DOC AIRBUS | AMM A320FInstallation of the Trimmable Horizontal Stabilizer (THS)
TASK 55-10-11-400-001-A
Installation of the Trimmable Horizontal Stabilizer (THS)
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 55-10-11-860-051-A
Subtask 55-10-11-420-051-A
Subtask 55-10-11-410-053-A
[Rev.10 from 2021]
2026.04.01 02:04:40 UTC
Installation 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:
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 | AR | CAP - BLANKING |
| No specific | AR | CAP - BLANKING, HYDRAULIC |
| No specific | 1 | CRANE 1000KG (2200 LB) |
| No specific | 1 | SCALE 1000 KG (2200 LB) |
| 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 |
|---|---|
| (Material No.04QAB2) | Coating_- Flexible Structure |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 11-00-00-400-022-A | Installation of the Hoisting-Point Cover Patches |
| TASK 27-41-00-720-001-A | Functional Test of the THS-Actuator Overtravel Related to the Mechanical Indicator |
| TASK 27-41-00-820-001-A | Adjustment of the THS Zero Position |
| TASK 27-44-00-710-002-A | Operational Test of the Trimmable Horizontal Stabilizer Actuator with the Individual Hydraulic Systems |
| TASK 27-44-51-000-001-A | Removal of the Trimmable Horizontal Stabilizer (THS) Actuator |
| TASK 27-44-51-400-001-A | Installation 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 49-11-11-400-003-A | Installation of the Power Plant (APU) (APS 3200) |
| TASK 49-11-11-400-004-A | Installation of the Power Plant (APU) (131-9(A)) |
| TASK 53-53-11-400-002-A | Installation of the Diagonal Support Struts at FR77 |
| TASK 53-56-11-400-001-A | Installation of the Support Fittings of the Trimmable Horizontal Stabilizer (THS) |
| TASK 53-58-11-400-007-A | Installation of the Fuselage Tail Cone |
| TASK 55-15-11-400-001-A | Installation of the Apron 333AT/333AB/343AT/343AB |
Fig. Electrical Connections.Subtask 55-10-11-860-051-A
A. Aircraft Maintenance Configuration
(1) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002), (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the 98D27903500000 PIN-SIDE STICK LOCKING is in position in the CAPT and F/O side stick controllers.
(3) Make sure that the pitch-trim control wheel in the flight compartment is in the zero position.
(4) Make sure that the 98D27403500000 PITCH TRIM CONTROL LOCKING is installed on the pitch-trim control wheel.
(5) Make sure that the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER is installed on the THS actuator.
(6) Make sure that the mechanical system link-plate is disconnected from the input lever of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(7) Make sure that the warning notices are in position in the flight compartment to tell persons not to operate the flight controls.
(8) Make sure that the warning notices are in position to tell persons not to operate the hydraulic systems.
(9) Make sure that the access platforms are in position at zones 311/312 and 330/340.
Subtask 55-10-11-865-052-A (1) Make sure that the hydraulic systems are depressurized (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002), (Ref. AMM TASK 29-10-00-864-003).
(2) Make sure that the 98D27903500000 PIN-SIDE STICK LOCKING is in position in the CAPT and F/O side stick controllers.
(3) Make sure that the pitch-trim control wheel in the flight compartment is in the zero position.
(4) Make sure that the 98D27403500000 PITCH TRIM CONTROL LOCKING is installed on the pitch-trim control wheel.
(5) Make sure that the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER is installed on the THS actuator.
(6) Make sure that the mechanical system link-plate is disconnected from the input lever of the THS actuator (Ref. AMM TASK 27-44-51-000-001).
(7) Make sure that the warning notices are in position in the flight compartment to tell persons not to operate the flight controls.
(8) Make sure that the warning notices are in position to tell persons not to operate the hydraulic systems.
(9) Make sure that the access platforms are in position at zones 311/312 and 330/340.
