Pilot's Auxiliary Flight Panel

Question 1

HTR OFF light on (AOA Panel)

Answer 1

Angle of attack probe heater has failed

Check circuit breaker. If normal, avoid icing conditions. If unavoidable, pull appropriate AOA computer circuit breaker and monitor other systems. Full stall barrier protection is provided by alternate operative system.

Question 2

FAIL (red) light on (AOA System)

Answer 2

No power to respective stall barrier system.

Check appropriate AOA computer circuit breaker. Reset if necessary. Full stall barrier system protection is provided by alternate operative system.

If both fail lights on. Check stall barrier switch on. If both lights remain on, no stall barrier protection is available.