Sec. 23.603 - Materials and workmanship.
(a) The suitability and durability of
materials used for parts, the failure of which could adversely affect
safety, must --
(1) Be established by experience or
tests;
(2) Meet approved specifications that
ensure their having the strength and other properties assumed in the
design data; and
(3) Take into account the effects of
environmental conditions, such as temperature and humidity, expected in
service.
(b) Workmanship must be of a high
standard.
[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as
amended by Amdt. 23-17, 41 FR 55464, Dec. 20, 1976; Amdt. 23-23, 43 FR
50592, Oct. 10, 1978]