ENG FOCBV TM Electrical Failure on Channel A and B

TASK 79-21-00-810-838-A
ENG FOCBV TM Electrical Failure on Channel A and B

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 79-21-00-810-816-A	Engine Fuel/Oil Heat Exchanger (FOHE) Bypass Valve Torque Moteur (TM) Electrical Failure Channel A
TSM TASK 79-21-00-810-817-A	Engine Fuel/Oil Heat Exchanger (FOHE) Bypass Valve Torque Moteur (TM) Electrical Failure Channel B

3. Fault Confirmation
Subtask 79-21-00-710-087-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Fault Isolation
Subtask 79-21-00-810-089-A ** ON A/C NOT FOR ALL

A. Do the two tasks as follows:
(1) Do the troubleshooting procedure (Ref. TSM TASK 79-21-00-810-816).
(2) Do the troubleshooting procedure (Ref. TSM TASK 79-21-00-810-817).

5. Close-up
Subtask 79-21-00-860-077-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.

[Rev.8 from Aug 2018] 2026.04.04 04:38:36 UTC