Installation of the SFCC
TASK 27-51-34-400-001-A
Installation of the SFCC
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 27-51-34-860-050-A
Subtask 27-51-34-420-050-A
Subtask 27-51-34-410-050-A
[Rev.10 from 2021]
2026.03.31 23:52:40 UTC
Installation of the SFCC
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 |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 127 | REAR AVIONIC COMPARTMENT |
| 128 | REAR AVIONIC COMPARTMENT |
| 824 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 22-97-00-710-001-A | Operational Test of the LAND CAT III Capability |
| TASK 27-51-00-740-002-A | BITE Test of the Slat and Flap Control Computers (Flap System) |
| TASK 27-54-00-710-002-A | Operational Test of the Flap and Slat Systems |
| TASK 27-81-00-740-002-A | BITE Test of the Slat and Flap Control Computers (Slat System) |
| TASK 31-21-00-750-002-A | Procedure to Set the Clock |
Subtask 27-51-34-860-050-A
A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(2) Make sure that the access door 824 is open.
Subtask 27-51-34-865-051-A (1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
(2) Make sure that the access door 824 is open.
B. 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 | |||
| FOR FIN: 21CV (SLAT/FLAP CONTR.COMP.) | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B12 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B07 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 105VU | ELEC/HOT BUS/701PP SPLY | 5PB1 | D01 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 12PB1 | E01 |
| FOR FIN: 22CV (SLAT/FLAP CONTR.COMP.) | |||
| 105VU | ELEC/HOT BUS/702PP SPLY | 5PB2 | D02 |
| 105VU | ELEC/HOT BUS/702PP SPLY | 12PB2 | E02 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P16 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P21 |
Subtask 27-51-34-420-050-A
A. Installation of the SFCC
(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).
(4) Install the SFCC (1) on its rack (3).
(5) Push the SFCC (1) on its rack (3) to connect it to the electrical connectors (2).
(6) Attach the SFCC (1) to its rack (3) with the knurled nuts (4).
Subtask 27-51-34-865-052-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).
(4) Install the SFCC (1) on its rack (3).
(5) Push the SFCC (1) on its rack (3) to connect it to the electrical connectors (2).
(6) Attach the SFCC (1) to its rack (3) with the knurled nuts (4).
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 27-51-34-710-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 21CV (SLAT/FLAP CONTR.COMP.) | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B12 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT FLP/POS/IND 1 | 1CN | B07 |
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 105VU | ELEC/HOT BUS/701PP SPLY | 5PB1 | D01 |
| 105VU | ELEC/HOT BUS/701PP SPLY | 12PB1 | E01 |
| FOR FIN: 22CV (SLAT/FLAP CONTR.COMP.) | |||
| 105VU | ELEC/HOT BUS/702PP SPLY | 5PB2 | D02 |
| 105VU | ELEC/HOT BUS/702PP SPLY | 12PB2 | E02 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P16 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FLIGHT CONTROLS/SLT FLP/2POS/IND | 2CN | P21 |
C. Test
(1) If you install a new SFCC:
5. Close-up(1) If you install a new SFCC:
- After the automatic BITE test, do the operational test of the Flap and Slat Systems (Ref. AMM TASK 27-54-00-710-002).
- Do the BITE test of the SFCC (21CV, 22CV) (Flap System) (Ref. AMM TASK 27-51-00-740-002).
- Do the BITE test of the SFCC (21CV, 22CV) (Slat System) (Ref. AMM TASK 27-81-00-740-002).
- Do the operational test of the Flap and Slat Systems (Ref. AMM TASK 27-54-00-710-002).
NOTE: If you must replace the two SFCCs at the same time, do the LAND CAT III capability test (Ref. AMM TASK 22-97-00-710-001).
NOTE: If necessary, adjust the clock (Ref. AMM TASK 31-21-00-750-002).
Subtask 27-51-34-410-050-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824.
(3) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 824.
(3) Remove the access platform(s).
Slat and Flap Control Computer (SFCC)