Warning Systems

Question 1

The Takeoff configuration warning horn will sound on the ground when:

Answer 1

As thrust levers are advanced…

1. Spoilers are not down
2. Parking brake is set
3. Stab Trim is not takeoff range (green band)
4. Speed Brake lever is not in the DOWN position
5. Leading edge devices are not configured for takeoff
6. Trailing edge flaps are not in the takeoff range (1-25)

Question 2

The proximity switch electronic unit (PSEU) monitors:

Answer 2

Air/Ground sensing, Landing gear position, T/O configuration, Landing configuration