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| 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 |
Subtask 55-10-11-420-051-A
A. Installation of the Support Equipment
(1) Put the CRANE 1000KG (2200 LB) with the 98D55109005000 HTP SLING or the 98D55109005001 HTP SLING and the SCALE 1000 KG (2200 LB) in position.
(2) Attach the sling cables to the hoist fittings of the THS (51).
(3) Operate the CRANE 1000KG (2200 LB) and slowly adjust as necessary the sling cables to get an equal tension on them.
(4) When you install the THS (51), use the scale and monitor the weight.
(5) Carefully lift the THS (51) from the 98D55109011000 SHIPPING CRADLE - HTP (52) to the installation position.
Subtask 55-10-11-420-050-A (1) Put the CRANE 1000KG (2200 LB) with the 98D55109005000 HTP SLING or the 98D55109005001 HTP SLING and the SCALE 1000 KG (2200 LB) in position.
(2) Attach the sling cables to the hoist fittings of the THS (51).
(3) Operate the CRANE 1000KG (2200 LB) and slowly adjust as necessary the sling cables to get an equal tension on them.
(4) When you install the THS (51), use the scale and monitor the weight.
(5) Carefully lift the THS (51) from the 98D55109011000 SHIPPING CRADLE - HTP (52) to the installation position.
B. Install Lower Attachment
(1) Install the lower attachment of the THS actuator (Ref. AMM TASK 27-44-51-400-001)
(2) Connect the mechanical system link-plate to the input lever of the THS actuator (Ref. AMM TASK 27-44-51-400-001).
Subtask 55-10-11-410-050-A (1) Install the lower attachment of the THS actuator (Ref. AMM TASK 27-44-51-400-001)
(2) Connect the mechanical system link-plate to the input lever of the THS actuator (Ref. AMM TASK 27-44-51-400-001).
C. Install Support Fittings
(1) Install the THS support fittings at the pivot points of the horizontal stabilizer (Ref. AMM TASK 53-56-11-400-001).
Subtask 55-10-11-410-051-A Subtask 55-10-11-020-055-A (1) Install the THS support fittings at the pivot points of the horizontal stabilizer (Ref. AMM TASK 53-56-11-400-001).
E. Connect Hydraulic, Bonding and Electrical Connectors
(1) Connect the Green, Yellow and Blue hydraulic systems.
(b) Connect the flexible hoses (38) and (39).
(a) Connect the bonding leads (27), and attach them with the bolts (25), the washers (26) and the nuts (28).
(b) Apply Coating_- Flexible Structure (Material No.04QAB2) to the bonding connections.
(3) Connect the electrical connections.
(a) Remove the CAP - BLANKING and connect the electrical connectors 7114VC-A (1), 7432VC-A (2), 7144VC-A (3), 7104VC-A (4) and 7146VC-A (5).
(b) Install the clamps (13), the bolts (11), the washers (12), the spacers (14) and the nuts (15).
(c) Remove the CAP - BLANKING and connect the electrical connectors 7137VC-A (10), 7433VC-A (9), 7105VC-A (8), 7131VC-A (7) and 7133VC-A (6).
(d) Install the clamps (13), the bolts (11), the washers (12), the spacers (14) and the nuts (15).
Subtask 55-10-11-020-054-B (1) Connect the Green, Yellow and Blue hydraulic systems.
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.
(a) Remove the CAP - BLANKING, HYDRAULIC from the hydraulic pipes and hoses. (b) Connect the flexible hoses (38) and (39).
NOTE: Make sure that the hydraulic fluid is removed if it drops onto components or structure.
(2) Connect the bonding connections. (a) Connect the bonding leads (27), and attach them with the bolts (25), the washers (26) and the nuts (28).
(b) Apply Coating_- Flexible Structure (Material No.04QAB2) to the bonding connections.
(3) Connect the electrical connections.
(a) Remove the CAP - BLANKING and connect the electrical connectors 7114VC-A (1), 7432VC-A (2), 7144VC-A (3), 7104VC-A (4) and 7146VC-A (5).
