C17. Landing gear operation noisy.
a. Loose chain.
b. Broken gear door linkage.
c. Worn actuator bearings.
C18. Landing gear warning horn inoperative.
a. Defective silence switch.
b. Defective warning horn.
c. Defective warning horn flasher.
d. Power lever switch out of adjustment.
e. Defective horn deactivate relay.
Defective landing gear control switch.
g. Defective safety switch.
h. Defective wiring.
C19. Landing gear warning horn inoperative when landing gear
control switch is in the up position and weight of aircraft is on
struts, but operates when a power lever is closed and the gear is
Poor ground at landing gear control switch.
b. Defective wiring between landing gear control switch, fire
warning horn relay, and landing gear safety switch.
C20. Landing gear warning horn inoperative when power lever is
closed and landing gear is up.
a. Defective or out of adjustment power lever switch.