DOC AIRBUS | AMM A320FRemoval of the Flap Track 1 to 4 Actuators
TASK 27-54-49-000-008-A
Removal of the Flap Track 1 to 4 Actuators
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 27-54-49-941-076-A
Subtask 27-54-49-740-068-A
[Rev.10 from 2021]
2026.04.01 04:27:30 UTC
Removal of the Flap Track 1 to 4 Actuators
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
CAUTION:
BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:
- DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
- DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
- MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.
ZONE: 193
ZONE: 194
ZONE: 570
ZONE: 670
FIN: 6205CM
FIN: 6211CM
FIN: 6221CM
FIN: 6233CM
FIN: 6255CM
FIN: 6261CM
FIN: 6271CM
FIN: 6283CM
1. Reason for the JobZONE: 194
ZONE: 570
ZONE: 670
FIN: 6205CM
FIN: 6211CM
FIN: 6221CM
FIN: 6233CM
FIN: 6255CM
FIN: 6261CM
FIN: 6271CM
FIN: 6283CM
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| No specific | AR | CLAMPS |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27508002000 | 4 | SET-CARRIAGE STOP,FLAP |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 193 | UPPER WING FAIRING SLIDE STOWAGE |
| 194 | UPPER WING FAIRING SLIDE STOWAGE |
| 570 | AFT SECTION OF L WING & TE FIXED STRUCT |
| 670 | AFT SECTION OF R WING & TE FIXED STRUCT |
| 193AB, 193BB, 194AB, 194BB, 573AB, 573BB, 573CB, 575AB, 575BB, 575CB, 575DB, 575EB, 575FB, 575GB, 673AB, 673BB, 673CB, 675AB, 675BB, 675CB, 675DB, 675EB, 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 27-50-00-860-801-A | Readout of the Flap Position Pickoff Unit (PPU) Data |
| TASK 27-50-00-866-008-A | Extension of the Flaps on the Ground |
| TASK 27-50-00-866-008-A-01 | Extension of the Flaps/Slats on the Ground |
| TASK 27-51-18-000-001-A | Removal of the Asymmetry-Position Pick-Off Unit |
| TASK 27-54-49-000-001-A | Removal of the Flap Track 1 Actuator |
| TASK 27-54-49-000-002-A | Removal of the Flap Track 2 Actuator |
| TASK 27-54-49-000-003-A | Removal of the Flap Track 3 Actuator |
| TASK 27-54-49-000-004-A | Removal of the Flap Track 4 Actuator |
| TASK 27-60-00-866-002-A | Extension-Retraction of the Spoilers for Maintenance |
| TASK 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-12-00-010-001-A | Open the Main Gear Doors for Access |
| TASK 53-35-11-000-001-A | Removal of the Wing-to-Fuselage Fairings |
| 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) |
Subtask 27-54-49-941-076-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 not to operate the flaps.
(3) Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear doors.
(4) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
Subtask 27-54-49-860-064-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 not to operate the flaps.
(3) Put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear doors.
(4) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
B. Aircraft Maintenance Configuration
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever in the cockpit.
(3) Put the WARNING NOTICE(S) in position to tell persons not to operate the flaps.
(4) Extend the No. 1 to No. 5 spoilers (Ref. AMM TASK 27-60-00-866-002).
(5) Make sure that a 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the piston rod of each servo-control.
4. ProcedureWARNING:
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) Extend the flaps to position 3 (Ref. AMM TASK 27-50-00-866-008). (2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever in the cockpit.
(3) Put the WARNING NOTICE(S) in position to tell persons not to operate the flaps.
(4) Extend the No. 1 to No. 5 spoilers (Ref. AMM TASK 27-60-00-866-002).
(5) Make sure that a 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the piston rod of each servo-control.
Subtask 27-54-49-740-068-A
A. Readout of the PPU Data
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the readout of the PPU data (Ref. AMM TASK 27-50-00-860-801).
(Ref. AMM TASK 24-41-00-862-002).
Subtask 27-54-49-865-089-A (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) Do the readout of the PPU data (Ref. AMM TASK 27-50-00-860-801).
NOTE: Airbus recommends to do the readout and recording of the PPU angles before the maintenance action.
In case of a loss of the torque shaft fixture you can put the flap transmission system back to the initial condition (without a complete adjustment of the system).
(3) De-energize the aircraft electrical circuitsIn case of a loss of the torque shaft fixture you can put the flap transmission system back to the initial condition (without a complete adjustment of the system).
(Ref. AMM TASK 24-41-00-862-002).
B. Open, safety and tag this(these) circuit breaker(s):
Subtask 27-54-49-010-065-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/FLP/CTL AND/MONG/SYS2 | 8CV | Q21 |
C. Get Access
(1) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable access panels.
(3) Remove the applicable access panels:
(a) For the LH wing, remove:
Subtask 27-54-49-020-063-A (1) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable access panels.
(3) Remove the applicable access panels:
(a) For the LH wing, remove:
- 193AB 193BB (Ref. AMM TASK 53-35-11-000-001)
- 573AB 573BB 573CB (Ref. AMM TASK 57-51-37-000-002)
- 575AB 575BB 575CB 575DB 575EB 575FB 575GB (Ref. AMM TASK 57-51-37-000-004).
D. Preparation for Removal of the Flap Track 1 thru 4 Actuators
(1) Hold the trailing edges of the inboard and outboard flaps on the supports.
(2) Use the 98D27508002000 SET-CARRIAGE STOP,FLAP or the CLAMPS to hold the flap carriages in position.
(4) Remove the Asymmetry Position Pick-Off Unit (APPU) from the flap track 4 actuator (Ref. AMM TASK 27-51-18-000-001).
Subtask 27-54-49-020-062-A (1) Hold the trailing edges of the inboard and outboard flaps on the supports.
(2) Use the 98D27508002000 SET-CARRIAGE STOP,FLAP or the CLAMPS to hold the flap carriages in position.
NOTE: This is to make sure that the flap carriages do not move.
(3) Measure and record dimension A between the actuator lever and its stop face. (4) Remove the Asymmetry Position Pick-Off Unit (APPU) from the flap track 4 actuator (Ref. AMM TASK 27-51-18-000-001).
NOTE: An APPU can be removed/installed when the flap/slat system is not at zero if:
- The same APPU is installed and its position has not changed
- No movement of the flap/slat system is permitted during the time the APPU is removed.
NOTE: The unit will be locked in the extended position and must not be adjusted.
E. Removal of the Flap Track 1 to 4 Actuators
(1) Remove the flap track 1 to 4 actuators in sequence (Ref. AMM TASK 27-54-49-000-001), (Ref. AMM TASK 27-54-49-000-002), (Ref. AMM TASK 27-54-49-000-003) and (Ref. AMM TASK 27-54-49-000-004).
(1) Remove the flap track 1 to 4 actuators in sequence (Ref. AMM TASK 27-54-49-000-001), (Ref. AMM TASK 27-54-49-000-002), (Ref. AMM TASK 27-54-49-000-003) and (Ref. AMM TASK 27-54-49-000-004).