IAM) *

The ADF Centre of Excellence for aviation medicine related issues.

Ramp Inspection *

Related to the operation of Civil Registered Aircraft chartered for temporary use by Defence. The Ramp Inspection is an acknowledged means of providing confidence in a charter aircraft’s fitness for purpose and assessing the suitability of a charter supplier.

Recency *

A prescribed period of on-going practical application of a function, set within a prescribed currency period that ensures a qualification or skill remains proficient throughout the currency period.

Reduced Vertical Separation Minima (RVSM)

Reduced vertical separation minimum of 300 m (1000 ft) between FL 290 and FL 410 inclusive.

Registration

Registration is the formal recording by the MAA of an individual aircraft on the military aircraft register and the assignment of a tail number.

Regression Testing*

A test process re-running functional and non-functional tests to ensure that previously developed and tested software still performs as expected after a change. Regression Testing also includes testing software not amended during the latest upgrade to ensure the software change has not affected interface control data.

Remote Pilot (RP) * (UAS Context)

The person in direct command/ control of the UAS, including manipulating flight controls or programming waypoints during flight.

Remote Pilot Station (RPS) * (UAS Context)

A station at which the RP manages the flight of a UA.

Remotely Piloted Aircraft (RPA) * (UAS Context)

An uncrewed aircraft that is operated by a remote pilot or air vehicle operator.

Remotely Piloted Aircraft (RPA) Observer * (UAS Context)

A trained and competent person designated by the operator who, by visual observation of the remotely piloted aircraft, assists the remote pilot in the safe conduct of the flight.

Remotely Piloted Aircraft System (RPAS) * (UAS Context)

A subset of Uncrewed Aircraft Systems (UAS), a RPAS is a system consisting of the remotely piloted aircraft (RPA), together with any Remote Pilot Station (RPS), communications/data links, maintenance, launch and recovery systems. This includes the network and operating personnel required to control the RPAS. A RPAS may also be referred to as a UAS.

Repair

A 'repair' means the elimination of damage and/or restoration to an airworthy condition following initial release into service by the manufacturer of any product, part or appliance.

Required Navigation Performance (RNP)

A statement of the navigation performance necessary for operation within a defined airspace.

Note: Navigation performance and requirements are defined for a particular RNP type or application.

Rest Period *

A continuous uninterrupted and defined period of time, following duty or prior to duty, during which a person is free of all duties, standby and reserve.

Restricted Instrument Rating *

An award that indicates a pilot has attained a level of specialist instrument flying skills required for the safe and effective operation of the specified aircraft type in IMC, but has not met the full criteria to be awarded an Instrument Rating.

Restricted Type-Certificate Data Sheet (RTCDS)

Companion document to Military Restricted Type-Certificate (MRTC) and describes the basis of certification, lists any associated Military Certification Review Items (MCRIs), details technical characteristics and operating limitations, and includes details of each aircraft added to the RTCDS.

Restrictions *

Prohibitions on activities that an authority might impose (i.e. you MUST NOT DO something). Such imposed conditions are designed to treat limitations.

Risk Management (RM) *

The application of Risk Management in the context of Defence aviation operations. RM offers a systematic, logical approach to identifying and treating risks to Defence aviation resources and missions, while supporting initiative, flexibility and adaptability

Risk Mitigation *

The strategy and methods employed to eliminate or minimise risks presented by a hazard.

Role Equipment *

Any equipment, apart from ALSE, fitted to an aircraft on a non-permanent basis, or carried on board, for operation by crew or passengers in flight to support a Defence role or mission.

Runway Incursion *

Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take-off of aircraft.

Safety Critical

Applied to a condition, event, operation, process, or item whose proper recognition, control, performance, or tolerance is essential for safe system operation or use; eg safety critical function, safety critical path, safety critical component.

Safety Critical Area *

A working environment assessed as having a heightened risk to the physical safety of personnel, or where key operational decisions are made. For example an aircraft flight deck or an ATC Control Tower.

Safety Management System (SMS) *

See Aviation Safety Management System (ASMS).

Segregated Airspace (SA) * (UAS Context)

Airspace of specified dimensions allocated for exclusive use to a specific user(s).

Segregation *

Airspace Control Measures (ACM) that ensure that two or more aircraft do not come into such close proximity that a threat to the safety of those aircraft exists.

Senior Air Traffic Control Officer (SATCO) *

An internationally recognised civil/military term describing the person commanding and/or managing the ATC unit responsible for the ATS delivery at a specific aerodrome and the airspace relevant to the aerodrome. At Defence aerodromes, the SATCO may also hold an administrative command title appropriate to the ATS unit concerned.

