11.1.1.1 To support safe aircraft operations at Defence aerodromes, the Defence Aviation Safety Authority (DASA) released the Defence Aviation Safety Regulations 139 – Aerodromes (DASR 139). These regulations require all Defence aerodromes to be classified as ‘certified’ or ‘non-certified’. Where DASR 139 refers to the term ‘aerodrome’, it should be read to include:
airport
airfield
airbase
heliport (land based or shipborne).
11.1.1.2 DASR 139 deals with, inter alia, two key approvals:
Aerodrome Operator (AD OPR) Organisation approvals
Defence Certified Aerodrome approvals.
Classification of aerodromes (Certified/Non-Certified)
11.1.1.3 Defence aerodromes may be certified or non-certified. DASA’s decision11 to classify an aerodrome as a Certified Aerodrome is based on meeting one of the following four criteria22:
there is a terminal instrument flight procedure33 (not including Airborne Radar Approach (ARA) per se) for the aerodrome44
there are regular civil commercial passenger operations at the aerodrome
there are frequent aircraft operations at the aerodrome55
Defence flight operations at the aerodrome are often inherently hazardous, beyond the scope of normal civilian operations—and the provision of a well-designed/maintained aerodrome is a key safety risk control66.
11.1.1.4 DASA developed these criteria through benchmarking certification criteria and information from the Civil Aviation Safety Authority, the European Union Aviation Safety Agency and the International Civil Aviation Organisation tailored to the context of Defence aviation operations at Defence aerodromes.
Guidance for Non-Certified Defence Aerodromes
11.1.1.5 Non-certified Defence aerodromes are not subject to DASR 139 requirements. However, a commander’s obligations under the WHS Act 2011 still apply. The underlying principles in DASR 139 (and the Defence Aviation Safety Design Requirements Manual (DASDRM) Section 6 standards) provide guidance to the responsible commander77 for operation of a non-certified aerodrome—in ensuring that the aerodrome equipment, systems and installations support safe aviation operations. There could also be more than one responsible commander88 at any one time99, depending on the operation of the aerodrome.
11.1.1.6 If the design or operating intent change throughout the life of a non-certified aerodrome, certification and assurance may be warranted under DASR 139. Those responsible for operating/managing the aerodrome should contact DASA for guidance if such changes (eg major design changes) occur.
Certified Aerodromes
11.1.1.7 The AD OPR organisation must submit an application to DASA for an Aerodrome Certificate for those aerodromes requiring certification. The Aerodrome Certification process is in Chapter 5.3 Annex V.
11.1.1.8 On determining that the aerodrome and the aerodrome operations meet all DASR 139 requirements, DASA will issue an amendment to the AD OPR Certificate (AD OPRC) Operations Specification (OpSpec) — authorising the approved AD OPR to operate the aerodrome as a DASR 139 Certified Aerodrome. Chapter 5.3 Annex B details the process for updating the OpSpec.
Aerodrome Operator organisational structure
11.1.1.9 An AD OPR is an organisation consisting of operational, maintenance and engineering personnel that:
forms part of a Force Element Group or equivalent force structure
must achieve the roles and responsibilities of DASR 139. (See Chapter 5.3 Annex B for the AD OPR approval process).
11.1.1.10 Due to the complexities of the organisations, facilities and locations associated with individual aerodromes, clear understanding and documentation of an organisational structure will enhance command’s ability to achieve safe flight operations. The Services outsource to other Defence Groups, such as Security and Estate Group, Chief Information Officer Group and Capability Acquisition and Sustainment Group, to deliver aerodrome capability. Contractors are utilised extensively to complete tasks. This occurs at the AD OPR and base level.
1.1.1.11 DASR AMC 139.30.2.g requires the AD OPR to include an ‘outline of relevant aerodrome management arrangements’ in the AD OPR Compliance Statement. This outline should include aerodrome management arrangements with subordinates, subordinate organisations (eg wings/units), supporting Defence groups, contractors and other organisations that support DASR 139 compliance. The AD OPR should include details of formal agreements which such organisations or individuals in the Compliance Statement.
11.1.1.12 At the base level, DASR AMC 139.50.2 requires the Aerodrome Manual to include the aerodrome’s organisation and management structure, including agreements with civil operators. The description of organisation and management arrangements should include relationships with organisations that support the AD OPR’s local team to achieve and maintain DASR 139 compliance. This should include any subcontractors from supporting organisations and details of formal agreements.
