Communications

Question 1

(ALL) Describe the cockpit indications of an incoming cabin or ground call.

Answer 1

 A blue CABIN CALL or GND CALL light on the overhead panel

 Accompanied by a chime.

Question 2

(ALL) Describe the operation of the ACP’s (Audio Control Panels).

Answer 2

 Microphone Selector switches/lights
Push –
- The selected transmitter light illuminates.
- The light for any previously selected transmitter extinguishes.
- Selects the respective transmitter (radio or intercommunications)
for transmission from this crew station (only one switch can be
selected at a time for each crew station)
- Selects the receiver audio on, if not already manually selected.
 Receiver controls
Push –
- Turns the respective receiver ON / OFF at any volume setting.
Rotate –
- Varies the respective receiver volume.

 Boom/Oxygen (BOOM/OXY) switch
The BOOM position selects the pilot headset microphone
The OXY position selects the oxygen mask microphone
 FLIGHT / CABIN (FLT/CABIN) switch(If installed)
The FLT position selects the flight interphone system
The CABIN position selects the cabin interphone system

Question 3

(756) Understand the operation of the CABIN CALL and GND CALL
switches / lights on the overhead pilot call panel.

Answer 3

CABIN CALL switches / lights
 Illuminated – indicates a flight attendant call
- Resets when the call is answered or cancelled
- FWD, MID, and AFT also reset when the light is pushed
 Push – calls selected station(s)
- FWD, MID or AFT calls the selected station.
- ALERT calls all stations.

Ground Call (GND CALL) switch / light
 Illuminated – indicates a call from ground personnel.
- Extinguishes after 30 seconds
 Push – calls ground personnel as long as the switch is pushed.

Question 4

(ALL) Describe how to activate / deactivate the oxygen mask microphone.

Answer 4

Place the BOOM/ OXY switch to OXY to activate the oxygen mask microphone

Place the BOOM/ OXY switch to BOOM to de-activate the oxygen mask microphone and activate the pilot headset
microphone

Question 5

(ALL) Recall which microphones can be used for interphone/PA communications to the cabin.

Answer 5

 Handset
 Pilot headset
 Oxygen mask
 Hand microphone

Question 6

(756) Recall that on the 767 ER aircraft, the FLT INT switch on the overhead panel must be selected (Illuminated Blue) to communicate with the flight attendants.

Answer 6

Flight Interphone (FLT INT) switch / light
 Push – interconnects flight and cabin interphone systems.
 Illuminated – flight and cabin interphone systems are connected.
 Push again – returns to normal operation – light is extinguished.

Note:

• An additional (Right) ADF and receiver audio control was added on the 767 ER.
• The PTT switch was moved up and replaced the FLT / CABIN switch
• With the absence of a FLT / CABIN switch, ACP communication via the cabin interphone system must be made using the FLT INT switch on the overhead pilot call panel.

Question 7

(756) Understand the operation of the switches on the flight deck aft aisle stand handset.

Answer 7

Cabin Call switches (FWD, MID AFT)
 Push – calls the respective station.

RESET switch
 Push – cancels a call and resets the handset for subsequent
calls. (Same as stowing the handset).

PA Call switch
 Push – selects the PA system for subsequent announcement.

PASSENGER ADDRESS PUSH TO TALK switch
 Push and hold – keys PA system for announcement.

ALERT Call switch
 Push – calls all flight attendant stations.