ED Decision 2014/015/R
SPECIFICATIONS
The public address system should:
(a) operate independently of the interphone systems except for handsets, headsets, microphones, selector switches and signalling devices;
(b) be readily accessible for immediate use from each required flight crew station;
(c) have, for each floor level passenger emergency exit that has an adjacent cabin crew seat, a microphone operable by the seated cabin crew member, except that one microphone may serve more than one exit, provided the proximity of exits allows unassisted verbal communication between seated cabin crew members;
(d) be operable within ten seconds by a cabin crew member at each of those stations;
(e) be audible at all passenger seats, lavatories, cabin crew seats and work stations and any other location or compartment that may be occupied by persons; and
(f) following a total failure of the normal electrical generating system, provide reliable operation for a minimum of ten minutes.
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