Personnel competency
11.1.1.13 As the safe operation and maintenance of an aerodrome requires a large number of personnel working in a range of fields and disciplines, ensuring their competence is essential. To ensure AD OPR personnel meet the requirements of DASR AMC 139.100 (to obtain, complete and maintain effective competency), AD OPRs should define the training, qualifications and authorisations required for personnel undertaking a role in support of aerodrome operation. These may include training and assessment programs pertaining to airside awareness, aerodrome rescue and firefighting, operations, engineering and maintenance.
Aerodrome documentation
11.1.1.14 DASA requires evidence demonstrating suitable systems for the maintenance and operation of each aerodrome are in place. These artefacts are part of the Aerodrome Manual requirements. There are a number of systems, including the Quality Management System and Safety Management System, which the AD OPR may implement across the organisation or have aerodromes establish individually. Regardless, when applying to add a Certified Aerodrome to an AD OPRC OpSpec, the AD OPR must include details of the implemented organisational systems in the Aerodrome Manual.
11.1.1.15 DASA reviews these documents on receipt of an application for addition of a DASR 139 Certified Aerodrome to an AD OPRC OpSpec. These documents form part of the evidence supporting compliance with the regulation.
Aerodrome maintenance program
11.1.1.16 Failure to follow the aerodrome maintenance program may lead to DASA making a finding against the AD OPR approval, and can affect certification. Examples of arrangements (systems and procedures) used to enact the aerodrome maintenance program plan include:
repainting of markings – periodic repaint
electrical system works – continuity testing
periodic friction testing
obstacle surveys
aerodrome technical inspections
aerodrome serviceability inspections.
11.1.1.17 There is no requirement to submit an aerodrome maintenance program to DASA. However, the program should be available for DASA on request and may be reviewed as part of initial approval and oversight activities.
Certification process and programs
11.2.1.1 The Aerodrome Certificate is a certificate granted to an Aerodrome Operator (AD OPR) by DASA certifying that the aerodrome meets the technical specifications outlined in its certification basis. The Aerodrome Certificate addresses the requirements of DASR 139.80.
11.2.1.2 To achieve aerodrome certification, the following five primary activities must be undertaken:
define a DASA-agreed CB for the aerodrome
demonstrate that the aerodrome design and construction complies with the agreed CB
declare that the aerodrome design and construction complies with the agreed CB
implement arrangements to support continued aerodrome compliance with the CB
provide design information to support continuing safe operation of the aerodrome.
11.2.1.3 Each of these mandated activities (and other supporting aspects) form the basis of the certification process.
11.2.1.4 The following figure shows the aerodrome certification activities:
Figure 1: Aerodrome certification activities diagram
11.2.1.5 The certification program of work captures the operating intent; establishes the design requirements; designs, constructs and demonstrates compliance to the design requirements; establishes arrangements for continued compliance to the certification basis; and establishes arrangements for continuing safe operations at the aerodrome. The plan documenting this program of work is the Certification Program Plan (CPP), which will help align and coordinate all stakeholders involved in the aerodromes certification activity.
Develop a Certification Program
11.2.1.6 Obtaining an Aerodrome Certificate requires the completion of the Certification Program (CP) conforming to DASR 139 requirements. A CPP is not mandated by the regulations, but a project should consider developing a CPP. A CPP will aid the process by gaining agreement with DASA, of the proposed approach to achieve certification. The plan then informs and aligns all stakeholders in an effort to increase efficiency in a complex process. Acquisition projects and complex changes should produce a detailed CP while a simplified CP may be acceptable for less complex changes.
11.2.1.7 DASA will review and endorse a CPP if found suitable to support the future application for a certificate. DASA will be available to support the applicant throughout the certification process and provide guidance and feedback where needed. This will reduce the likelihood of an application being incomplete at the time of submission.
11.2.1.8 The applicant should submit a mature draft of the document to the DASA aerodromes mailbox for comments and feedback. The Aerodrome and Heliport section in DASA and the applicant will discuss the content of the CPP until both parties are satisfied that the certification activities are appropriate and sufficiently detailed for the stage of the project. An applicant organisation may submit a signed CPP to DASA for endorsement.
