What is the general function of a stall warning system?

• A. To alert the pilot that the aircraft is approaching a stall by sensing high angle of attack and/or low airspeed.
• B. To warn about engine fire.
• C. To monitor cabin pressure.
• D. To automatically adjust pitch.

Answer: (A)

The function of a stall warning system is to alert you that the wings are approaching a stall by detecting conditions that precede a loss of lift—usually an increasing angle of attack or decreasing airspeed. It uses sensors on the wing or aircraft to sense angle of attack or low dynamic pressure and sounds a warning (or lights up) before the stall actually occurs. This early alert gives you time to lower the nose or apply power to restore airflow over the wings and maintain controlled flight. The other options describe different systems: engine fire warning, cabin pressure monitoring, or automatic pitch adjustment, none of which pertain to warning about an imminent stall.