Communications

Question 1

What is the function of the BOOM/OXY switch on the Audio Select Panel?

Answer 1

To switch between the Oxygen mask and headset/mictrophone.

Question 2

What would be the result of decreasing the sensitivity too far on the HF Radio?

Answer 2

May prevent reception, including SELCAL monitoring of the HF Radio.

Question 3

How would you use the interphone to communicate with someone in the courier area?

Answer 3

The flight crew must depress the INT transmitter switch on the ACP and push the courier interphone switch on the overhead panel.