DOC AIRBUS | TSM A320FLoss of SFCC 1 (2) Because of an A/C Pin Program Fault
TASK 27-51-00-810-807-A
Loss of SFCC 1 (2) Because of an A/C Pin Program Fault
1. Possible Causes
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Fault Confirmation
Subtask 27-51-00-710-056-A
Subtask 27-51-00-810-056-A
Subtask 27-51-00-942-056-A
[Rev.8 from Aug 2018]
2026.04.04 04:27:37 UTC
Loss of SFCC 1 (2) Because of an A/C Pin Program Fault
1. Possible Causes
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | BREAK-OUT BOX (ARINC 600 TYPE) |
| REFERENCE | DESIGNATION |
|---|---|
| AMM 27-51-00-740-002 | BITE Test of the Slat and Flap Control Computers (Flap System) |
| ASM 275108 | |
| AMM 27-51-34-000-001 | Removal of the SFCC |
| AMM 27-51-34-400-001 | Installation of the SFCC |
| AMM 27-54-00-710-001 | Operational Test of the Flap System |
Subtask 27-51-00-710-056-A
A. Test
(1) Do a Bite Test of the applicable SFCC/flap system AMM 27-51-00-740-002.
(2) If the test gives a message that includes PIN PROGRAM DISAGREE, do the fault isolation.
4. Fault Isolation(1) Do a Bite Test of the applicable SFCC/flap system AMM 27-51-00-740-002.
(2) If the test gives a message that includes PIN PROGRAM DISAGREE, do the fault isolation.
Subtask 27-51-00-810-056-A
A. Procedure
(1) Interchange SFCC 1 and SFCC 2 AMM 27-51-34-000-001 and AMM 27-51-34-400-001.
(a) Do the test which is given in Para. 3. A.
(b) If the fault does not move to the other SFCC:
1 Install the serviceable SFCC to its initial position.
2 Replace the unserviceable SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] .
3 Do the test which is given in Para. 3. A.
(2) If the fault continues:
(a) Use the BREAK-OUT BOX (ARINC 600 TYPE) and do a check of the applicableA/C wiring at the ARINC tray interface ASM 275108.
(b) Repair the wiring/interface.
(c) Do the test in Para. 3. A.
(3) Do the operational test of the flaps system AMM 27-54-00-710-001.
(a) Get access to the FLP ON GROUND FAULTS page and make sure that there show no faults.
5. Close-up(1) Interchange SFCC 1 and SFCC 2 AMM 27-51-34-000-001 and AMM 27-51-34-400-001.
(a) Do the test which is given in Para. 3. A.
(b) If the fault does not move to the other SFCC:
- Install the SFCCs in their initial positions.
1 Install the serviceable SFCC to its initial position.
2 Replace the unserviceable SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] .
3 Do the test which is given in Para. 3. A.
(2) If the fault continues:
(a) Use the BREAK-OUT BOX (ARINC 600 TYPE) and do a check of the applicable
(b) Repair the wiring/interface.
(c) Do the test in Para. 3. A.
(3) Do the operational test of the flaps system AMM 27-54-00-710-001.
(a) Get access to the FLP ON GROUND FAULTS page and make sure that there show no faults.
Subtask 27-51-00-942-056-A
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 27-51-00-860-056-A B. Put the aircraft back to its initial configuration.