14 C.F.R. § 33.53 Engine component tests.
Title 14 - Aeronautics and Space
(a) For each engine that cannot be adequately substantiated by endurance testing in accordance with §33.49, the applicant must conduct additional tests to establish that components are able to function reliably in all normally anticipated flight and atmospheric conditions. (b) Temperature limits must be established for each component that requires temperature controlling provisions in the aircraft installation to assure satisfactory functioning, reliability, and durability.
Title 14: Aeronautics and Space
PART 33—AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES
Subpart D—Block Tests; Reciprocating Aircraft Engines
§ 33.53 Engine component tests.
