Engine Shutdown [CFML]

TASK 71-00-00-860-829-A
Engine Shutdown

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: DO NOT TRY TO STOP THE FAN FROM TURNING BY HAND. THIS CAN CAUSE INJURY TO THE PERSONS AND DAMAGE TO THE EQUIPMENT.

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

REFERENCE	DESIGNATION
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)

3. Job Set-up
Subtask 71-00-00-869-369-A

A. Not Applicable

4. Procedure
Subtask 71-00-00-710-254-A

A. Stop the engine.

CAUTION: MAKE SURE THAT THE ENG/MASTER 1(2) CONTROL SWITCH IS FULLY ENGAGED IN THE OFF DETENT AFTER SHUTDOWN.

(1) Before you stop the engine, operate it at or near idle for three minutes before the shutdown to thermally stabilize the engine hot section.

NOTE: You can use taxi time at or near idle as part of the three minutes cool-down time.

NOTE: Following high-thrust static ground operation, such as a maximum power assurance check or vibration survey, operate at idle thrust for a period of no less than ten minutes to thermally stabilize the engine and reduce undercowl soak-back temperatures prior to shutdown.

NOTE: The above guidance does not apply in those cases where an approved abnormal or emergency procedure specifies immediate shutdown.

(2) Put the throttle control lever in the idle position.
(3) Set the ENG/MASTER 1(2) control switch to OFF.
(4) Monitor the EGT, N2 and fuel flow during the shutdown to confirm the fuel shutoff.

CAUTION: BE PREPARED TO DRY MOTOR THE ENGINE WITH THE STARTER IF THERE IS A POST-SHUTDOWN FIRE INDICATION. ENGINE DAMAGE CAN BE CAUSED.

(a) Make sure that the EGT and N2 rpm decrease when the fuel is shut off. If a steady decrease in the EGT does not occur after the shutdown, do a dry-motoring until the fire is extinguished.

NOTE: After the engine shutdown is completed, and the rotation is fully stopped, the EGT will normally slowly increase. This is caused by a normal temperature soak-back.

NOTE: After the engine shutdown is completed, oil pressure indication can show a residual pressure. The residual oil pressure limit is +/- 7 PSI (+/- 48 kPa).

(5) On the HYD/FUEL panel 40VU:
(a) Release all the FUEL/PUMPS pushbutton switches (the OFF legends of these pushbutton switches come on).
(6) On the overhead control and indicating panel 25VU:
(a) Set the EXT LT/BEACON switch to OFF.
(7) If necessary, install the covers that you removed at engine start on the TAT, AOA and PITOT probes.

NOTE: Do not install the probe covers immediately after the engine shutdown.

Subtask 71-00-00-862-102-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 05:43:23 UTC