7ER Communications

Question 1

What are the indications of an incoming cabin call or ground call?

Answer 1

A chime

A blue CABIN CALL (FWD, MID, or AFT) or GND CALL light on the overhead panel

Question 2

What does pushing a MIC SELECTOR button on the Audio Control Panel do?

Answer 2

Selects the associated transmitter, and illuminates the button’s internal light

Deselects any previously selected button and extinguishes its light

Selects the associated receiver on regardless of switch position

Question 3

What does pushing a receiver button on the Audio Control Panel do?

Answer 3

Selects the associated receiver on for listening. The knob can be rotated to adjust volume

Question 4

Describe the function of the BOOM/OXY switch

Answer 4

BOOM - the headset microphone is used for communication

OXY - the oxygen mask microphone is used for communication

Question 5

Describe the function of the FLT/CABIN switch

Answer 5

FLT - the flight interphone system is selected

CABIN - the cabin interphone is selected