ED Decision 2014/015/R
SPECIFICATIONS
The crew member interphone system should:
(a) operate independently of the public address system except for handsets, headsets, microphones, selector switches and signalling devices;
(b) in the case of helicopters where at least one cabin crew member is required, be readily accessible for use at required cabin crew stations close to each separate or pair of floor level emergency exits;
(c) in the case of helicopters where at least one cabin crew member is required, have an alerting system incorporating aural or visual signals for use by flight and cabin crew;
(d) have a means for the recipient of a call to determine whether it is a normal call or an emergency call that uses one or a combination of the following:
(1) lights of different colours;
(2) codes defined by the operator (e.g. different number of rings for normal and emergency calls); or
(3) any other indicating signal specified in the operations manual;
(e) provide a means of two-way communication between the flight crew compartment and each crew member station; and
(f) be readily accessible for use from each required flight crew station in the flight crew compartment.
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