Which statement best describes the APU DOOR light status in flight?

Which statement best describes the APU DOOR light status in flight?

• A. APU door not in flight position
• B. APU door not in ground position
• C. APU door is open
• D. APU door is closed

Answer: (A)

The APU door light tells you whether the APU door is in its proper position for flight. In flight, the APU isn’t being used, and the door must be kept in the position appropriate for flight. The indicator is described in terms of whether the door is in that flight position; therefore the best description of the light in flight is that the APU door is not in flight position. The other options refer to specific states (open/closed) or ground positioning, which aren’t the way this light is described in flight.

The APU door light tells you whether the APU door is in its proper position for flight. In flight, the APU isn’t being used, and the door must be kept in the position appropriate for flight. The indicator is described in terms of whether the door is in that flight position; therefore the best description of the light in flight is that the APU door is not in flight position. The other options refer to specific states (open/closed) or ground positioning, which aren’t the way this light is described in flight.