W DOC AIRBUS | AMM A320F

Check of Slat Transmission Shaft Integrity Including Inspection of Seal Witness Drains

TASK 27-84-00-210-002-A
Check of Slat Transmission Shaft Integrity Including Inspection of Seal Witness Drains

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: 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.
FIN: 35CV
FIN: 36CV
1. Reason for the Job
Refer to the MPD TASK: 278100-04
CHECK OF SLATS TRANSMISSION SHAFTING INTEGRITY, INCLUDING INSPECTION OF SEAL WITNESS DRAINS
NOTE: If you do this task together with MPD-TASK 278100-03, do MPD-TASK 278100-03 first.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
1
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
FLASHLIGHT
No specific
AR
MIRROR - INSPECTION, FLEXIBLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
460005835
AR
SLEEVE - GROUND LOCK
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.12ACC1)
Corrosion Preventive Compound-Heavy Duty Soft Film -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
191BB, 191EB, 191KB, 192EB, 192FB, 192KB, 521AB, 521BT, 521CB, 521EB, 521GB, 521HB, 522CB, 522EB, 522FB, 522JB, 522KB, 522LB, 522NB, 522QB, 522SB, 522UB, 621AB, 621BT, 621CB, 621EB, 621GB, 621HB, 622CB, 622EB, 622FB, 622JB, 622KB, 622LB, 622NB, 622QB, 622SB, 622UB
522AB, 622AB
522XB, 522YB, 622XB, 622YB
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 27-81-51-000-001-A
Removal of the Slat Wing-Tip Brake
TASK 27-81-51-400-001-A
Installation of the Slat Wing-Tip Brake
TASK 27-84-00-210-003-A
Operational Test of Wingtip Brakes/Pressure-Off Brakes, Followed by Check of Transmission Shafting Integrity and Inspection of Seal Witness Drains
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 32-12-00-410-001-A
Close the Main Gear Doors after Access
TASK 53-35-13-000-002-A
Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A
Installation of the Quick-Release Access Panels on the Belly Fairing Structure
TASK 57-41-37-000-004-A
Removal of the Pressure Relief Panels
TASK 57-41-37-000-006-A
Removal of the Access Panels
TASK 57-41-37-000-009-A
Removal of the Access Panel
TASK 57-41-37-000-010-A
Removal of the Access Panel
TASK 57-41-37-000-011-A
Removal of the Access Panel
TASK 57-41-37-000-012-A
Removal of the Access Panel
TASK 57-41-37-400-002-A
Installation of the Pressure Relief Panels
TASK 57-41-37-400-006-A
Installation of the Access Panels
TASK 57-41-37-400-009-A
Installation of the Access Panel
TASK 57-41-37-400-010-A
Installation of the Access Panel
TASK 57-41-37-400-011-A
Installation of the Access Panel
TASK 57-41-37-400-012-A
Installation of the Access Panel
F Torque Shaft - Steady Bearing Typical Installation
F Wing Tip Brakes - Seal Witness Drains
3. Job Set-up
Subtask 27-84-00-941-054-A
A. Safety Precautions
   (1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (2) Put a WARNING NOTICE(S) in the cockpit on panel 114VU to tell persons not to operate the slat system.
   (3) Put a WARNING NOTICE(S) in the cockpit on panel 40VU to tell persons not to pressurize the hydraulic systems.
   (4) Put a WARNING NOTICE(S) in position of access panel 195BB and 196BB to tell persons not to operate the landing gear doors.
   (5) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
Subtask 27-84-00-020-050-A
B. Remove the Safety Collar
   (1) Remove the safety collar from the circuit breakers 9CV and 11CV.
Subtask 27-84-00-865-057-A
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/WTB/SLT/SYS211CVP19
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
122VUFLIGHT CONTROLS/WTB/SLT/SYS19CVS06
Subtask 27-84-00-010-053-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
   (2) Make sure that the 460005835 SLEEVE - GROUND LOCK is installed on each MLG door actuating cylinder.
   (3) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in the applicable MLG bay.
   (4) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable zones 521(621) and 522(622).
   (5) Open the applicable access panels:
     (a) For the left wing, open:
     (b) For the right wing, open:
     (c) If necessary, open the related pylon-to-wing access panels.
   (6) Open the applicable quick release access panels (Ref. AMM TASK 53-35-13-000-002):
     (a) For the left wing, open:
     (b) For the right wing, open:
Subtask 27-84-00-010-053-B ** ON A/C NOT FOR ALL
D. Get Access
   (1) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
   (2) Make sure that the 460005835 SLEEVE - GROUND LOCK is installed on each MLG door actuating cylinder.
   (3) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in the applicable MLG bay.
   (4) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable zones 521(621) and 522(622).
   (5) Open the applicable access panels:
     (a) For the left wing, open:
     (b) For the right wing, open:
     (c) If necessary, open the related pylon-to-wing access panels.
   (6) Open the applicable quick release access panels (Ref. AMM TASK 53-35-13-000-002):
     (a) For the left wing, open:
     (b) For the right wing, open:
Subtask 27-84-00-941-059-A
E. Safety Precautions
   (1) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed on the slat/flap control lever.
4. Procedure
Subtask 27-84-00-110-052-A
A. Clean the Components
   (1) Clean the component to be inspected with a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) made moist with solvent Non Aqueous Cleaner-General - - (Material No.08BAA9) .
Subtask 27-84-00-210-052-A
B. Check the Slat Transmission Shaft Integrity and Inspection of the Seal Witness Drains of the Wing Tip Brakes (WTBs)
   (1) Examine the torque shaft assemblies:
     (a) Make sure that the torque shaft assemblies are correctly installed and that the retainer springs safety the pins correctly.
     (b) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE to examine the torque shafts assemblies and input joints for:
  • stress
  • distortion
  • dents
  • cracks
  • corrosion
  • satisfactory surface protection.
     (c) Make sure that the connections between the torque shafts and input joints are tight.
     (d) Do an inspection of the flange bolts for corrosion protection. If the corrosion protection is unsatisfactory, apply a new layer of Corrosion Preventive Compound-Heavy Duty Soft Film - (Material No.12ACC1) .
   (2) Examine the steady bearing assemblies:
     (a) Make sure that the steady bearing assemblies are correctly installed.
     (b) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE to examine the steady bearings and their structural interfaces for:
  • stress
  • cracks
  • corrosion
  • satisfactory surface protection.
   (3) If you find a defective component, replace this component (Ref. AMM TASK 27-84-00-210-003).
WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
  • FLUSH IT AWAY WITH CLEAN WATER
  • GET MEDICAL AID.
   (4) Examine the WTB:
     (a) Use a FLASHLIGHT and a MIRROR - INSPECTION, FLEXIBLE to examine the outer sides of the WTB at the seal witness drains.
     (b) The area around the seal witness drains is permitted to be wet with oil. But, if a drop of hydraulic fluid is found, replace the WTB (Ref. AMM TASK 27-81-51-000-001), (Ref. AMM TASK 27-81-51-400-001).
     (c) Clean the area around the seal witness drains if this area was wet with oil . Use a Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
5. Close-up
Subtask 27-84-00-410-057-A ** ON A/C NOT FOR ALL
A. Close Access

