DOC AIRBUS | AMM A320FRemoval of the Trimmable Horizontal Stabilizer (THS)
TASK 55-10-11-000-001-A
Removal of the Trimmable Horizontal Stabilizer (THS)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 55-10-11-860-052-A
Subtask 55-10-11-020-051-A
[Rev.10 from 2021]
2026.04.01 02:04:38 UTC
Removal of the Trimmable Horizontal Stabilizer (THS)
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.
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.
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.
WARNING:
YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:
- ON THE THS OR IN THE REAR FUSELAGE
- ON TOP OF THE WINGS OR PYLONS.
WARNING:
MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
DO NOT CAUSE DAMAGE TO THE SURFACES. THE COMPONENTS ARE MADE OF CARBONFIBER REINFORCED PLASTIC.
CAUTION:
THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | CAP - BLANKING, HYDRAULIC |
| No specific | 1 | CONTAINER 3 L(3/4 USGAL) |
| No specific | 1 | CRANE 1000KG (2200 LB) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | 1 | SCALE 1000 KG (2200 LB) |
| No specific | AR | WARNING NOTICE(S) |
| 0U190360 | 1 | PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER |
| 98D27403500000 | 1 | PITCH TRIM CONTROL LOCKING |
| 98D27903500000 | 2 | PIN-SIDE STICK LOCKING |
| 98D55109005000 | 2 | HTP SLING |
| 98D55109005001 | 2 | HTP SLING |
| 98D55109011000 | 1 | SHIPPING CRADLE - HTP |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 11-00-00-000-004-A | Removal of the Hoisting-Point Cover Patches |
| TASK 27-44-51-000-001-A | Removal of the Trimmable Horizontal Stabilizer (THS) Actuator |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-10-00-864-003-A | Depressurize the Blue Hydraulic System |
| TASK 49-11-11-000-003-A | Removal of the Power Plant (APU) (APS 3200) |
| TASK 49-11-11-000-004-A | Removal of the Power Plant (APU) (131-9(A)) |
| TASK 51-78-00-615-002-A | Aircraft Cleaning after a Hydraulic Fluid Leakage |
| TASK 53-53-11-000-002-A | Removal of the Diagonal Support Struts at FR77 |
| TASK 53-56-11-000-001-A | Removal of the Support Fittings of the Trimmable Horizontal Stabilizer (THS) |
| TASK 53-58-11-000-006-A | Removal of the Fuselage Tail Cone |
| TASK 55-15-11-000-001-A | Removal of the Apron 333AT/333AB/343AT/343AB |
Fig. Electrical Connections.Subtask 55-10-11-860-052-A
A. Aircraft Maintenance Configuration
(1) Make sure that the pitch-trim control wheel in the flight compartment is in the zero position.
Subtask 55-10-11-860-050-A (1) Make sure that the pitch-trim control wheel in the flight compartment is in the zero position.
B. Depressurize Hydraulic Systems
(1) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).
Subtask 55-10-11-865-050-A (1) Depressurize the Green, Yellow and Blue hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002) (Ref. AMM TASK 29-10-00-864-003).
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 55-10-11-481-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B11 |
| 49VU | FLIGHT CONTROLS/THS/ACTR/MOT2 | 19CE2 | B09 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | FLIGHT CONTROLS/ELAC1/NORM/SPLY | 15CE1 | B06 |
| 49VU | FLIGHT CONTROLS/THS/ACTR/MOT2 | 19CE2 | B04 |
| ** ON A/C ALL | |||
| 105VU | FLIGHT CONTROLS/ELAC2/STBY SPLY | 16CE2 | A02 |
| 105VU | FLT CTL/ELAC1/STBY SPLY | 16CE1 | A01 |
| 121VU | FLIGHT CONTROLS/THS ACTR/MOT3 | 19CE3 | Q17 |
| 121VU | FLIGHT CONTROLS/THS ACTR/MOT1 | 19CE1 | Q16 |
| 121VU | FLIGHT CONTROLS/ELAC2/NORM/SPLY | 15CE2 | R20 |
D. Install Locking Devices
(1) Put the 98D27903500000 PIN-SIDE STICK LOCKING in the CAPT and F/O side stick controllers.
(2) Put the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control wheel in the flight compartment.
(3) Put the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER in the mechanical input of the THS actuator.
Subtask 55-10-11-941-050-A (1) Put the 98D27903500000 PIN-SIDE STICK LOCKING in the CAPT and F/O side stick controllers.
(2) Put the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control wheel in the flight compartment.
(3) Put the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER in the mechanical input of the THS actuator.
E. Safety Precautions
(1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zones 311/312 and 330/340.
Subtask 55-10-11-020-050-B (1) Put the WARNING NOTICE(S) in the flight compartment to tell persons not to operate the flight controls.
(2) Put the WARNING NOTICE(S) in position to tell persons not to operate the hydraulic systems.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zones 311/312 and 330/340.
F. Remove Related Items
(1) Remove the hoisting point cover patches (Ref. AMM TASK 11-00-00-000-004).
(2) Remove the hoist point plugs from the hoisting points.
(3) Install the hoisting lugs.
(4) Remove the APU:
(6) Remove the THS aprons (Ref. AMM TASK 55-15-11-000-001).
