RCDR panel

Question 1

Why is the GND CTL pushbutton selected to ON during preflight?

Answer 1

to record preflight activities in the cockpit

Question 2

If the pushbutton was not selected ON, how would the system work in automatic mode?

Answer 2

• on for 5 minutes after electrical power is supplied to the aircraft
• at least on engine is operating, stops 5 min after last engine shut down

Question 3

What allows the cabin PAs to be recorded

Answer 3

ACP 3 PA volume know out and in the 12 o’clock position