DOC AIRBUS | AMM A320FReset of the Torque Limiters of the Flap System on the Ground
TASK 27-50-00-866-010-A
Reset of the Torque Limiters of the Flap System on the Ground
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 27-50-00-941-054-A
Subtask 27-50-00-866-055-A
Subtask 27-50-00-860-059-A
[Rev.10 from 2021]
2026.03.31 23:51:58 UTC
Reset of the Torque Limiters of the Flap System on the Ground
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
1. Reason for the Job- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT) |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 193AB, 193BB, 194AB, 194BB, 573AB, 573BB, 575BB, 575CB, 575FB, 575GB, 673AB, 673BB, 675BB, 675CB, 675FB, 675GB |
| REFERENCE | DESIGNATION |
|---|---|
| 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 27-54-00-710-001-A | Operational Test of the Flap System |
| TASK 29-10-00-863-002-A | Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 57-51-37-000-002-A | Removal of the Access Panels 571AB(671AB), 573AB(673AB), 573BB(673BB), 573CB(673CB), 573EB(673EB) |
| TASK 57-51-37-000-004-A | Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB) |
| TASK 57-51-37-400-002-A | Installation of the Access Panels 571AB(671AB), 573AB(673AB), 573BB(673BB), 573CB(673CB), 573EB(673EB) |
| TASK 57-51-37-400-004-A | Installation of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB) |
Torque Limiters - Detail and LocationSubtask 27-50-00-941-054-A
A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put the WARNING NOTICE(S) in position, to tell persons that the flap system is in operation.
Subtask 27-50-00-860-058-A (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Put the WARNING NOTICE(S) in position, to tell persons that the flap system is in operation.
B. Aircraft Maintenance Configuration
(2) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
Subtask 27-50-00-865-061-A WARNING:
MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002). (2) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002).
NOTE: The flaps travel at full speed if the Power Transfer Unit (PTU) is in operation. If the PTU is isolated (electrically or hydraulically), only the Yellow flap motor operates and the flaps travel at half speed.
NOTE: An ECAM F/CTL FLAP SYS 1 FAULT message will show when the PTU is isolated. This message can be ignored.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 27-50-00-865-062-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
D. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 27-50-00-010-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/WTB/FLP/SYS2 | 12CV | P20 |
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 122VU | FLIGHT CONTROLS/WTB/FLP/SYS1 | 10CV | S07 |
E. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT) in position, below the applicable access panel.
(2) Remove the applicable access panel(s) to gain access to the torque limiter(s):
(a) For the LH wing, remove the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
(b) For the RH wing, remove the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
4. Procedure(1) Put an ACCESS PLATFORM 4M (13 FT) in position, below the applicable access panel.
(2) Remove the applicable access panel(s) to gain access to the torque limiter(s):
(a) For the LH wing, remove the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
(b) For the RH wing, remove the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
Subtask 27-50-00-866-055-A
A. Reset of the Torque Limiters of the Flap System on the Ground
(1) To release the load from the torque limiter(s) and allow the indicators to be closed, do the step that follows:
(a) Put the slat/flap control lever to the last position that had been set, before the torque limiter(s) operated.
(2) Remove the safety collar from the circuit breakers 10CV and 12CV.
Subtask 27-50-00-865-063-A (1) To release the load from the torque limiter(s) and allow the indicators to be closed, do the step that follows:
(a) Put the slat/flap control lever to the last position that had been set, before the torque limiter(s) operated.
(2) Remove the safety collar from the circuit breakers 10CV and 12CV.
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 27-50-00-866-056-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B07 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/WTB/FLP/SYS2 | 12CV | P20 |
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 122VU | FLIGHT CONTROLS/WTB/FLP/SYS1 | 10CV | S07 |
C. Continue the Reset of the Torque Limiters
(1) Push each applicable indicator (1) down so that it aligns with the torque limiter, in the usual system condition.
Subtask 27-50-00-710-051-A (1) Push each applicable indicator (1) down so that it aligns with the torque limiter, in the usual system condition.
D. Operational Test
(1) Do the operational test of the flap system (Ref. AMM TASK 27-54-00-710-001).
5. Close-up(1) Do the operational test of the flap system (Ref. AMM TASK 27-54-00-710-001).
Subtask 27-50-00-860-059-A
A. Aircraft Configuration
(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
Subtask 27-50-00-865-064-A (1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 27-50-00-410-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 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/FLP/CTL AND MONG/SYS1 | 6CV | B02 |
| 49VU | FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1 | 5CV | B01 |
| ** ON A/C ALL | |||
| 121VU | FLIGHT CONTROLS/WTB/FLP/SYS2 | 12CV | P20 |
| 121VU | FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
| 121VU | FLIGHT CONTROLS/SLT/CTL/SYS2 | 7CV | R21 |
| 122VU | FLIGHT CONTROLS/WTB/FLP/SYS1 | 10CV | S07 |
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel(s):
(a) For the LH wing, install the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
(b) For the RH wing, install the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
Subtask 27-50-00-942-054-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panel(s):
(a) For the LH wing, install the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
(b) For the RH wing, install the following panels:
1 For the flap track No.1 torque limiter:
2 For the flap track No.2 torque limiter:
3 For the flap track No.3 torque limiter:
4 For the flap track No.4 torque limiter:
D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.