U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

Searching within: All TitlesTitle 14Chapter IPart 33Subpart D - Subpart D—Block Tests; Reciprocating Aircraft Engines
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§ 33.47 - Detonation test.

Each engine must be tested to establish that the engine can function without detonation throughout its range of intended conditions of operation.