14 CFR 125.177
§ 125.177 Control of engine rotation.
United States · 14 CFR — Aeronautics and Space · Status: effective
Cite this
- Citation
- 14 CFR 125.177, § 125.177 Control of engine rotation, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/57107
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Full text
(a) Except as provided in paragraph (b) of this section, each airplane must have a means of individually stopping and restarting the rotation of any engine in flight.
(b) In the case of turbine engine installations, a means of stopping rotation need be provided only if the Administrator finds that rotation could jeopardize the safety of the airplane.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.