Senior Instrument Rating Examiner (SIRE) *

A pilot who is qualified and authorised to conduct Instrument Rating Examiner assessments.

Sensor Operator *

A person charged to operate airborne sensor systems on a crewed aircraft or UAS to collect, analyse and distribute airborne sensor data.

Separation Assurance *

The assurance provided by the Air Traffic Control (ATC) service provider that if the pilot complies with ATC control instructions an aircraft will maintain a prescribed minimum separation standard from another aircraft or object.

Serious Injury Or Illness *

An injury or illness requiring the person to have:

immediate treatment as an in-patient in a hospital, or

immediate treatment for:

1.  the amputation of any part of their body

2.  a serious head injury

3.  a serious eye injury

4.  a serious burn

5.  the separation of their skin from underlying tissue (such as degloving or scalping)

6.  a spinal injury

7.  the loss of a bodily function

8.  a serious laceration.

medical treatment within 48 hours of exposure to a substance. (WHS Act 2011)

Service Life-Limit For Components *

Specified life-limit after which the components should undergo maintenance to restore their serviceability.

Service Provision Conditions (SPC)*

An integral component of the Air Navigation Service Provider Certificate (ANSPC) that details:

key positions

the types of service the ANSP Air Navigation Service Provider (ANSP) is certified to provide

operating provisions.

The complexity of the service(s) may be further detailed in separate annexes. For example, ATM services may have a separate annex for each Defence site where services are provided.
 

Shall (Rules Of Interpretation)

'Shall' is used in the mandatory requirement, as is 'must'.

Shipborne Heliport *

A defined area on a ship (including any installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of helicopters.

Short Term Lease *

The dry or wet leasing, renting or hiring of an aircraft by Defence, usually for less than one year, to support specialised Defence activity.

Should * (Rules Of Interpretation)

‘Should’ is used to imply an act or process identified for inclusion in a desired outcome is complied with unless sound reasoning may determine otherwise.

Side Number *

A unique RAN number that differs from the ‘tail number’ and is applicable to RAN aircraft only. The side number is normally the identifier used in call signs and for flight planning purposes. The side number is not normally included in the Defence Register.

Simulator Instructor *

A crew member who is qualified and authorised to deliver instruction in a simulated airborne environment.

Single Pilot *

The crewing of an aircraft by one pilot, even though other pilot positions may be available and occupied by non-pilot crew members.

Single Service Aviation Medical Advisor (SSAMA) *

An Aviation Medical Officer (AVMO) who represents a single Service, is recognised by the Surgeon General–ADF as being qualified to provide authoritative aviation medical advice and is responsible for the implementation of aviation medicine policies.

Solo Flight *

Flight in which the pilot is the sole occupant of the aircraft.

Sparsely Populated Area *

An area considered outside the areas of cities, towns or settlements characterised by rangeland grazing, desert, uncultivated landscapes, wilderness, infrequent homesteads, large land holdings, extensive uncleared land, salt lakes, adjacent coastal waters and open ocean or navigable tracts of water with infrequent water traffic.

Special Conditions

Are introduced when the design features of a particular product or the experience in operation render any of the airworthiness code provisions inadequate or inappropriate to ensure conformity with essential requirements.

Specialised Services *

Services that include, but are not limited to, structural repair, composite repair, surface finishing, metal machining, metal spraying, shot peening, welding, electroplating and anodising, non-destructive testing, borescope inspections, in-flight entertainment systems.

Specialised Services Staff *

Staff who carry out specialised maintenance tasks to the standard specified in the maintenance data or defined standards acceptable to the MAA .

Specialist Employment Stream Health Assessment (SESHA) *

A generic term that may be used to describe an aviation medical certificate assessment.

Sponsor *

The entity/organisation responsible for defining the required aviation outcome, receives or uses the outcome and is responsible for funding the related activities, processes, project or products required to safely achieve the outcome.

Standard *

A description of a material, product, doctrine or process meant for repeated applications by many users. A Technical Standard is an established norm or requirement. It is usually a formal document that establishes uniform engineering or technical criteria, methods, processes and practices.

Standard Part

A Standard part is a part designated as such by the design approval holder responsible for the product, part or appliance, in which it is intended to be used and manufactured in complete compliance with an established specification which includes design, manufacturing, test and acceptance criteria, and uniform identification requirements. Examples of standard parts are aircraft general spares as defined by the design approval holder, such as nuts, bolts, washers, split pins, etc. All design, manufacturing, inspection data and marking requirements necessary to demonstrate conformity of the part will be in the public domain and published or established as part of recognised specifications.

