Text in force at 23-63: from 23-23, effective 1 Dec 1978.
[(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. Notice of Airworthiness Review Program No. 2; Notice No. 75-10; Issued on 02/27/75. Notice of Airworthiness Review Program No. 3; Notice No. 75-19; Issued on 05/13/75. Notice of Airworthiness Review Program No. 5; Notice No. 75-23; Issued on 05/19/75. Notice of Airworthiness Review Program No. 7; Notice No. 75-26; Issued on 06/09/75.
43 FR 50592 · Source