TM 55-1510-215-MTF
C40. Pneumatic surface deicer system inoperative.
a.
Defective surface deicer control relay.
C41. Annunciator panel right and left fire warning lights do not
illuminate and warning horn does not sound in any test position
of fire warning test switch.
a.
Cowling not closed tightly or light deflector plates not in place.
b.
Tripped fire detector circuit breaker.
c.
Defective fire detection test switch.
d.
Defective wiring.
C42. Engine fire detection system wholly or partially inoperative.
a.
Defective flame detector.
b.
Defective fire detection test switch.
c.
Defective fire warning horn relay.
C43. Fire detector circuit breaker trips.
a.
Short circuit in wiring or components.
C44. Fire warning horn will not sound.
a.
Defective warning horn.
C45. Annunciator panel left fire warning light illuminates in all test
positions but right fire warning light does not.
a.
Defective right fire detection control amplifier.
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