Communications

Question 1

Is the PA system available on battery power?

Answer 1

Yes! Powered on Battery Bus

Question 2

Where are the audio systems for the flight deck located?

Answer 2

Physical radios are located in the E&E compartment

Question 3

What is the purpose of the ALT-NORM switch on the ACP?

Answer 3

Allows use of radio in the event of a malfunction
Hardwires ACP1 to VHF1 and ACP2 to VHF2, ACP3 to VHF1
NORM-ACP = operating normally ALT-ACP = operates in degraded mode (if you’re both in alternate, you will not get any aural callouts (GPWS, etc))

Question 4

The Push-To-Talk switch, when toggled, transmits on which transmitter?

Answer 4

Whatever is selected

Question 5

What does the Service Interphone switch do?

Answer 5

Connect external headset jacks on the airplane (on the aft overhead panel)

Question 6

What does the VHF TEST switch do?

Answer 6

Removes Auto squelch feature - allowing background noise and potentially aiding reception of weak signals

Question 7

What is the indication of tuning the offside Radio Tuning Panel (RTP)?

Answer 7

Offside Tuning (White) Light = indicates radio usually associated with that panel is being tuned by another RTP or vice versa

Question 8

What failure messages display on the RTPs, and what do they mean?

Answer 8

FAIL/FAIL = the selected radio has failed

PANEL/ FAIL = panel has failed

Question 9

What considerations should be made before keying the HF radio on the ground?

Answer 9

Do not key the HF Radio while the aircraft is being fueled/defueled. Injury to personnel or fire may result. Aft service doors should be closed.

Question 10

What is the priority of source selection in the data mode?

Answer 10

VHF

• –> SAT PHONE
• ——-> HF

Question 11

What is the notification of an incoming SAT phone call?

Answer 11

Aural chime - select ANSWER on SAT menu on CDU

Question 12

How is communication established using the oxygen mask?

Answer 12

Select MASK and SPKR on ACP (mask will activate speaker)

Question 13

How can the flight deck alert the ground crew?

Answer 13

GRD CALL switch (overhead panel) sounds horn in nose wheel well.

Question 14

How can a PA be made? Which ACP, hand mic, or interphone has priority?

Answer 14

Can use PA handset or standard microphone and related ACP (boom, oxymask, handheld mic) Flight Deck has highest priority overall - hand mic overrides ACP within the flight deck

Question 15

What does the ATTEND button do?

Answer 15

Two tone chime (bing bong!) in the pax cabin and illuminates both pink master call lights.

Question 16

What does a SELCAL reset button do and when is it used?

Answer 16

Extinguishes and resets the SELCAL light, used after a call RESET otherwise you cannot use it or receive another SELCAL