Standard Scenario * (UAS Context)

A description of a UAS operation in the Specific category, for which risk controls have been determined based on a risk assessment, and introduced by the Authority.

State Aircraft * (Australian Context)

Aircraft of any part of the Defence Force (including any aircraft that is commanded by a member of that Force in the course of duties as such a member); and aircraft used in the military, customs or police services of a foreign country: Civil Aviation Act 1988, section 3; Air Navigation Act 1920, section 3.

Statement Of Operating Intent And Usage (SOIU) *

A document describing the approved roles, operating envelope, usage spectrum and operating environment for a particular aircraft type. The SOIU differentiates between tasks for which the type has been certified and tasks that are planned but will require certification action before flight can be authorised.

Stores Suspension Equipment *

All aircraft devices such as racks, adaptors, missile launchers, internal guns, countermeasure dispensers and pylons, used for carriage, employment and jettison of aircraft stores. Aircraft guns and countermeasure dispensers for flares and chaff must be considered to be stores suspension equipment.

Sub-Atmospheric DCI *

The term used to describe cases of decompression illness (DCI) induced by exposure to pressures less than sea level equivalent, such as encountered during flight. DCI is a potentially lethal condition and should be treated as a medical emergency. The term is referred to simply as DCI in DASR.

Supervisor *

Personnel who ensure that all required maintenance tasks are carried out and, where not completed or where it is evident that a particular maintenance task cannot be carried out to the approved maintenance data, then such problems should be reported to the DASR 145.A.30(c) person for appropriate action.

Supplemental Oxygen *

Refers to acceptable aviators’ breathing oxygen that is available for use whenever required.

Support Staff

Those personnel holding a DASR 66 Military Aircraft Maintenance Licence in Category B1 and/or B2 with the appropriate privileges, certification authorisations and Military Aircraft Type Ratings, working in a base maintenance environment while not necessarily holding certification privileges.

Support Staff support the Category C licence holder and are required to ensure that all relevant maintenance tasks have been carried out to the required standard.

Surveyed Route Or Area *

A route or area is considered surveyed when it is flown in VMC by day and all hazards and obstacle data that may compromise Aviation Safety have has been identified and recorded.

Survivable Crash Or Accident *

An accident where the cockpit and/or structure remained relatively intact and the forces experienced by the occupants did not exceed, or should not have exceeded, the survivable limits of human G-tolerance.

Symmetry Check

A symmetry check is equivalent to a mensuration check or alignment check which is typically covered in the applicable Aircraft Maintenance Programme (AMP ).

Synthetic Training Device (STD) *

Means:

a flight simulator

a flight training device

a basic instrument flight trainer

an air traffic control simulator; or

an air traffic control part-task trainer.

System Safety *

The application of engineering management principles, criteria and techniques to optimise the safety of a ‘system’, within the constraints of operational effectiveness, time and cost throughout all phases of the life cycle.

System Safety Engineering *

An engineering discipline requiring specialised professional knowledge and skills in applying scientific and engineering principles, criteria, and techniques to identify and eliminate hazards, in order to reduce the associated risk.

System Tolerance *

The inherent ability of the Aviation System to compensate for inadequate/absent defences.

Tail Number *

The tail number is the unique numerical identifier, which is appended to the Application Identifier (AI), and identifies each individual aircraft. For example, A41–nnn for C–17 Globemaster, N48–nnn for MH–60R Seahawk.

Task Authorisation *

The legal authority allowing a person to perform a specified maintenance task, recognising that the person has completed the prerequisite training relevant to the task and has demonstrated competency in performance of the task. Task authorisations are recorded in the persons Navy ‘A’ card, AATTR or RAAFRTE or equivalent document.

Task 'Sign-Off' *

This is a statement, signed by an appropriately authorised and competent person or an appropriately authorised and competent MAML holder, that, the maintenance task has been completed, to the standard required, in accordance with the AMD.

Temporarily Medically Unfit For Flying (TMUFF) *

Where an aircrew member, remote pilot or aircraft controller is temporarily medically unfit to perform specialist flying related duties, but may perform non-flying related duties.

