DOC AIRBUS | AMM A320FInstallation of the Flight Control Unit (FCU)
TASK 22-81-12-400-001-A
Installation of the Flight Control Unit (FCU)
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 22-81-12-865-053-A
Subtask 22-81-12-420-052-A
Subtask 22-81-12-860-050-A
[Rev.10 from 2021]
2026.03.31 23:11:06 UTC
Installation of the Flight Control Unit (FCU)
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 22-10-00-710-004-A | Operational Test of the FCU Lighting |
| TASK 22-10-00-710-006-A | Operational Test of the FCU |
| 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 |
FCUSubtask 22-81-12-865-053-A
A. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | B05 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | H11 |
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/FCU/2 | 9CA2 | M21 |
| 122VU | LIGHTING/INSTL LT/GLARE/SHLD | 5LF | Y05 |
Subtask 22-81-12-420-052-A
A. Installation of the FCU
(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 (2) and (7).
(4) Make sure that the electrical connectors (2) and (7) are in the correct condition.
(5) Connect the electrical connectors (2) and (7).
(6) Install the FCU (1) in its housing (8).
(7) Install the four screws (3) and the washers (4).
(8) Close and hold the lower panel (6).
(9) Tighten the three Dzus fasteners (5) a quarter turn.
Subtask 22-81-12-865-054-A (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 (2) and (7).
(4) Make sure that the electrical connectors (2) and (7) are in the correct condition.
(5) Connect the electrical connectors (2) and (7).
(6) Install the FCU (1) in its housing (8).
(7) Install the four screws (3) and the washers (4).
(8) Close and hold the lower panel (6).
(9) Tighten the three Dzus fasteners (5) a quarter turn.
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 22-81-12-710-052-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | B05 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | AUTO FLT/FCU/1 | 9CA1 | H11 |
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/FCU/2 | 9CA2 | M21 |
| 122VU | LIGHTING/INSTL LT/GLARE/SHLD | 5LF | Y05 |
C. Test
(1) Do the operational test of the Automatic Flight System (AFS) (Ref. AMM TASK 22-96-00-710-001).
5. Close-up(1) Do the operational test of the Automatic Flight System (AFS) (Ref. AMM TASK 22-96-00-710-001).
NOTE: You can also do these optional operational tests (Ref. AMM TASK 22-10-00-710-004) and (Ref. AMM TASK 22-10-00-710-006).
(2) Do the LAND CAT 3 capability test if the aircraft operates in the CAT 3 condition (Ref. AMM TASK 22-97-00-710-001). Subtask 22-81-12-860-050-A
A. Make sure that the work area is clean and clear of tools and other items.