AMC 25.603 Suitability
and durability of materials
ED
Decision 2021/015/R
The term
‘material’ is differently interpreted, ranging from raw feedstock material to
the material state in a final complex part configuration that may have
undergone various processes. CS 25.603, CS 25.605, CS 25.613, and AMC 25.613 should therefore be considered together to
ensure the coherent and safe design and production of parts and thus maintain
occupant and aeroplane safety throughout the aeroplane’s operational life.
This is of growing importance as more and more production methods allow the
design of complex part configurations for which the characteristics of the
materials are defined close to completion of the part production, e.g.
castings, composite resin transfer methods, bonding, or additive manufacturing
methods. The applicants should therefore discuss with EASA, at an early stage
of the certification project, potential details supporting the means of
compliance with CS 25.603, CS 25.605, and CS 25.613.
Note:
organisations engaged in the design and certification of modifications or
repairs should also comply with these CSs and consider the related AMC.
Appropriately
defined tests and analysis pyramids (e.g. as outlined in AMC 20-29 for composite materials)
should support the certification of materials, processes, and/or fabrication
methods, including the development of the associated design values in more
complex part configurations and assemblies.
[Amdt
No: 25/27]
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