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COMM --- Pilot’s Control Wheel (Copilot’s opposite)
Figure 05---20---3
Pilot’s Control Wheel
(Copilot’s Opposite)
Radio Transmit (RT)
Intercom (IC)
Used to transmit on radios
or passenger address
system.
RT -- When held, permits
communication using
headset or oxygen mask
microphones.
IC -- Provides hot mic talk
through interphone
system.
B. Ground Crew Interphone
There are four external interphone stations in the following locations:
S External AC service panel
S Refuel/defuel panel
S Avionics compartment
S Aft equipment compartment.
The CALL switches on the interphone panel external service panel are used to call
either the pilot or maintenance. When either CALL switch is pressed and released,
both lights are illuminated for 30 seconds and a two tone chime sounds in the aircraft.
REV 56, Jan 31/03
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COMMUNICATIONS
Audio Integrating System
Flight Crew Operating Manual MASTER
CSP A--013
Jack Panel
Figure 05---20---4
TYPICAL PANEL--
AVIONICS BAY
REAR EQUIPMENT BAY
OBSERVERS STATION
FORWARD WARDROBE UNIT
HDPH
MIC
--Headphone Jack
--Boom Microphone Jack
Hand Microphone Jack
PILOT’S SIDE CONSOLE COPILOT’S SIDE CONSOLE
(Attached to rear of control column)
CONTROL COLUMN
EXTERNAL SERVICE PANEL
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COMMUNICATIONS
Audio Integrating System
Flight Crew Operating Manual
CSP A--013
MASTER
Interphone Control Units <MST>
Figure 05---20---5
Interphone Panel
Center Pedestal
External Service Panel
<0040>
<0040>
MECH CALL Switch/light
Used by flight crew to call ground crew or
answer ground crew call.
Pushed in -- Flight compartment call to ground
crew. CKPT CALL switch/light on external
service panel comes on to indicate call to
ground crew.
Lit (white) -- Ground crew to flight
compartment call.
CALL (white) -- Ground crew to flight
compartment call.
COCKPIT CALL Switch/Light
Used by ground crew to call flight crew.
Pushed in -- Ground crew call to flight
compartment. MECH CALL switch/light
on flight compartment centre pedestal
comes on to indicate call from ground
crew. Two--tone chime sounds in flight
compartment.
Lit (amber) -- Flight compartment to
ground crew call.
REV 56, Jan 31/03
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COMMUNICATIONS
Audio Integrating System
Flight Crew Operating Manual MASTER
CSP A--013
C. Attendant’s Handset
Switches on the attendant’s handset cradle and on the intercom control panel, in the
flight compartment, are used for routing communications to the crew and passengers.
On the handset cradle, the ATT button signals both attendant stations by illuminating
the ATT indicators green. To call the flight crew, the attendant removes the handset
from the hook and presses the FLT or the EMG button. This will illuminate the CALL or
EMER light on the intercom control panel and sound a high-low chime on the flight
compartment speakers. When PA is selected on the intercom control panel, and the
RT/IC switch, on the control wheel, is set to IC, two-way conversation is established.
The galley speaker is muted when a flight attendant’s handset is activated.
Attendant’s Handset
Figure 05---20---6
Attendant’s Handset
FLT (green led)
Used to call
flight crew.
Press to Talk
Used when cabin
attendants talk on
passenger address
system.
EMG (amber led)
Used to call
flight crew.
PA (green led)
Used to address
passengers.
ATT (green led)
Used to call
other flight
attendant.
Handset acts as hot
microphone (for internal
communications) when
removed from handset
switch hook.
NOTE
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COMMUNICATIONS
Audio Integrating System
Flight Crew Operating Manual
CSP A--013
MASTER
D. Passenger Address System
The passenger address system allows both pilots and flight attendants to make
announcements to the passengers.
Cabin speakers are installed in the passenger service unit above each passenger seat.
Additional speakers are installed in the lavatory and the galley. Volume of the cabin
speakers is automatically adjusted for engine background noise.
Pressing in the PA button on the handset cradle and pressing the PTT switch in the
handset allows either flight attendant to make an announcement on the PA system.
　
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