   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the applicable access panels:
     (a) For the left wing, close:
     (b) For the right wing, close:
     (c) If necessary, close the related pylon-to-wing access panels.
   (3) Close the applicable quick release access panels (Ref. AMM TASK 53-35-13-400-002):
     (a) For the left wing, close:
     (b) For the right wing, close:
   (4) Remove the access platform(s).
   (5) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
Subtask 27-84-00-410-057-B ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the applicable access panels:
     (a) For the left wing, close:
     (b) For the right wing, close:
     (c) If necessary, close the related pylon-to-wing access panels.
   (3) Close the applicable quick release access panels (Ref. AMM TASK 53-35-13-400-002):
     (a) For the left wing, close:
     (b) For the right wing, close:
   (4) Remove the access platform(s).
   (5) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
Subtask 27-84-00-865-058-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB06
** ON A/C NOT FOR ALL
49VUFLIGHT CONTROLS/SLT/CTL AND MONG/SYS15CVB01
** ON A/C ALL
121VUFLIGHT CONTROLS/WTB/SLT/SYS211CVP19
121VUFLIGHT CONTROLS/SLT/CTL/SYS27CVR21
122VUFLIGHT CONTROLS/WTB/SLT/SYS19CVS06
Subtask 27-84-00-420-050-A
C. Install the Safety Collar
   (1) Install the safety collar on the circuit breakers 9CV and 11CV.
Subtask 27-84-00-942-057-A
D. Removal of Equipment
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the safety barriers.
   (3) Remove the WARNING NOTICE(S).
   (4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.03.31 23:56:38 UTC
"Aviabrain" 2025