TM 1-1510-225-CL
E-19
UNSCHEDULED ELECTRIC ELEVATOR TRIM
1. Control wheel disconnect switch – Press fully.
O
2. Elevator trim switch – OFF.
3. AP TRIM POWER circuit breaker – Out.
ELECTROTHERMAL PROPELLER DEICE
(AUTO SYSTEM) MALFUNCTION
ZERO AMPS:
1. PROP deice switch – Check AUTO.
IF AMPS REMAIN AT ZERO:
2. PROP deice switch – OFF (for 30 seconds).
3. PROP deice switch – AUTO.
IF AMPS REMAIN AT ZERO:
4. Manual
backup
system
– Initiate. (See
electrothermal propeller Deice Manual System
Operation.)
BELOW 18 AMPS:
5. Operation – Continue.
6. RPM – Increase (briefly to aid in ice removal, if
propeller imbalance occurs).
OVER 24 AMPS
7. Monitor – Continue operation if the PROP deice
circuit breaker switch does not trip.
8. RPM – Increase (briefly to aid in ice removal, if
propeller imbalance occurs).
9. Loadmeter – Monitor for excessive current drain.
If the PROP AUTO deice circuit breaker switch
trips, use the manual system.
