EMERGENCY PROCEDURES
1. Loss of Alternator
a. Propeller Deice Switch - Off
2. Abnormal Reading on Propeller Deice Ammeter
a. Zero Amps
Check propeller deice switch. If the circuit breaker in
the switch has tripped, a wait of approximately 30
seconds is necessary before resetting the switch to
the ON position. If ammeter reads O and switch has
not tripped or if ammeter still reads O after the switch
has been reset, turn the switch off and consider the
propeller deice system inoperative.
b. Zero to 20 Amps (2 Blade)
Zero to 30 Amps (3 Blade)
If propeller deice system ammeter occasionally or
regularly indicates less than 20 amps (2 blade), 30
amps (3 blade), operation of the propeller deice
system can continue unless serious propeller imbal-
ance results from irregular ice throw-offs.
c. More than 24 Amps (2 Blade)
More than 34 Amps (3 Blade)
If the propP!ler deice system ammeter occasionally
or rel:Jularly indicates more than 24 amps (2 blade),
34 amps (3 blade), the system should not be oper-
ated unless the need for propeller deice is urgent.
FAA Approved
Revised: November, 19n
PIN 35-590118-25
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