INSTRUMENTS AND RECORDERS, COCKPIT VOICE RECORDER
Description
Aircraft Operations Manual
12/4.1
S4
PAGE
1
Applicable to A/C with Solid State with 2 hours recording time
1.
GENERAL
The Solid State Cockpit Voice Recorder (SSCVR)
records the last 2 hours of cockpit communications
and sounds using digital solid state memory cir-
cuits. The recorder has a crashproof memory
capsule and is installed in the rear compartment
accessible through the aft cargo compartment wall.
The SSCVR operates continuously until a force of
more than 2G opens the contacts of the inertia
switch, or the ESS AVION switch is set to OFF.
The SSCVR records four audio communication
channels from the PA system, the pilot and co
−
pilot
communication and the audio in the flight compart-
ment area. The CVR continuously records each of
the four audio inputs in the solid state flash memo-
ry. High quality audio for these four channels are
recorded for a period of 30 minutes. After this the
oldest parts of the data is automatically erased be-
fore the memory is used to record new data.
With a Solid State Cockpit Voice Recorder with 2
hours recording time is installed, both pilots and the
PA communications are combined in a fifth audio
channel and in the sixth audio channel the audio in
the flight compartment is recorded by the cockpit
area microphone. Both the fifth and the sixth audio
channel are recording with a standard quality for 2
hours.
The solid state memory can be erased provided
aircraft is on ground and gust lock set.
The recorder is provided with an underwater locator
beacon which is automatically started when sub-
merged in water. The locator is battery powered
and will send out acoustic signals for 30 days or 90
days depending on locator type.
2.
MAIN COMPONENTS AND SUBSYSTEMS
Not applicable.
Jun 01/20
