Communications Flashcards Preview

United 737 > Communications > Flashcards

Flashcards in Communications Deck (32)
Loading flashcards...
1
Q

The CVR records audio from the flight deck area for _____ minutes.

A

120

2
Q

How many transmitter selector switches can be active at any one time?

A

1

3
Q

What does the ALT position for the ACP mean?

A

Operation is now in degraded mode.

4
Q

What are the positions of the filter switch and what do they do?

A

V (voice): recieve NAV and ADF voice audio
B (both): recieve NAV and ADF voice and range audio
R (range): recieve NAV and ADF station identifier range (code) audio

5
Q

Where are HF antennas located?

A

vertical stabilizer

6
Q

Where are VHF antennas located?

A

VHF 1: upper fuselage

VHF 2 & VHF 3: lower fueselage

7
Q

What is the purpose of the HF sensitivity contorl?

A

change the sensitivity of the on-side HF reciever

8
Q

When is the Offside Tuning Light illuminated?

A

radio associated with it is being tuned by another RTP
or
RTP is used to tune a radio not normally associated with it.

9
Q

What does the VHF TEST switch do?

A

removes the automatic squelch feature. Can also be used for the reception of weak signals.

10
Q

What does the AM switch do?

A

toggles between AM and USB (upper side band) modes. Light illuminates when AM is selected.

11
Q

T/F: Freqs may still be displayed when there is a radio not available.

A

True

12
Q

When is the Flight Deck Area Microphone active?

A

as soon as an engine is started or when CVR switch is turned on

13
Q

When/where does the ERASE switch work for the CVR?

A

Only on ground and parking brake set. Push for 2 seconds to eras all 3 record channels.

14
Q

How does a pilot utilize the interphone?

A

Use the PTT switch on the control column.

15
Q

The service (Attendant) Interphone system does what?

A

allows flight deck, FA and ground personnel intercomm

16
Q

What is the priority of the announcements?

A

Flight crew
FA
Passenger calls
Recorded music

17
Q

What is the purpose of the Call system?

A

to advise other members of the crew that interphone comm is desired.

18
Q

Calls can be initiated from where?

A

Flight deck, FA stations, external power receptacle.

19
Q

What is the purpose of the Ground Call Switch?

A

flt crew wishes to call the ground crew

20
Q

What does pushing the ATTEND (attend call switch) do?

A

Initiates a 2 tone chime in passenger cabin and illuminates both pink master call lights.

21
Q

When does the Flight Deck CALL light illuminate?

A

FA or ground crew is calling the flight deck.

22
Q

What does the RESET button on the attendant handset do?

A

extinguishes both pink master call lights, cancels the call and disconnects the handset from the PA system.

23
Q

What do the master call lights mean in the cabin?

A

Pink: flight deck or other FA station is calling
Blue: passenger seat call
Amber: Lav call switch is pressed.

24
Q

What happens in ACP degraded mode/

A

the ACP at that station is inop and only one radio is available for comm.

25
Q

What is radio availablity in Degraded mode?

A

CA: VHF 1
FO: VH2
Observer: VHF 1

26
Q

What can you use in degraded mode for the ACP?

A

receiver switches don’t work and only associated radio is heard at preset volume.
Speak and speaker switch don’t work.
Flight and service interphones cannot be used.

27
Q

When an audio system is in degraded mode, audio warnings for _____, _____, and _______ are not heard on that system.

A

altitude alert, GPWS, windshear.

28
Q

In degraded mode, can you use the PA system through the ACP?

A

NO but service interphone handset on pedistal and PA microphone can be used.

29
Q

Primary comm on the ground should use VHF ___ on the ground due to possible interference related to lower fuselage anttena locations.

A

1

30
Q

What does the Radio Tuning Panel OFF switch do?

A

disconnect radio from the comm radios.

31
Q

HF sensitivity can only be set from the _______ HF receiver.

A

on-side.

32
Q

The service interphone switch does what?

A

connects mx or service personnel to the intercom system.