Communications Flashcards
Describe the Flight Interphone System
▪ Permits communication between:
• Captain
• First Officer
• 3rd Occupant
• Ground personnel connected at the External Power Panel
Uses INT controls on the ACP
Describe the Cabin Interphone System
▪ Permits communication between the flightdeck and cabin.
Uses CAB controls on ACP
Describe the Service Interphone System
▪ Permits communication between the flight deck and the numerous exterior maintenance receptacles.
Uses CAB controls on ACP
Recall the purpose of the Radio Management Panels (RMPs).
Used to select and tune all communication radios, SELCAL and standby navigation radios
Recall the purpose of the Audio Control Panels (ACPs).
▪ Selection of radios and interphone system for transmission and reception
▪ Control of reception volume
▪ Transmission on the Public Address (PA) system
▪ Filtering of Morse code signals from NAVAID reception.
Recall the function of each position of the INT/RAD switch.
o INT – allows hands-free (“hot mic”) transmission on the Flight Interphone system
through a headset boom or oxygen mask microphone.
o Neutral – requires the use of a sidestick trigger for transmission.
o RAD (Spring-Loaded) – allows transmission for the selected transmission key .
Recall the function of the AUDIO SWITCHING selector
o Permits selection of ACP 3 by either pilot in the event their respect ACP has
failed.
o When CAPT 3 or F/O 3 has been selected, “AUDIO 3 XFRD” appears on the
memo section of the E/WD.
NOTE: Use of ACP 3 does not affect either RMP’s operation
Recall the indications when receiving a transmission from SELCAL, Mechanic, or Cabin Crew
o SELCAL:
▪ CALL flashes in amber within the respective communication radio
transmission keys (VHF 1/2/3 or HF 1/2).
▪ Buzzer sounds on flightdeck.
o Mechanic: Ground call from the External Power Panel
▪ MECH flashes in amber within the INT transmission keys.
▪ Buzzer sounds on flightdeck.
▪ Light goes off after 60 seconds if it is not reset.
o Cabin Crew:
▪ ATT flashes in amber within the CAB transmission keys.
▪ Buzzer sound on the flightdeck.
▪ Light goes off after 60 seconds if it is not reset.
NOTE: Pressing the RESET key on the ACP will extinguish a
flashing CALL, MECH, or ATT light.
Recall how flightdeck oxygen mask microphones are activated and de-activated
o Activation:
▪ Occurs by opening the mask’s storage compartment’s left-hand door.
▪ A white OXY ON flag indicates that the microphone is enabled.
o De-activation:
▪ Occurs by closing the respective compartment’s left-hand door, and then
pressing the PRESS TO TEST AND RESET button.
NOTE: Oxygen mask microphones are available for the Captain’s, First Officer’s, and 3rd occupant’s oxygen masks. The 4th
occupant’s oxygen mask microphone is not operational.
Describe the two methods of making a Public Announcement (PA).
Handset on center pedestal
Pressing and holding the PA transmission key on the ACP, and speaking
into a headset boom or oxygen mask microphone.
Explain the controls on the overhead CALLS panel.
o ATTND ADV pb
o MECH pb
o FWD pb:
o AFT pb:
o EMER pb:
o ATTND ADV pb – NOT used by DAL
o MECH pb:
▪ COCKPIT CALL light illuminates on the external power panel.
▪ External horn sounds at the nose of the aircraft.
o FWD pb:
▪ High/low chime sounds at the forward section of the cabin and CAPTAIN CALL appears at the forward Flight
Attendant panel.
o AFT pb:
▪ High/low chime sounds at the aft section of the cabin and CAPTAIN CALL appears at the aft Flight Attendant
panel.
o EMER pb:
▪ ON in white and CALL in amber flash within the pb.
▪ High/Low chime sounds three times throughout the cabin.
▪ EMERGENCY CALL appears on all Flight Attendant panels.
Explain the function of the controls on the RCDR panel.
o GND CTL pb:
▪ ON (blue) - Cockpit Voice Recorder (CVR) and Digital Flight Data Recorder (DFDR) are actively recording.
▪ AUTO (lights out) - the CVR & DFDR automatically start recording with first engine start.
o CVR ERASE button - Erases the CVR tape if the button is pressed for a brief time provided:
• Aircraft is on the ground
• Parking brake is on.
o CVR TEST button - Tests the CVR provided:
• GND CTL pb is selected ON
• Parking brake is set.
• Low frequency tone is heard through the flight deck loudspeaker which indicates a successful test.