Certification Basis
11.2.1.9 An Aerodrome’s CB is an agreed set of requirements needed to support safe flight operations at the aerodrome. To receive an Aerodrome Certificate, the aerodrome must be compliant with the CB. The basis of a Defence Aerodrome CB is a set of standards, which are recognised, credible and defensible. The Authority identifies these recognised standards within Section 6 of the Defence Aviation Safety Design Requirements Manual (DASDRM) (For details on the DASDRM, refer to Annex A). The applicable requirements extracted from the DASDRM are tailored to take into account the operating intent of the aerodrome. The CB may also include any special detailed technical requirements that address unique issues beyond the scope of the design requirements contained in the DASDRM. A CB thus comprises of:
applicable design requirements prescribed in the relevant chapter of Section 6 of the DASDRM
any tailoring to the above design requirements to meet an aerodrome’s operating intent
any additional technical requirements that are needed to address unique issues beyond the scope of design requirements in Section 6 of the DASDRM.
11.2.1.10 DASA has developed templates to support the creation of Certification Basis for land-based aerodromes intended primarily for use by fixed wing aircraft; land-based heliports, and shipborne heliports. These templates contain all the design requirements from Chapter 2, Chapter 3, and Chapter 4 of Section 6 of the DASDRM respectively that the applicant can use to develop a CB and track certification activities.
11.2.1.11 For shipborne heliports the CB will normally be established as part of the Projects Material Seaworthiness Requirement Set (MSRS) as defined in the N-Library. Notwithstanding the Seaworthiness system requirements, the subset of a Projects MSRS related to aerodrome certification (those requirements based on the DASDRM design requirements) – the shipborne heliport CB requires DASA agreement.
Operating intent informing the Certification Basis
11.2.1.12 As the operations taking place at each Defence aerodrome are unique, not all the requirements contained in the DASDRM are applicable to every aerodrome. To help identify those requirements that are relevant and those requirements that are not, there is a clear need for an understanding of the operations taking place at an aerodrome. The achievement of the design, construction and certification of an aerodrome is unlikely without the understanding of the operations at the aerodrome. As such, a documented operating intent is critical to establishing a CB and gaining certification. A documented operating intent is also likely to help inform development of compliance demonstration programs and support on-going safe flight operations at the aerodrome.
11.2.1.13 A high-level description of the facilities and operations at an aerodrome are often captured in a Statement of Operating Intent (SOI) (or similar documents – similar documents may include the Statement of Operating Intent and Usage (SOIU) and the Operating and Support Intent (OSI)) for an aerodrome). While DASA does not mandate the development or update of a specific document for Defence aerodromes (such as a SOIU), it is important to have this information documented before commencing the development of the CB. The basis for tailoring DASDRM requirements is a documented operating intent, justifying the removal of different requirements that are not relevant to the aerodrome, or identifying and adding special technical requirements. The Certification Basis Templates provide the functionality to capture the justification of tailoring of the design requirement set.
Certification Basis tailoring
11.2.1.14 The provisional CB represents the ‘target’ aerodrome design and construction requirements (note – use of the term ‘provisional CB’ is simply because there may be additional tailoring identified as the design and production process develops). During design and construction of an aerodrome, it is unlikely that there will be compliance with all the design requirements of a provisional CB. These shortfalls require management to ensure elimination of any risks posed by the non-compliances or that they are otherwise minimised SFARP. Addressing these shortfalls will result in changes to the CB. These changes need to be done through the Military Aerodrome Certification Review Item (MACRI) where either alternate requirements are used which have been demonstrated to achieve an equivalent level of safety or limitations/treatments are applied to the CB requirement to eliminate or otherwise minimise risks SFARP to safe flight operations.
11.2.1.15 Tailoring of the CB must be based upon:
a safety argument that demonstrates an equivalent level of safety can be achieved through a tailored design requirement, or
detailed Safety Risk Management (SRM) (normally in the form of an Aerodrome Issue Paper (ADIP)) if compliance with the design requirement would adversely affect Defence capability, and risks to aviation safety can be eliminated or otherwise minimised SFARP through alternate means.
11.2.1.16 The Certification Basis Templates can be used to identify the tailoring that has occurred and reference all the supporting documentation.
11.2.1.17 DASA approves aerodrome CBs and any changes to an extant CB. Approval of the provisional CB for an aerodrome can be through a formal standalone approval of the CB or combined with approval of the CPP.
11.2.1.18 Approval for updates to a CB can be through a formal standalone process similar to that undertaken for a provisional CB or combined with the CPP for the change. For a change, the applicant only needs to identify the affected CB requirements for approval.
11.2.1.19 DASA must approve all tailoring of the CB prior to the application of the aerodrome certificate.
Demonstrate compliance
11.2.1.20 Once the CB has been established, and the design and construction of an aerodrome commenced or completed, the applicant needs to demonstrate, through the production of evidence, that the design and construction of the aerodrome meets the agreed CB.
