ATA 23 Communication Flashcards
What is the frequency range of the HF comm system?
2 to 29.999 MHz
HF transceivers located?
E6-2 shelf (Aft Cargo Compartment)
What is the frequency range of the VHF comm system?
118.000 MHz to 136.990 MHz
Usual use of VHF communications?
for flt crew with VOICE and DATA LINE-OF-SIGHT Communication
can be use for plane-plane and ground stns comm
VHF 3 located?
VHF3 fwd bottom fuselage fwd wing
ELT purpose?
automatically sends signals when it senses a large change in the airplane velocity.
Where is the ELT transmitter located?
access panel in the aft passenger cabin ceiling of STN 794
ELT antenna located?
top of the fuselage aft of the ELT transmitter at STN 797
ELT frequency?
1st transmitter section: 121.5MHz and 243.0MHz
2nd transmitter section:
sends digital data every 50s to 406MHz channel (gives location precision of approx 2km)
ELT control panel located?
P5 top left
What is the purpose of the ACARS?
‘Aircraft Communications Addressing and Reporting System’
transmits messages and reports between an airplane and and airline ground base.
List the Passenger Address (P.A.) system input priorities.
P1 - announcement from the flight compartment
P2 - Attendant
P3 - pre-recorded announcement
P4 - boarding music
Where is the service interphone amplifier located?
flight compartment speakers and headsets
Service Interphone headsets
Attendant handsets
The ____ ______ _______ connects/disconnects microphone inputs from the external service interphone jacks.
service interphone switch
Where is the GND CALL button located?
passenger signs on the p5 fwd overhead panel
