spaschal on DSK3GDR082PROD with CFR

Federal Aviation Administration, DOT

Section 29.1459

(c) Each cockpit voice recorder must
be installed so that the part of the
communication or audio signals specified in paragraph (a) of this section obtained from each of the following
sources is recorded on a separate channel:
(1) For the first channel, from each
microphone, headset, or speaker used
at the first pilot station.
(2) For the second channel, from each
microphone, headset, or speaker used
at the second pilot station.
(3) For the third channel, from the
cockpit-mounted area microphone, or
the continually energized or voice-actuated lip microphones at the first and
second pilot stations.
(4) For the fourth channel, from - 
(i) Each microphone, headset, or
speaker used at the stations for the
third and fourth crewmembers; or
(ii) If the stations specified in paragraph (c)(4)(i) of this section are not required or if the signal at such a station
is picked up by another channel, each
microphone on the flight deck that is
used with the passenger loudspeaker
system if its signals are not picked up
by another channel.
(iii) Each microphone on the flight
deck that is used with the rotorcraft-s
loudspeaker system if its signals are
not picked up by another channel.
(d) Each cockpit voice recorder must
be installed so that - 
(1)(i) It receives its electrical power
from the bus that provides the maximum reliability for operation of the
cockpit voice recorder without jeopardizing service to essential or emergency
loads.
(ii) It remains powered for as long as
possible without jeopardizing emergency operation of the rotorcraft.
(2) There is an automatic means to
simultaneously stop the recorder and
prevent each erasure feature from functioning, within 10 minutes after crash
impact;
(3) There is an aural or visual means
for preflight checking of the recorder
for proper operation;
(4) Whether the cockpit voice recorder and digital flight data recorder
are installed in separate boxes or in a
combination unit, no single electrical
failure external to the recorder may
disable both the cockpit voice recorder

and the digital flight data recorder;
and
(5) It has an independent power
source - 
(i) That provides 10 Section1 minutes of
electrical power to operate both the
cockpit voice recorder and cockpitmounted area microphone;
(ii) That is located as close as practicable to the cockpit voice recorder;
and
(iii) To which the cockpit voice recorder and cockpit-mounted area
microphone are switched automatically in the event that all other power
to the cockpit voice recorder is interrupted either by normal shutdown or
by any other loss of power to the electrical power bus.
(e) The record container must be located and mounted to minimize the
probability of rupture of the container
as a result of crash impact and consequent heat damage to the record
from fire.
(f) If the cockpit voice recorder has a
bulk erasure device, the installation
must be designed to minimize the probability of inadvertent operation and actuation of the device during crash impact.
(g) Each recorder container must be
either bright orange or bright yellow.
(h) When both a cockpit voice recorder and a flight data recorder are
required by the operating rules, one
combination unit may be installed,
provided that all other requirements of
this section and the requirements for
flight data recorders under this part
are met.
[Amdt. 29-6, 35 FR 7293, May 9, 1970, as
amended by Amdt. 29-50, 73 FR 12564, Mar. 7,
2008; 74 FR 32800, July 9, 2009; Amdt. 29-52, 75
FR 17045, Apr. 5, 2010]

Section 29.1459 Flight data recorders.
(a) Each flight recorder required by
the operating rules of Subchapter G of
this chapter must be installed so that:
(1) It is supplied with airspeed, altitude, and directional data obtained
from sources that meet the accuracy
requirements of SectionSection 29.1323, 29.1325, and
29.1327 of this part, as applicable;
(2) The vertical acceleration sensor is
rigidly attached, and located longitudinally within the approved center of
gravity limits of the rotorcraft;

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