14 CFR 33.51
§ 33.51 Operation test.
United States · 14 CFR — Aeronautics and Space · Status: effective
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- Citation
- 14 CFR 33.51, § 33.51 Operation test, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/55073
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Full text
The operation test must include the testing found necessary by the Administrator to demonstrate backfire characteristics, starting, idling, acceleration, overspeeding, functioning of propeller and ignition, and any other operational characteristic of the engine. If the engine incorporates a multispeed supercharger drive, the design and construction must allow the supercharger to be shifted from operation at the lower speed ratio to the higher and the power appropriate to the manifold pressure and speed settings for rated maximum continuous power at the higher supercharger speed ratio must be obtainable within five seconds.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.