11.2.1.21 Compliance demonstration evidence must be available for inspection by the DASA (on a non-exhaustive basis) in order to provide independent assurance that the evidence is suitable, and that the evidence demonstrates compliance to the agreed CB requirements.
11.2.1.22 Compliance demonstration evidence is contained in compliance documents. It may consist of design data, test plans and reports, analyses, drawings, processes, material specifications, operating limitations, aerodrome manual and supplements, and maintenance program and supplements amongst others. The applicant is responsible for demonstrating compliance by the agreed means during the CP, and making the evidence available to DASA for inspection.
11.2.1.23 Generation of evidence is solely the responsibility of the applicant. All compliance documents must be independently checked by the applicant and signed as complete and accurate regardless of DASA’s inspection requirements. The applicant shall compile a list of evidence produced to demonstrate compliance against each line item of the CB; and provide a formal declaration that the design and construction of the aerodrome entirely meets the requirements of the CB. The evidence can be captured in the DASA CB template tool or another applicant specified means. A ‘User Guide – Certification Basis Template Guidance’ provides information on how to use the CB template tool to capture the compliance demonstration evidence which can be obtained from DASA.
11.2.1.24 The process for the RANs Materiel Assurance, described in the N-Library, will normally be used to plan and complete compliance demonstration for shipborne heliports. However, the requirement to make all evidence that demonstrates compliance to the agreed CB available to DASA is still applicable.
11.2.1.25 Throughout the CP, DASA will inspect selected compliance evidence to the extent necessary to assure the safety of the design and construction of the aerodrome. DASA will review, on a non-exhaustive basis, any compliance evidence used to support the declaration of compliance to provide the independent assurance necessary to support the granting of an Aerodrome Certificate.
Management of non-compliances
11.2.1.26 During compliance demonstration activities and over the life of the aerodrome, shortfalls / non-compliances against the aerodrome CB design requirements may be identified. Non-compliances against the CB should be examined for impact to certification and safety of flight operations.
11.2.1.27 Where it is not reasonably practicable to change the aerodrome design OR where evidence cannot be generated to demonstrate compliance with a design requirement in the CB, the applicant should pursue approval for tailoring of the CB. Central to this tailoring process are the MACRI and the ADIP.
11.2.1.28 A MACRI is a document, which captures an applicant’s proposal to modify an aerodromes CB design requirement, and DASA approval of the modification. There are two types of MACRI, an Equivalent Safety Finding (ESF) MACRI and an Exception MACRI. Development of a MACRI should only proceed if it is not reasonably practicable to eliminate the risks through engineering / design changes. For details on the MACRI process, refer to Factsheet – Military Aerodrome Certification Review Items.
11.2.1.29 ADIP are used when an applicant identifies an enduring design deficiency, which requires a risk treatment decision by Command. An ADIP usually underpins an Exception MACRI but may also be used to support an ESF MACRI. A safety argument should normally be used to support an ESF MACRI. However, if the Safety argument is complex and the controls contentious, an ADIP can be used to capture the argument and controls and gain operator agreement. Factsheet Aerodrome Issue Paper describes what constitutes an ADIP, and illustrates the process for raising and processing an ADIP, including the roles of the applicant / person evaluating the Non-compliance, and the roles of the DASA and Command.
11.2.1.30 By Approving an ADIP, DASA is providing assurance that the risk management is following the 7-Step SRM process and is defensible. By approving a MACRI, DASA approves the tailoring of the CB. Once approved by DASA, any tailoring of the CB requirements should be captured in the CB Template, or an applicant specified template, with the corresponding MACRI information. For details on how to use the template to capture this information, refer to the User Guide – Certification Basis Template which can be obtained from DASA.
11.2.1.31 DASA reviews all MACRIs and supporting ADIP and will provide approval if the DASA is assured a credible and defensible safety argument or application of the SRM has been completed. The approval provides agreement to the change in the CB requirement.
Declare compliance
11.2.1.32 When applying for certification of an Aerodrome under DASR 139.80, the applicant must make a declaration of compliance. The purpose of the declaration is to ensure the applicant organisation has considered and confirmed that compliance has been demonstrated to all CB requirements and no aspect is unsafe for use as intended. The applicant must identify a suitable person to make the declaration – usually the person responsible for design/manufacture/inspection of the aerodrome.
