737 Communications

Question 1

Describe cockpit indications of incoming cabin or ground call.

Answer 1

Blue CALL light illuminates.

Question 2

Explain meaning of illuminated Offside Tuning Light on the Radio Tuning Panel

Answer 2

The radio normally associated with this panel is being tuned by another radio tuning panel - or -

The radio tuning panel is being used to tune a radio not normally associated with this radio tuning panel

Question 3

Explain how to activate and deactivate the Oxygen Mask Microphone.

Answer 3

The oxygen mask microphone is enabled when the oxygen mask panel door is open. It is disabled when the mask panel door is closed and the TEST/RESET switch is pushed

Question 4

Describe the Flight Interphone, Service Interphone and Passenger Address Systems

Answer 4

Flight inter phone - provides private communication between flight deck crew members without intrusion from the service interphone system.

Service Interphone - communication between flight deck, flight attendants and ground personnel

Pass address system - allows flight deck and flight attendants to make announcements to pax.

Question 5

Describe operation of audio control panel

Answer 5

4 parts
1. Transmitter selector (MIC SELECTOR)
2. SELCAL Light - this is a “C” in the bottom of the Transmitter selector accompanied by a chime
3. Receiver Switches
4. Alternate - Normal (ALT-NORM) Switch
- NORM - ACP operates normally
- ALT - ACP operates in degraded mode - can’t use hand mic

Question 6

Describe Degraded Audio System Operation

Answer 6

Switch ALT/NORM switch to ALT - in this mode the AP at that station is inoperative and the crew member can only communicate on one radio. - first officer is VHF 2 only

Hand held mic no longer works and pax address system no longer works

Question 7

Which VHF radio antenna is on top of the aircraft?

Answer 7

VHF 1