CS 22.1853 Engine component test
CAA ORS9 Decision No. 1
(a) For engine components that cannot be adequately substantiated by endurance testing in accordance with CS 22.1849(a) to (c), 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 to ensure satisfactory functioning, reliability and durability.