Installation of the Flight Augmentation Computer (FAC)

TASK 22-66-34-400-002-A
Installation of the Flight Augmentation Computer (FAC)

ZONE: 127
ZONE: 128
ZONE: 210
FIN: 1CC1
FIN: 1CC2

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
127	REAR AVIONIC COMPARTMENT
128	REAR AVIONIC COMPARTMENT
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
824

C. Referenced Information

REFERENCE	DESIGNATION
TASK 22-62-00-710-001-A	Operational Test of the Rudder Trim Function
TASK 22-66-00-610-802-A	Uploading of the Flight Augmentation Computer (FAC) Software
TASK 22-96-00-710-001-A	Operational Test of the AFS
TASK 22-97-00-710-001-A	Operational Test of the LAND CAT III Capability
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)
TASK 31-32-00-860-001-A	Procedure to Get Access to the SYSTEM REPORT/TEST Menu Page
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
Flight Augmentation computer (FAC)

3. Job Set-up
Subtask 22-66-34-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at access door 824 in zone 128.
(3) Make sure that access door 824 is open (Ref. AMM TASK 52-41-00-010-002).

Subtask 22-66-34-865-054-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1CC1 (FAC1)
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** ON A/C ALL
FOR FIN: 1CC2 (FAC2)
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18

4. Procedure
Subtask 22-66-34-420-052-A ** ON A/C NOT FOR ALL

A. Installation of the FAC

NOTE: The procedure is the same for FACs 1CC1 and 1CC2.

(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking caps from the electrical connectors (1).
(4) Make sure that the electrical connectors (1) are in the correct condition.
(5) Install the FAC (5) on its rack (2).
(6) Push the FAC (5) on its rack (2) to connect the electrical connectors (1).

CAUTION: MAKE SURE THAT THE OBRM(S) IS (ARE) CORRECTLY INSTALLED. IF IT (THEY) IS(ARE) NOT INSTALLED CORRECTLY, PUSH THE OBRM(S) UNTIL THE LOCKING DEVICES ARE LOCKED.

(7) Engage the nuts (3) on the studs (4) and tighten them.

Subtask 22-66-34-420-052-B ** ON A/C NOT FOR ALL

A. Installation of the FAC

NOTE: The procedure is the same for FACs 1CC1 and 1CC2.

Subtask 22-66-34-865-055-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1CC1 (FAC1)
49VU	AUTO FLT/FAC1/28VDC	5CC1	B04
49VU	AUTO FLT/FAC1/26VAC	14CC1	B03
** ON A/C NOT FOR ALL
49VU	AUTO FLT/FAC1/28VDC	5CC1	H10
49VU	AUTO FLT/FAC1/26VAC	14CC1	H09
** ON A/C ALL
FOR FIN: 1CC2 (FAC2)
121VU	AUTO FLT/FAC2/28VDC	5CC2	M19
121VU	AUTO FLT/FAC2/26VAC	14CC2	M18

Subtask 22-66-34-280-050-A ** ON A/C NOT FOR ALL

C. Check of the Part Number(s) (P/N) of the Software Component(s) Uploaded to the FAC
(1) Get access to the "SYSTEM REPORT/TEST" menu page (Ref. AMM TASK 31-32-00-860-001).

ACTION	RESULT
1.Push the line select key adjacent to the "AFS" indication.	The "AFS MAIN MENU" page comes into view.
2.Push the line select key adjacent to the "LRU IDENTIFICATION" indication.	The "LRU IDENTIFICATION" page comes into view.

(2) Make sure that the P/N(s) of the FAC shown on the "LRU IDENTIFICATION" page is(are) the same as the P/N(s) written on the media.
(a) If the P/N(s) of the FAC shown on the "LRU IDENTIFICATION" page is different from the P/N(s) written on the media, replace the FAC.
(b) If the two FACs are not uploaded with the same software, make sure that the configuration of FAC1 or FAC2 is permitted.

Subtask 22-66-34-280-050-B ** ON A/C NOT FOR ALL

C. Do the uploading of the FAC operational software-component (Ref. AMM TASK 22-66-00-610-802).

Subtask 22-66-34-710-052-A ** ON A/C NOT FOR ALL

D. Do the operational test of the Automatic Flight System (AFS) (Ref. AMM TASK 22-96-00-710-001).

NOTE: If the aircraft is operated in the CAT 3 condition, it is also necessary to do the LAND CAT 3 capability test (Ref. AMM TASK 22-97-00-710-001).

NOTE: If you remove the FAC after the "AFS: YD ACTR 3CC1(2)" Centralized Fault Display System (CFDS) indication comes into view, it is necessary to do the test with the hydraulic pressure available (Green for FAC1 or Yellow for FAC2).

NOTE: As an alternative procedure, you can do this operational test without the CFDS (Ref. AMM TASK 22-62-00-710-001).

Subtask 22-66-34-710-052-C ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT THE SOFTWARE INSTALLED AGREES WITH THE AIRLINE CONFIGURATION MANAGEMENT DOCUMENT. THE SYSTEM OPERATIONAL TEST OR BITE TEST DOES NOT DETECT INCORRECT SOFTWARE CONFIGURATION.

D. Do the operational test of the Automatic Flight System (AFS) (Ref. AMM TASK 22-96-00-710-001).

NOTE: If the aircraft is operated in the CAT 3 condition, it is also necessary to do the LAND CAT 3 capability test (Ref. AMM TASK 22-97-00-710-001).

NOTE: As an alternative procedure, you can do this operational test without the CFDS (Ref. AMM TASK 22-62-00-710-001).

5. Close-up
Subtask 22-66-34-410-052-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close access door 824 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

Subtask 22-66-34-860-055-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) If there is(are) media in the storage box, remove it(them). Then put the new media in the storage box.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 22-66-34-860-055-B ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) On the MCDU, push the line select key adjacent to the RETURN indication until the CFDS menu page comes into view.
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:10:34 UTC