Cockpit voice recorders.

CFR · 2024-01-01 · US · Title 14

(a) Each cockpit voice recorder required by the operating rules of this chapter must be approved and must be installed so that it will record the following: (1) Voice communications transmitted from or received in the airplane by radio. (2) Voice communications of flightcrew members on the flight deck. (3) Voice communications of flightcrew members on the flight deck, using the airplane's interphone system. (4) Voice or audio signals identifying navigation or approach aids introduced into a headset or speaker. (5) Voice communications of flightcrew members using the passenger loudspeaker system, if there is such a system and if the fourth channel is available in accordance with the requirements of paragraph (c)(4)(ii) of this section. (6) If datalink communication equipment is installed, all datalink communications, using an approved data message set. Datalink messages must be recorded as the output signal from the communications unit that translates the signal into usable data. (b) The recording requirements of paragraph (a)(2) of this section must be met by installing a cockpit-mounted area microphone, located in the best position for recording voice communications originating at the first and second pilot stations and voice communications of other crewmembers on the flight deck when directed to those stations. The microphone must be so located and, if necessary, the preamplifiers and filters of the recorder must be so adjusted or supplemented, so that the intelligibility o

official document · source cfr-2024 · id 14:§ 23.1457