DOC AIRBUS | TSM A320FSFCC 1 (2) OR FLP PPU POWER SFCC Generated FLAP PPU Power Fault
TASK 27-51-00-810-812-A
SFCC 1 (2) OR FLP PPU POWER SFCC Generated FLAP PPU Power Fault
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 27-51-00-740-052-A
Subtask 27-51-00-810-061-A
Subtask 27-51-00-942-061-A
[Rev.8 from Aug 2018]
2026.04.04 04:27:37 UTC
SFCC 1 (2) OR FLP PPU POWER SFCC Generated FLAP PPU Power Fault
1. Possible Causes
A/C wiring/interface between SFCC 1 (2) and the PPUs'. - SLAT/FLAP CONTR.COMP. [21CV]
- SLAT/FLAP CONTR.COMP. [22CV]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 27-51-00-740-002 | BITE Test of the Slat and Flap Control Computers (Flap System) |
| ASM 275106 | |
| ASM 275107 | |
| AMM 27-51-34-000-001 | Removal of the SFCC |
| AMM 27-51-34-400-001 | Installation of the SFCC |
Subtask 27-51-00-740-052-A
A. SFCC system exitation power test.
(1) Do the SYSTEM TEST (BITE) on the SFCC 1 (2) AMM 27-51-00-740-002. The fault data" PPU excitation power short circuit" is displayed. Page block 301 table 7 gives the SFCC test menu selections details.
(2) Do the fault isolation.
4. Fault Isolation(1) Do the SYSTEM TEST (BITE) on the SFCC 1 (2) AMM 27-51-00-740-002. The fault data" PPU excitation power short circuit" is displayed. Page block 301 table 7 gives the SFCC test menu selections details.
(2) Do the fault isolation.
Subtask 27-51-00-810-061-A
A. Procedure
(1) Make sure that there is no SFCC to PPU external circuit/interface short circuit fault, before troubleshooting the SFCC 1 (2).
(a) Do a check of theA/C wiring/interface between SFCC 1 (2) and the PPUs'. ASM 275106 ASM 275107
(2) If there is a wiring/interface fault, do the repair.
(a) Do the BITE test of the SFCC 1 (2).
(b) If the same fault message is shown and there are no circuit/interface faults:
(3) Swap SFCC 1 and SFCC 2 AMM 27-51-34-000-001 and AMM 27-51-34-400-001.
(a) Get access to the FLP ON GROUND FAULTS and do a check of the ground log.
(b) If the fault moves with SFCC 1(2):
1 Install the serviceable SFCC 1(2) in its initial position.
2 Replace the unserviceable SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] .
(c) If the fault does not move with SFCC 1(2):
(Ref. is given in the Para. Fault Confirmation).
5. Close-up(1) Make sure that there is no SFCC to PPU external circuit/interface short circuit fault, before troubleshooting the SFCC 1 (2).
(a) Do a check of the
(2) If there is a wiring/interface fault, do the repair.
(a) Do the BITE test of the SFCC 1 (2).
(b) If the same fault message is shown and there are no circuit/interface faults:
(3) Swap SFCC 1 and SFCC 2 AMM 27-51-34-000-001 and AMM 27-51-34-400-001.
(a) Get access to the FLP ON GROUND FAULTS and do a check of the ground log.
(b) If the fault moves with SFCC 1(2):
1 Install the serviceable SFCC 1(2) in its initial position.
2 Replace the unserviceable SLAT/FLAP CONTR.COMP. [21CV] or SLAT/FLAP CONTR.COMP. [22CV] .
(c) If the fault does not move with SFCC 1(2):
- Install the SFCCs in their initial positions.
(Ref. is given in the Para. Fault Confirmation).
Subtask 27-51-00-942-061-A
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 27-51-00-860-062-A B. Put the aircraft back to its initial configuration.