Engine Shutdown [CFMB]

TASK 71-00-00-710-028-B
Engine Shutdown

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

REFERENCE	DESIGNATION
TASK 10-11-00-555-013-A	Installation of the Aircraft Protection Equipment
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 71-00-00-869-189-A ** ON A/C NOT FOR ALL

A. Not applicable

4. Procedure
Subtask 71-00-00-710-136-A ** ON A/C NOT FOR ALL

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 3 minutes before shutdown to thermally stabilize the engine hot section.

NOTE: You can use taxi time at or near idle as part of the 3 minutes cool down time.

(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 shutdown to confirm 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 shutdown, do a dry motoring until the fire is extinguished.

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

(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 protective covers removed at engine start on the probes (Ref. AMM TASK 10-11-00-555-013).

NOTE: Do not install the probes cover immediately after then engine shutdown.

Subtask 71-00-00-862-084-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 02:24:47 UTC