(b) Install the clamps (13), the bolts (11), the washers (12), the spacers (14) and the nuts (15).
(c) Remove the CAP - BLANKING and connect the electrical connectors 7137VC-A (10), 7433VC-A (9), 7105VC-A (8), 7131VC-A (7) and 7133VC-A (6).
(d) Install the clamps (13), the bolts (11), the washers (12), the spacers (14) and the nuts (15).
F. Remove the Hoisting Equipment.
(1) Remove the 98D55109005000 HTP SLING or 98D55109005001 HTP SLING from the horizontal stabilizer.
(2) Remove the hoisting lugs.
(3) Install the hoist point plugs.
Subtask 55-10-11-081-050-A (1) Remove the 98D55109005000 HTP SLING or 98D55109005001 HTP SLING from the horizontal stabilizer.
(2) Remove the hoisting lugs.
(3) Install the hoist point plugs.
NOTE: When installed the plugs must fit flush to the skin of the horizontal stabilizer.
(4) Install the hoisting point cover patches (Ref. AMM TASK 11-00-00-400-022). G. Remove Locking Devices
(1) Remove the 98D27903500000 PIN-SIDE STICK LOCKING from the CAPT and F/O side stick controllers.
(2) Remove the 98D27403500000 PITCH TRIM CONTROL LOCKING from the pitch-trim control wheel in the flight compartment.
(3) Remove the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER from the mechanical input of the THS actuator.
Subtask 55-10-11-865-051-A (1) Remove the 98D27903500000 PIN-SIDE STICK LOCKING from the CAPT and F/O side stick controllers.
(2) Remove the 98D27403500000 PITCH TRIM CONTROL LOCKING from the pitch-trim control wheel in the flight compartment.
(3) Remove the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER from the mechanical input of the THS actuator.
H. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 55-10-11-720-050-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 |
I. Functional Test
(1) Adjust the THS (51) at zero position (Ref. AMM TASK 27-41-00-820-001).
(2) Do a functional test of the THS (51) (Ref. AMM TASK 27-41-00-720-001).
Subtask 55-10-11-710-050-A (1) Adjust the THS (51) at zero position (Ref. AMM TASK 27-41-00-820-001).
(2) Do a functional test of the THS (51) (Ref. AMM TASK 27-41-00-720-001).
J. Operational Test
(1) Do an operational test on the THS flight control system (Ref. AMM TASK 27-44-00-710-002)
5. Close-up(1) Do an operational test on the THS flight control system (Ref. AMM TASK 27-44-00-710-002)
Subtask 55-10-11-410-053-A
A. Visual Inspection
Make sure that the work area is clean and clear of tools and other items.
Subtask 55-10-11-410-052-A ** ON A/C NOT FOR ALL Make sure that the work area is clean and clear of tools and other items.
B. Install Related Items
(1) Install the tail cone (Ref. AMM TASK 53-58-11-400-007).
(2) Install the APU:
Subtask 55-10-11-410-052-B ** ON A/C NOT FOR ALL (1) Install the tail cone (Ref. AMM TASK 53-58-11-400-007).
(2) Install the APU:
- for GTCP 36-300
(Ref. AMM D/O 49-11-11-40) - for APS 3200
(Ref. AMM D/O 49-11-11-40) - for 131-9(A)
(Ref. AMM TASK 49-11-11-400-004)
B. Install Related Items
(1) Install the tail cone (Ref. AMM TASK 53-58-11-400-007).
(2) Install the APU:
Subtask 55-10-11-942-051-A (1) Install the tail cone (Ref. AMM TASK 53-58-11-400-007).
(2) Install the APU:
- for GTCP 36-300
(Ref. AMM D/O 49-11-11-40) - for APS 3200
(Ref. AMM TASK 49-11-11-400-003) - for 131-9(A)
(Ref. AMM TASK 49-11-11-400-004)
C. Remove Ground Equipment
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).