U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 14Chapter IPart 27Subpart D - Subpart D—Design and Construction
View all text of Subpart D [§ 27.601 - § 27.873]
§ 27.691 - Autorotation control mechanism.

Each main rotor blade pitch control mechanism must allow rapid entry into autorotation after power failure.

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