Communications Flashcards
Recall how to activate and deactivate the oxygen mask microphone:
A boom microphone/mask microphone switch is located within each oxygen
mask stowage box and connects either the boom or the mask microphone.
The boom microphone automatically connects to the communication
systems when the mask is stowed (and reset).
The mask microphone automatically connects to the communication
systems when the mask is out of its stowage box and is in use.
After the compartment doors are shut, pushing the TEST/RESET
Switch will stop the flow oxygen to the mask, reset the microphone from
mask to boom, and retract Oxy On flag.
Recall which radio systems are available for SELCAL and how to
recognize an incoming call:
The SELCAL system operates in conjunction with VHF & HF systems.
When a call is received, the respective MIC switch on the ACP
illuminates with a “C” and a chime from the central aural warning
system (CAWS) sounds through the cockpit speakers and headphones.
Recall who can communicate on the flight interphone:
The flight interphone system provides communications between the flight crew as well as communications at the external power panel and the avionics (E & E) compartment
Explain the location and purpose of the Maintenance Interphone
switchlight:
MAINT INTPH Switchlight – amber
ON - Push switchlight to activate all service interphone jacks located
throughout the airplane.
Located on the Forward Overhead Panel.
Recall how PA announcements can be made from the flight deck:
PA announcements from the cockpit can be made with:
1. service interphone handset
2. mask interphones
3. boom microphones
4. handheld microphones
When using the service interphone handset on the aft pedestal for PA
announcements, the PA switch on the overhead panel must be
selected to ON.
PA ON Switchlight - Push to connect the handset on the aft pedestal to
the PA system when the handset is removed from its hanger.
Audio Control Panel PA Button - Push - When the PA button is held, PA
transmissions can be made with either the boom or oxygen mask
microphone.
PA announcements from the cockpit have priority over the passenger
entertainment system and announcements made from any cabin
station.
COMM_008 Explain the operation of the Cockpit Voice Recorder (CVR):
The CVR operates automatically and continuously whenever power is
available to the airplane. No crew action is required.
With the parking brake set, and the airplane on the ground, pushing the
ERASE pushbutton on the CVR MICROPHONE MONITOR control panel
erases the recorder memory.
STATUS Light Illuminates to indicate a successful self-test of all input
channels. Does not illuminate if a system fault exists.
Records/preserves the last 2 hours of cockpit sounds and communication,
and all communications through the CA and FO ACP and handsets
Recall the purpose of the IDENT switch on the Audio Control Panel:
Push - Selects voice and coded identification tones of the NAV1/2 or
ADF 1/2 receivers. ON illuminates to indicate selection.
Push again for voice reception without ID tones
Recall how ARINC Communication Addressing and Reporting System
(ACARS) messages are received and transmitted:
ACARS air-to-ground data link communications can be sent or received on
VHF-3 while in the DATA mode.
ACARS is controlled by either MCDU, through data entered either manually
or automatically.
ACARS up-linked messages are displayed on the MCDU screen or printed
on the multi-function printer.