YA686, YA687
Copyright . The Boeing Company. See title page for details.
Communications -Controls and Indicators 737 Flight Crew Operations Manual
Area Microphone
YA686 - YA809, YD651 - YD655
Active anytime 115V AC is applied to airplane.
YA613, YA626, YC153 - YC413, YK101 - YK104
Activated when an engine is started or the VOICE RECORDER switch is placed
in the ON position.
ERASE Switch (red)
Push (2 seconds) –
. all four channels are erased
. operative only when airplane is on ground and parking brake is set.
TEST Switch YA686, YA687
Push – after a slight delay and no faults are detected:
.
status light illuminates momentarily
.
a tone may be heard through a headset plugged into HEADSET jack.
TEST Switch YA613, YA626, YA721 - YK104
Push – after a slight delay and no faults are detected:
.
status light illuminates momentarily
.
a tone may be heard through a headset plugged into HEADPHONE jack.
HEADSET Jack YA686, YA687
Headset may be plugged into jack to monitor tone transmission during test, or to monitor playback of voice audio.
HEADPHONE Jack YA613, YA626, YA721 - YK104
Headphone may be plugged into jack to monitor tone transmission during test, or to monitor playback of voice audio.
STATUS Light YA613, YA626, YA721 - YK104
Illuminated (momentary green) – no faults are detected during recorder TEST.
Copyright . The Boeing Company. See title page for details.
5.10.28 June 1, 2005
Communications -Controls and Indicators 737 Flight Crew Operations Manual
TEST Light
Illuminates (green) - when the TEST switch is depressed.
Cockpit Voice Recorder Switch YA613, YA626, YC153 - YC413, YK101 - YK104
VOICE RECORDER Switch
AUTO - powers the cockpit voice recorder from first engine start until 5 minutes
after last engine shutdown ON - powers the cockpit voice recorder until first engine start, then trips the switch to AUTO.
Copyright . The Boeing Company. See title page for details.
Communications -Controls and Indicators
Call System
YA626, YA721 - YK104
Ground Call (GRD CALL) Switch
Push – sounds a horn in nose wheel well until released.
Attendant Call (ATTEND) Switch
Push –
.
sounds a two–tone chime in passenger cabin
.
illuminates both pink master call lights.
Flight Deck CALL Light
Illuminated (blue) – flight deck is being called by flight attendants or ground crew.
PILOT CALL Switch
Push – sounds a single–tone chime in flight deck.
CAPTAIN Call Switch
Push – sounds a single–tone chime in flight deck.
Copyright . The Boeing Company. See title page for details.
5.10.30 June 1, 2005
Communications -Controls and Indicators 737 Flight Crew Operations Manual
ATTENDANT Call Switch
Push –
.
sounds a two–tone chime in passenger cabin
.
illuminates both pink master call lights.
Call RESET Switch
Push –
.
extinguishes both pink master call lights
.
cancels call
.
disconnects the handset from the public address system.
Master Call Lights
Illuminated –
.
amber – a lavatory call switch is activated.
.
pink – flight deck or other flight attendant station is calling.
.
blue – a passenger seat call switch is activated. YA613, YA686, YA687
PASSENGER CABIN
FORWARD AND AFT
EXTERNAL POWER ATTENDANT CONNECTOR PANEL HANDSET
Ground Call (GRD CALL) Switch
Push – sounds a horn in nose wheel well until released.
Copyright . The Boeing Company. See title page for details.
Communications -Controls and Indicators 737 Flight Crew Operations Manual
Attendant Call (ATTEND) Switch
Push –
.
sounds a two–tone chime in passenger cabin
.
illuminates both pink master call lights.
PILOT CALL Switch
Push – sounds a single–tone chime in flight deck.
CAPTAIN Call Switch
Push – sounds a single–tone chime in flight deck.
ATTENDANT Call Switch
Push –
.
sounds a two–tone chime in passenger cabin
.
illuminates both pink master call lights.
Call RESET Switch
Push –
.
extinguishes both pink master call lights
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