TM 1-1510-224-MTF
C53.
Ventilation blower has excessive vibration.
a.
Armature out of balance.
b.
Fan damaged.
c.
Fan out of balance.
d.
Defective bearings.
C54.
Propeller deice inoperative.
a.
Circuit breaker tripped.
b.
Propeller deice switch defective.
c.
Ammeter defective.
d.
Defective propeller deice timer.
C55.
Stall warning deice inoperative.
a.
STALL WARN circuit breaker tripped.
b.
STALL WARN circuit breaker defective.
c.
STALL WARN deice switch defective.
d.
Staff warning deice heating element defective.
C56.
Left or right fuel vent deice inoperative.
a.
FUEL VENT HEAT circuit breaker tripped.
b.
FUEL VENT HEAT circuit breaker defective.
c.
FUEL VENT deice switch defective.
d.
Fuel vent deice heating element defective.
TROUBLESHOOTING GUIDE D - CAUTION PANEL
CONDITION
PROBABLE CAUSE
D1.
Placard light (annunciator panel) will not illuminate when
press-to-test button is pressed.
a.
Defective placard light.
b.
Defective lamps.
c.
Defective fault detection module.
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