AMC
25.1447(c)(1) Equipment standards for oxygen-dispensing units
ED Decision 2017/015/R
1 When oxygen masks are presented, oxygen should be supplied to the mask but without flow.
2 Oxygen flow from the mask should be initiated automatically on pulling the mask to the face.
3 Facilities for manual presentation by a crewmember should be provided on each dispensing unit.
4 Indication of the operation of the automatic presentation system should be provided at the appropriate flight-crew station.
5 The design of the automatic presentation system should take into account that when the landing field altitude is less than 610 m (2000 feet) below the normal preset automatic presentation altitude, the automatic presentation altitude may be reset to landing field altitude plus 610 m (2000 feet).
6 A
supplemental oxygen supply should be provided for each passenger lying on a
bed or a seat that can be converted into a bed. Except for cases where the
occupant’s head location during sleeping is obvious, a placard indicating the
correct sleeping position should be installed, unless the passenger oxygen
system is designed to account for any sleeping position.
7 Sufficient illumination should be provided at all times or automatically when necessary (i.e. without the need of a crew action and without delay) at each location where supplemental oxygen is provided so that in the event of oxygen mask presentation, the user has sufficient visibility to enable quick donning.
[Amdt 25/19]
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