TM 1-1510-224-MTF
C21.
Landing gear pump motor operating longer than 14 seconds
in the extended mode, but the 2-ampere circuit breaker does
not trip.
Downlock switches failing to open and/or the time delay PCB is faulty.
C22.
Landing gear HYD FLUID LOW light not functioning.
a.
Defective lamp.
b.
Defective fluid indicator circuit.
C23.
Landing gear circuit breaker trips.
Shorted circuit.
C24.
Landing gear warning horn inoperative when LDG GEAR
CONTR 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 retracted.
a.
Poor ground at landing gear control switch.
b.
Defective wiring between LDG GEAR CONTR switch and
landing gear safety switch.
c.
Defective stall/landing gear warning module.
d.
Defective speaker.
C25.
Landing gear warning horn inoperative when POWER lever
is closed and landing gear is up.
a.
Defective or out of adjustment POWER lever switch.
b.
Defective wiring between POWER lever switches and
pedestal terminal board, and between LDG GEAR CONTR
switch and stall/landing gear warning horn module.
c.
Defective “Q” switch.
d.
Defective speaker.
C26.
Landing gear warning horn fails to shut off when landing
gear is extended.
Defective or out of adjustment down-lock switches.
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