AMC to Appendix S, S25.10(b) Interior Doors on Commercially Operated Aeroplanes

In the case of an aeroplane which is not intended to be limited to non-commercial operations, the familiarity of the occupants with the specific cabin features of the aeroplane cannot be credited in the demonstration that, in the case of any probable failure or jamming of the door in a position other than fully open, any occupant is able, from any compartment separated by that door, to restore in an easy and simple manner a sufficient opening to access the compartment on the other side of the door (compliance with the condition S25.10(a)(3)); this means, for instance, that when the demonstration relies on the frangibility of the door, there should be a placard on each side of the door to indicate the presence and functioning of this feature. The requirement S25.10(b)(2)(ii) states that ‘the demonstration of compliance against the provision S25.10(a)(1) and (2) shall not rely on any passenger action, nor involve any flight crew member leaving their position in the cockpit’. Any of the following solutions may be employed to meet this requirement:

(1)An automatic system, for the opening of the door and retention of the door in the open and secured position.

(2)A control in the cockpit, compliant with CS 25.777, to activate remotely the opening of the door and retention of the door in the open and secured position.

(3)For aeroplanes required to have at least one cabin crew member on board, and the cabin crew is clearly tasked with ensuring that the door is open before entering any of the taxiing, take-off, and landing phases. Appropriate cabin crew procedures and cabin crew training should be established.

[Amdt 25/19]