11.2.1.33 The person chosen to declare compliance must be a competent, qualified and authorised individual. Whilst DASA does not mandate whom is such a person, the applicant is to propose and justify why the nominated person is suitable. DASA does however have the expectation that the person making the declaration would be a senior engineer of an accountable organisation. This person does not have to be a part of the applicant’s organisation; though this should be clearly identified in the Certification Program Plan.
11.2.1.34 When all Military Aerodrome Certification Review Items (MACRIs) have been approved and all compliance demonstration evidence has been developed and approved, the applicant is in a position to make a declaration that the design and construction of the aerodrome entirely meets the requirements of the CB. The declaration can be made as part of the application for an Aerodrome Certificate, for which a DASA form has been developed (see Forms area below), or via another means (which could be formally agreed in the CPP).
11.2.1.35 The declaration of compliance is made by the applicant organisation, with the applicant declaring that:
the Design meets the Certification Basis
the Construction meets the Design
all non-compliance issues are addressed through DASA approved MACRIs.
11.2.1.36 Declaration of compliance can only be completed:
after DASA approval of all MACRIs
and after compliance has been shown against ALL requirements in the CB
11.2.1.37 An applicant can make their Declaration in the Aerodrome Certification application form (Application for Aerodrome Certificate). When submitting an application for an Aerodrome Certificate, the submission of the declaration of compliance must be accompanied with:
the Certification Check List (CCL) - to be made available and can be attached as an Annex to the application form
DASA must be given access to all compliance evidence referenced in the CCL
evidence of arrangements to support continued compliance with the CB
evidence of arrangements to manage design information for continuing safe operations.
11.2.1.38 Prior to completion of the declaration of compliance and all supporting documentation, the Applicant may choose to invite DASA to review completed compliance demonstration evidence and/or supporting documents.
11.2.1.39 The Applicant should be pro-active and engage with DASA as early as possible in the certification process to plan for early reviews of completed documents.
11.2.1.40 DASA will not review early draft versions, only mature drafts of documents.
11.2.1.41 The applicant can use the CB template, developed by the DASA, to keep track of compliance demonstration activities against each line item of the CB, including MACRI submissions and approvals. Evidence of arrangements to support continued compliance with the CB, and evidence of arrangements to manage design information for continuing safe operations can be referenced in this template. Once completed, the CCL sheet from the template can be attached as an annex to the Application form. While the use of this CB template is not mandatory, the information captured within a completed CCL needs to be made available to the DASA in an easily discernible manner. For details on how to use the CB template, refer to the User Guide – Certification Basis Template which can be obtained from DASA.
11.2.1.42 DASA will review the compliance declaration, including the personnel competency of the person making the declaration, as part of the aerodrome certification.
11.2.1.43 DASA may choose to inspect some, most or all of the compliance demonstration evidence provided by the applicant. The applicant has the responsibility to ensure all compliance evidence is available to DASA.
Establishing arrangements for continued compliance
11.2.1.44 Continued (Design) aerodrome compliance encompasses all tasks, to be carried-out to verify that the conditions under which an aerodrome certificate has been granted, continue to be fulfilled throughout its period of validity. Arrangements that enable continued aerodrome compliance are an integral part of aerodrome certification. DASA must be assured that the aerodrome will continue to comply with the aerodrome certification basis and that the safe design of the aerodrome will be retained through the service life of the Aerodrome to issue and maintain certification.
11.2.1.45 Aerodromes can have a long service life, and changes are often made to the aerodrome design, construction and operation during that service life. Furthermore, the original design and/or construction of the aerodrome may include latent defects, not evident at the time of original certification. Arrangements to support continued aerodrome compliance with the aerodrome certification basis is essential. The following systems and procedures are a minimum to be implemented to support continued compliance:
A system to retain, and retention of all relevant design information, drawings and test reports; including inspection records for the aerodrome.
A system and procedures to capture and manage the configuration of the aerodrome design.
A system and processes to collect, investigate and analyse reports of and information related to failures, malfunctions, defects or other occurrences which might adversely affect safe operation of the aerodrome, and to implement corrective action if warranted.
11.2.1.46 For initial certification, the applicant is to establish and provide evidence of these systems and procedures. These arrangements will then be implemented and monitored by the AD OPR in service.
11.2.1.47 DASA will review, on a non-exhaustive basis, the information and procedures provided for continued aerodrome compliance arrangements amongst other things before issuing an aerodrome certificate. Furthermore, DASA may review any non-compliance, occurrences or design defects communicated by the applicant and/or the AD OPR for the potential to affect the certification status and whether the actions taken to maintain support to safe flight operations are credible and defensible.
