14 C.F.R. § 27.783 Doors.
Title 14 - Aeronautics and Space
(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. [Doc. No. 5074, 29 FR 15695, Nov. 24, 1964, as amended by Amdt. 27–26, 55 FR 8001, Mar. 6, 1990]
Title 14: Aeronautics and Space
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart D—Design and Construction
Personnel and Cargo Accommodations
§ 27.783 Doors.