Test And Evaluation (T&E) *

T&E is a process to obtain information to support the objective assessment of a Capability System with known confidence, and to confirm whether or not a risk is contained within acceptable boundaries across all facets of a system’s life cycle. The individual terms are defined as: a test is an activity in which a scientific method is used to obtain quantitative or qualitative data relating to the safety, performance, functionality, contractual compliance, and supportability of a system; and evaluation is analysis of test results to determine (verify) or prove (validate) something.

The Authority *

The Authority collectively refers to the Defence Aviation Authority (Defence AA), and specific appointments within the Defence Aviation Safety Authority (DASA) who have been given a delegation from the Defence AA to exercise authority on their behalf.

Time Limited System*

An aircraft system which when operated / activated, has a useful or safe operating time that is less than the maximum endurance of the aircraft. An example is a cargo bay fire suppression system.

Time Zone *

A time zone is one of the areas into which the world is divided according to what time it is there.

Two Pilot *

The crewing of an aircraft by two pilots in aircraft fitted with dual flying controls

Training Product

A qualification, skill, knowledge, competency, course or module that influences a basic training course (IAW DASR 66 syllabus), or aircraft type/task training course (IAW DASR 66).

Type *

A specific design (make and model) of a product certified under a single Type Certificate.

Type Certificate Data Sheet (TCDS) *

Companion document to a Military Type Certificate (MTC ) and describes the basis of certification, lists any associated Military Certification Review Items (MCRIs), details technical characteristics and operating limitations, and includes details of each aircraft added to the TCDS.

Type Certification *

The process through which compliance of the design with the Type Certification Basis is established within the bounds of the intended operating roles and environment contained in the Statement of Operating Intent and Usage (SOIU).

Type Certification Basis

An agreed set of airworthiness requirements (including code, special condition, etc) that a product must be compliant with in order to obtain a Military Type Certificate.

Type Design

The set of approved design information necessary to define the product type, as detailed in DASR 21.A.31 - Type design.

Type Rated *

Crew that are qualified to operate a particular aircraft type, or ground crew that are qualified to maintain a particular aircraft type.

Type Specific *

A qualification or endorsement is type specific if the qualification or endorsement applies only to an aircraft type that is specified on the qualification or endorsement.

UAS Flight Termination System * (UAS Context)

A control system that can immediately terminate flight of an uncrewed aircraft (UA) safely.

UAS Operating Permit (UASOP) * (UAS Context)

Approval to operate a UAS that is not Certified. Issued by the Authority, based on a risk assessment and the implementation of related risk controls.

UAS Operator * (UAS Context)

The organisation, eg MAO ; or person with Operational Control (OPCON) or tasking authorisation for the UAS.

Unapproved Aeronautical Product *

Any part, component or material that has not been manufactured and certified as conforming to the technical data against which type certification is provided.

Underwater Locating Device (ULD) *

A device to allow the flight recorder to be located underwater post-crash.

Uncrewed Aircraft (UA) * (UAS Context)

An air vehicle that flies under RP control or autonomous programming without a human on board in control.

Uncrewed Aircraft System (UAS) * (UAS Context)

The entire system consisting of the uncrewed aircraft (UA), Remote Pilot Station (RPS), communications/data links, networks, launch and recovery systems, and personnel required to fly/control the UA.

Unit Maintenance Test Pilot (UMTP) *

A pilot authorised to fly an aircraft after aircraft maintenance has been conducted as required by Instructions for Continuing Airworthiness (ICA) to check aircraft serviceability. (Refer to glossary entry for `Maintenance Check Flight'.)

Unpopulated Area *

A geographic area which contains no people, including no Defence personnel and no civilian persons.

Validate *

Confirmation, through the provision of objective evidence, that the requirements for a specific intended use (ie outcome) or application have been fulfilled.

Variant *

A variant of an aircraft or system is derived from a ‘model’. For example; the C–130J is a model of the A-97 Hercules type, and the C–130J–30 is a variant of the C–130J model.

Verify *

Confirmation, through the provision of objective evidence, that specified requirements have been fulfilled.

Warbird, Historic And Replica Aircraft (WHRA) *

A non–Defence registered aircraft that is an ex-armed forces (Warbird) aircraft, a historic aircraft or a replica aircraft.

Weapon

Any device, whether tangible or intangible, designed or intended to be used in warfare to cause:

injury to, or death of, persons; or

damage to, or destruction of, objects.

Weight And Centre Of Gravity Schedule

Weight and centre of gravity schedule - This is an EMAR term and is equivalent to a weight and balance statement.

Wet Lease *

A lease where an organisation provides Defence with an aircraft, crew, maintenance and insurance for Defence tasking.