W DOC AIRBUS | AMM A320F

Visual Inspection of the THS-Actuator

TASK 27-44-51-210-001-A
Visual Inspection of the THS-Actuator

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 310
FIN: 9CE
1. Reason for the Job
To make sure that the external area of the THS-actuator is in a correct condition.
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
FLASHLIGHT
No specific
AR
WARNING NOTICE(S)
98D27403500000
2
PITCH TRIM CONTROL LOCKING
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BBB1)
Non Aqueous Cleaner-- Petroleum Based -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
310
FUSLG TAIL SECTION AFT OF AFT PRESS BHD
312AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 27-00-00-080-001-A
Removal of the Pitch-Trim Control Locking Tool (98D27403500000)
TASK 27-00-00-480-001-A
Installation of the Pitch-Trim Control Locking Tool (98D27403500000)
TASK 27-44-51-210-004-A
Check Oil Level of THS Actuator Gearbox
TASK 29-00-00-864-001-A
Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
F THS Actuator 9CE with the Electrical Load Sensing Device (ELSD) ** ON A/C NOT FOR ALL
F THS Actuator 9CE ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 27-44-51-941-077-A
A. Safety Precautions
   (1) Make sure that the THS in the 0 degree position.
   (2) Make sure that the Green and Yellow hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
   (3) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green and Yellow hydraulic systems:
  • On the panel 40VU in the cockpit.
  • On the ground service panels of the Green and Yellow hydraulic systems.
   (4) Put the 98D27403500000 PITCH TRIM CONTROL LOCKING on the pitch-trim control-wheel in the cockpit (Ref. AMM TASK 27-00-00-480-001).
   (5) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the pitch controls.
Subtask 27-44-51-010-052-A
B. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position.
   (2) Open the access door 312AR.
4. Procedure
Subtask 27-44-51-210-054-A
A. Examine the casing (1) of the THS actuator
   (1) Clean the casing (1) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and let it dry.
   (2) Use a FLASHLIGHT and examine the casing (1) for:
  • cracks,
  • dents,
  • corrosion,
  • signs of leakage,
  • satisfactory protective finish.
   (3) Make sure that the line replaceable units (LRU) are correctly installed on the casing (1).
   (4) Make sure that the THS actuator has the correct quantity of oil (Ref. AMM TASK 27-44-51-210-004).
5. Close-up
Subtask 27-44-51-410-052-A
A. Close Access
   (1) Remove the 98D27403500000 PITCH TRIM CONTROL LOCKING from the pitch-trim control-wheel in the cockpit (Ref. AMM TASK 27-00-00-080-001).
   (2) Make sure that the work area is clean and clear of tools and other items.
   (3) Close the access door 312AR.
   (4) Remove the access platform(s).
   (5) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.03.31 23:51:25 UTC
"Aviabrain" 2025