U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 14Chapter IPart 27Subpart D - Subpart D—Design and Construction
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(a) Each closed cabin must have at least one adequate and easily accessible external door.
(b) Each external door must be located where persons using it will not be endangered by the rotors, propellers, engine intakes, and exhausts when appropriate operating procedures are used. If opening procedures are required, they must be marked inside, on or adjacent to the door opening device.
