TM 55-1510-215-MTF
b.
Defective wiring between power lever switches and terminal 2
of pedestal terminal board (TB100) and between landing gear
control switch and horn deactivate relay.
C21. Landing gear warning horn fails to shut off when landing
gear is lowered.
a.
Defective or out of adjustment down lock switches.
C22. Landing gear silencer button fails to silence warning horn.
a.
Flap switch not in up position.
b.
Defective silencer switch.
c.
Defective horn deactive relay.
d.
Defective flap control switch.
e.
Defective wiring.
C23. Landing gear down position indicator lights are illuminated
with landing gear retracted.
a.
Defective or out of adjustment down lock switch.
b.
Wrong connection in light test circuit.
c.
Ground between light and down lock switch.
C24. Landing gear down position indicator light inoperative.
a.
Defective or out of adjustment down lock switch.
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