11.2.1.48 A record of the documents and information that is provided for supporting continued safe operations can be captured in the Aerodrome Certification Basis Template. The template and guide for use of the template can be found on the DASA website.
Establishing arrangements for continuing safe operations
11.2.1.49 An Aerodrome Operator must ensure that, at any time in its operating life, an aerodrome condition supports safe flight operations. The design information that enables the AD OPR to execute the continuing function is an integral part of aerodrome certification. DASA must be assured that the AD OPR has sufficient information to ensure that the conditions for safe flight operation are met to issue and maintain certification. An applicant for aerodrome certification must provide (amongst other things) the design information and procedures in order to enable the AD OPR to ensure the continuing safe flight operations at the Aerodrome. The following information is the minimum required to be provided:
Documents that describe specific scheduled maintenance task and their frequency of completion
Descriptive data and instructions that enable inspections, processes and procedures necessary to keep the aerodrome in a condition for safe flight operation
11.2.1.50 The AD OPR will use this information to develop and conduct maintenance and inspection processes and procedures to ensure that the aerodrome is always in a condition to support safe flight operations.
11.2.1.51 DASA will review, on a non-exhaustive basis, the information and procedures associated with continuing safe operation of the aerodrome before issuing an aerodrome certificate. Upon becoming aware of any non-compliance, the applicant and/or the AD OPR should bring this to the attention of DASA as it has the potential to affect the certification status.
Application for an Aerodrome Certificate
11.2.1.52 On completion of all compliance demonstration, including approval of all MACRIs, the applicant should start completing the application form for an Aerodrome Certificate. An application to DASA for an aerodrome certificate should use DASA Form – Application for Aerodrome Certificate. Submit the form, along with the supporting documentation, via the DASA Aerodromes Group Mailbox for approval.
11.2.1.53 Aerodrome Continued Compliance and Continuing Safe Operation are also integral parts of Aerodrome Initial Certification. For issue of an Aerodrome Certificate by the DASA, the applicant must (amongst other things) implement arrangements to support continued aerodrome compliance with the CB and provide design information to support the continuing safe operation of the Aerodrome. Before an application is made these aspects should be completed.
Aerodrome design changes
11.2.2.1 Any change to the design, construction or operations of an aerodrome, that has appreciable effect on the safety of flight operations or changes the aerodrome configuration so that it deviates from the DASA agreed CB, invalidates the aerodrome certificate and therefore, must be presented to DASA for re-certification. The purpose of the re-certification process is to assure that the aerodrome continues to be subject to engineering rigour and that the aerodrome remains in a condition that supports safe-flight operations over its service life.
11.2.2.2 Approval of all design changes follows the same principles of certification of a new aerodrome. For all changes, including changes to the Operating intent that affect the design, the certification basis of the change must be established, the means of compliance determined and compliance with the certification basis demonstrated and declared. Alteration of any design data covered by the Aerodrome Certificate and used for Aerodrome Continued Compliance or authorised data for completing Aerodrome continuing compliance also requires a design change approval.
11.2.2.3 Changes that have no appreciable effect on the safety of flight operations do not require presentation to DASA. Any change which changes the agreed CB requires DASA approval. The expectation is that an AD OPR will use professional judgement in determining whether a design change has an ‘appreciable’ effect on safety, and when in doubt should consult DASA. Determinations for these changes must be available and may be subject to DASA review during oversight activities. The AD OPR is expected to apply the same rigour / standard in implementing those design changes without an appreciable effect on safety of flight, as they would for those changes when they apply to DASA. That is, they should comprehensively complete all steps of the certification process, as applicable, without needing to submit the application to DASA.
11.2.2.4 DASA will agree to CP and approve CB requirements for those changes submitted to DASA, inspect selected compliance evidence, approve all tailoring of requirements and approve all applications for changes. The applicant is encouraged to consult the DASA if there is any doubt regarding whether a change requires re-certification.
11.2.2.5 For any change, the applicant should discuss the content of the CP with DASA until both parties are satisfied, then submit a simplified CP to seek agreement from DASA.
11.2.2.6 An application for DASA’s certification for an aerodrome is to be made by writing to DASA. The application should include reference to all information required to be developed by the CP. The Application for a change to the aerodrome certificate can be made using the Application for Aerodrome Certificate.