Subtask 55-10-11-941-051-A (1) Remove the hoisting point cover patches (Ref. AMM TASK 11-00-00-000-004).
(2) Remove the hoist point plugs from the hoisting points.
(3) Install the hoisting lugs.
(4) Remove the APU:
- for GTCP 36-300
(Ref. AMM D/O 49-11-11-00) - for APS 3200
(Ref. AMM TASK 49-11-11-000-003) - for 131-9(A)
(Ref. AMM TASK 49-11-11-000-004)
(6) Remove the THS aprons (Ref. AMM TASK 55-15-11-000-001).
G. Attach Support Equipment.
(1) Put the CRANE 1000KG (2200 LB) with the 98D55109005000 HTP SLING or 98D55109005001 HTP SLING and a SCALE 1000 KG (2200 LB) in position. Attach the cables to the hoist fittings. When you remove the horizontal stabilizer, use a scale and monitor the weight. Do not lift with more than 700 kg (1543 lb)
(2) Operate the CRANE 1000KG (2200 LB) and slowly tighten the sling cables, adjust as necessary to get an equal tension on the cables.
4. Procedure(1) Put the CRANE 1000KG (2200 LB) with the 98D55109005000 HTP SLING or 98D55109005001 HTP SLING and a SCALE 1000 KG (2200 LB) in position. Attach the cables to the hoist fittings. When you remove the horizontal stabilizer, use a scale and monitor the weight. Do not lift with more than 700 kg (1543 lb)
(2) Operate the CRANE 1000KG (2200 LB) and slowly tighten the sling cables, adjust as necessary to get an equal tension on the cables.
Subtask 55-10-11-020-051-A
A. Disconnect Electrical Connectors.
(1) Remove the bolts (11), the washers (12), the spacers (14),the clamps (13) and the nuts (15) and disconnect the electrical connectors 7114VC-A (1), 7432 VC-A (2), 7144VC-A (3), 7104VC-A (4) and 7146 VC-A (5).
(2) Remove the bolts (11), the washers (12), the spacers (14), the clamps (13) and the nuts (15) and disconnect the electrical connectors 7137VC-A (10), 7433VC-A (9), 7105VC-A (8), 7131VC-A (7) and 7133VC-A (6).
(3) Put CAP - BLANKING on the disconnected electrical connectors and receptacles.
Subtask 55-10-11-020-052-A (1) Remove the bolts (11), the washers (12), the spacers (14),the clamps (13) and the nuts (15) and disconnect the electrical connectors 7114VC-A (1), 7432 VC-A (2), 7144VC-A (3), 7104VC-A (4) and 7146 VC-A (5).
(2) Remove the bolts (11), the washers (12), the spacers (14), the clamps (13) and the nuts (15) and disconnect the electrical connectors 7137VC-A (10), 7433VC-A (9), 7105VC-A (8), 7131VC-A (7) and 7133VC-A (6).
(3) Put CAP - BLANKING on the disconnected electrical connectors and receptacles.
B. Disconnect Bonding Connections.
(1) Remove the nuts (28), the bolts (25) and the washers (26).
(2) Disconnect the bonding leads (27).
Subtask 55-10-11-020-053-A (1) Remove the nuts (28), the bolts (25) and the washers (26).
(2) Disconnect the bonding leads (27).
C. Disconnect Hydraulic Systems.
(2) Disconnect the flexible hoses (38) and (39).
(3) Put CAP - BLANKING, HYDRAULIC on the disconnected hose ends.
(4) Remove the unwanted hydraulic fluid (Ref. AMM TASK 51-78-00-615-002).
Subtask 55-10-11-010-050-A Subtask 55-10-11-010-051-A WARNING:
DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.
CAUTION:
YOU MUST ALWAYS PUT CAPS ON DISCONNECTED HOSES AND FITTINGS. IF YOU DO NOT DO THIS, YOU MAY CAUSE:
(1) Put a CONTAINER 3 L(3/4 USGAL) in position to collect the unwanted hydraulic fluid. - CONTAMINATION OF THE HOSES,
- DAMAGE TO THE SYSTEM COMPONENTS,
- HYDRAULIC FLUID LEAKS.
(2) Disconnect the flexible hoses (38) and (39).
(3) Put CAP - BLANKING, HYDRAULIC on the disconnected hose ends.
(4) Remove the unwanted hydraulic fluid (Ref. AMM TASK 51-78-00-615-002).
E. Remove Support Fittings
(1) Remove the THS support fittings at the pivot points of the horizontal stabilizer (Ref. AMM TASK 53-56-11-000-001).
Subtask 55-10-11-010-052-A (1) Remove the THS support fittings at the pivot points of the horizontal stabilizer (Ref. AMM TASK 53-56-11-000-001).
F. Removal of the THS
(1) Disconnect the mechanical system link-plate from the input lever of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(2) Disconnect the lower attachment of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(3) Move the THS (51) from the aircraft and lower it on the 98D55109011000 SHIPPING CRADLE - HTP (52).
Subtask 55-10-11-942-050-A (1) Disconnect the mechanical system link-plate from the input lever of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(2) Disconnect the lower attachment of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(3) Move the THS (51) from the aircraft and lower it on the 98D55109011000 SHIPPING CRADLE - HTP (52).