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Additional airworthiness requirements for the certification of an aeroplane with a type certificated seating capacity of more than 9 passengers, in addition to Appendix B, include the following:
Each external door and exit must—
(1) be operable from the inside and, except for sliding window exits in the flight crew compartment, the outside; and
(2) be unobstructed by seats, seat backs, or other equipment; and
(3) have a means—
(i) of locking that prevents inadvertent opening in flight by persons or as a result of mechanical failure; and
(ii) when the door’s initial opening movement is outwards, for the crew members to directly view the locking mechanism to determine that the door is fully closed and locked; and
(iii) when the door is normally used to load and unload the aeroplane, of visually indicating to the crew members that the door is not fully closed and locked.
(a) The passenger entrance door must meet the requirements of FAR 23 in effect on 10 May 1993 for a floor level emergency exit.
(b) Each aeroplane must be equipped with emergency exits additional to the passenger entrance door including—
(1) for an aeroplane with a type certificated seating capacity of less than 16 passengers, an exit on each side of the fuselage meeting the requirements of FAR 23.807(b) in effect on 10 May 1993; or
(2) for an aeroplane with a type certificated seating capacity of between 16 and 23 passengers—
(i) one exit on the same side as the passenger entrance door; and
(ii) two exits on the side opposite the passenger entrance door— meeting the requirements of FAR 23.807(b) in effect on 10 May 1993; or
(3) for an aeroplane with a type certificated seating capacity of more than 23 passengers, exits meeting the requirements for certification of that aeroplane type.
Each emergency exit required for the type certification of the aircraft must—
(1) be located over the wing; or
(2) for exits 2m or more from the ground with the aeroplane on the ground and the landing gear extended, have a means of assisting the occupants to descend to the ground.
Each emergency exit must be identified by a sign that—
(1) has the word EXIT in—
(i) 25 mm high white letters on a 50 mm high red background; or
(ii) 25 mm high red letters on a 50 mm high white background; and
(2) is self illuminating or is electrically illuminated independently from the main lighting system; and
(3) has a minimum brightness of 160 microlamberts.
(a) Each aeroplane equipped with wing flaps and retractable landing gear must have a landing gear aural warning device.
(b) Except as provided by paragraph (c), each landing gear aural warning device must—
(1) function continuously when the wing flaps are extended to a normal position for landing in preparation for landing, and the landing gear is not fully extended and locked; and
(2) not have a manual shut off.
(c) Paragraph (b)(2) does not apply to amphibious aeroplanes that provide for an adequate visual indication to the flight crew members that the aircraft is configured for a water landing.
