As discussed in Section 2 Chapter 6, the Authority prescribed challenging environment contemporary crash protection standard is the sum of the following:
design requirements provided by the latest amendment of MIL-STD-1290A, plus
HIC and femur load requirements of FAR or CS 2X.562 (whichever is most demanding) using the FAR/CS appropriate for the type and size of aircraft, plus
equipment requirements specified in the most demanding operational regulations of the FARs, CSs and EU CAT.
This annex presents additional detail on the application of the components of the challenging environment CCPDR.
MIL-STD-1290A presents a contemporary military crash protection standard requiring minimal supplementation, other than from design standards referred to within MIL-STD-1290A including:
MIL-DTL-27422D–Detail Specification for the Tank, Fuel, Crash-Resistant, Ballistic-Tolerant, Aircraft
MIL-S-58095A–Seat System: Crash-Resistant, Non-Ejection, Aircrew, General Specification for
MIL-S-85510–Seats, Helicopter Cabin, Crashworthy, General Specification for
MIL-H-83796B–Hose Assembly, Rubber, Lightweight, Medium Pressure, General Specification for
MIL-PRF-83282D–Hydraulic Fluid, Fire Resistant
MIL-DTL-25579F–Hose Assembly, High Temperature, Medium Pressure General Specification for
MIL-H-38360B–Hose Assemblies, High Temperature, High Pressure, 3000 psi, Hydraulic and Pneumatic.
JSSG 2010-7 and the Aircraft Crash Survival Design Guide provide additional detailed guidance on the application of crash protection design requirements in the military context.
MIL-STD-1290A must be supplemented with FAR or CS 2X.562 (whichever is more demanding) for measuring head injury and femur loads in the design of seats. The associated FAA advisory circulars (ACs 27-1B, 29-2C, 23.562-1 or 25.562-1B as applicable) provide additional guidance on means of compliance for these crash protection design features.
MIL-STD-1290A must be supplemented with the operational regulation clauses of the FARs and EU CAT that provide crash protection requirements detailed in Annex A to Section 2 Chapter 6. These operational requirements are equally applicable to, and form part of, the Authority prescribed challenging environment contemporary crash protection design standard.