Deactivation of FAC2

TASK 22-66-00-040-001-A
Deactivation of FAC2

ZONE: 210
FIN: 1CC2

1. Reason for the Job
MMEL 22-66-01
FLIGHT AUGMENTATION COMPUTER (FAC) 2 (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
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 22-66-00-861-050-A

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 22-66-00-865-050-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19

4. Procedure
Subtask 22-66-00-040-050-A

A. Deactivation of FAC2
(1) On overhead panel 24VU, release the FLT CTL/FAC 2 pushbutton switch (the OFF legend comes on).
(2) Open and safety tag circuit breaker 5CC2 (ignore the related warnings).

5. Close-up
Subtask 22-66-00-942-050-A

A. Safety Precautions
(1) Put a WARNING NOTICE(S) on the FLT CTL/FAC2 pushbutton switch, to tell the crew that FAC2 is deactivated.
(2) Make an entry in the logbook.

Subtask 22-66-00-862-050-A

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

[Rev.10 from 2021] 2026.03.31 23:10:31 UTC