Sec. 25.603 - Materials.
The suitability and durability of
materials used for parts, the failure of which could adversely affect
safety, must --
(a) Be established on the basis of
experience or tests;
(b) Conform to approved specifications
(such as industry or military specifications, or Technical Standard
Orders) that ensure their having the strength and other properties assumed
in the design data; and
(c) Take into account the effects of
environmental conditions, such as temperature and humidity, expected in
service.
[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as
amended by Amdt. 25-38, 41 FR 55466, Dec. 20 1976; Amdt. 25-46, 43 FR
50595, Oct. 30, 1978]