Cold Weather Maintenance - Power Plant

TASK 12-31-71-660-802-A
Cold Weather Maintenance - Power Plant

CAUTION: BEFORE YOU START THE ENGINE OR YOU PRESSURIZE THE HYDRAULIC SYSTEMS, MAKE SURE THAT THERE IS NO ICE OR SNOW ON THE FLIGHT CONTROLS AREA (ELEVATOR, RUDDER AND AILERON). IF YOU DO NOT OBEY THIS PRECAUTION, DAMAGE TO THE FLIGHT CONTROL SYSTEM CAN OCCUR .

CAUTION: INSTALL ENGINE INLET AND EXHAUST PLUG COVERS WHEN AIRCRAFT IS STORED UNDER HEAVY SNOWSTORM CONDITIONS SINCE CONSEQUENTIAL ENGINE INTERNAL DAMAGES MAY OCCUR.

CAUTION: DO NOT SPRAY DEICING FLUID INTO THE ENGINE INLET WITH ENGINES OPERATING. THIS IS TO PREVENT THE POSSIBILITY OF THE PASSAGE OF NOXIOUS FUMES INTO THE AIRPLANE.

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-660-803-A	Prepare the Engine for Cold Weather after Shutdown
TASK 71-00-00-860-826-A	Start the Engine - (Cold Weather)

3. Job Set-up
Subtask 12-31-71-941-051-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 12-31-71-660-053-A ** ON A/C NOT FOR ALL

A. Ice can form in the engine intakes and freeze the fan, therefore you must do a careful examination of the engine inlet and fan before engine start-up.
(1) Prepare the engine before starting in cold weather (Ref. AMM TASK 71-00-00-860-826).
(2) Prepare the engine after shutdown in cold weather (Ref. AMM TASK 71-00-00-660-803).

Subtask 12-31-71-660-054-A ** ON A/C NOT FOR ALL

B. Freezing Points
(1) The oil temperature is also a limitation. For the approved oils and the oil limitation temperatures, refer to the engine manufacturer's data.

[Rev.10 from 2021] 2026.03.31 22:57:51 UTC