Audio Control Panel (ACP)

Question 1

Top Row buttons - Lines (Green)

Answer 1

On when respective channel is selected for transmission

Question 2

CALL Light - (Amber)

Answer 2

SEL CAL (Buzzer sounds)

Question 3

INT MECH light - Amber

Answer 3

Call from the nose gear (Buzzer sounds)

Automatically extinguishes 60 seconds if not reset before

Question 4

CAB ATT light - Amber

Answer 4

Call from the cabin attendant (Buzzer sounds)

Automatically extinguishes 60 seconds if not reset before

Question 5

Top Row & Bottom Row Knobs - Released and turned

Answer 5

Controls volume when knob is out (released)

Question 6

INT/RAD switch - INT

Answer 6

Boom & Mask mikes transmit on interphone

Question 7

INT/RAD switch - Neutral

Answer 7

Boom & Mask do not transmit

Question 8

INT/RAD switch - RAD

Answer 8

Boom & Mask mikes transmit on radio selected on ACP

Question 9

ON VOICE button - Pushed

Answer 9

On light (green) illuminates
Ident signals are filtered out (VOR & ADF)

Question 10

RESET Button - Pushed

Answer 10

Extinguishes CALL, MECH & ATT lights on top row

Question 11

PA - Button Pushed

Answer 11

Lines (Green) illuminate
Boom, Mike or Hand mike transmits over PA system
Push and Hold

Question 12

PA - Knob

Answer 12

Integral white light illuminates