W DOC AIRBUS | AMM A320F

Detailed Visual Inspection of Outer Wing Bottom Skin Lower Surface at Drainholes for Track Cans 5, 6, 7, 8, 9, 10, 11 and 12 (Rib Bay ....)

TASK 57-21-00-200-025-A
Detailed Visual Inspection of Outer Wing Bottom Skin Lower Surface at Drainholes for Track Cans 5, 6, 7, 8, 9, 10, 11 and 12 (Rib Bay ....)

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: 540
ZONE: 550
ZONE: 640
ZONE: 650
1. Reason for the Job
Refer to the MPD TASK: 572153-01
DETAILED INSPECTION OF OUTER WING, BOTTOM SKIN LOWER SURFACE, AT DRAIN HOLES FOR SLAT CANS 5,6,7,8,9,10,11 AND 12 (RIB BAYS 9-10, 11-12, 13-14, 16-17, 18-19, 21-22, 23-24 & 25-26) DRY BAY DRAIN HOLES IN RIB BAY 26-27 AND MAGNETIC LEVEL INDICATOR POSITIONS ADJACENT TO RIB 9 AND RIB 12
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 2M (6 FT)
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
98D27803500001
1
LOCKING TOOL ZERO POS
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
540
FUEL TANK
550
VENT SURGE TANK
640
FUEL TANK
650
VENT SURGE TANK
 D. Referenced Information
REFERENCE
DESIGNATION
SRM 572100
 (for corrective action)
F Details of the Bottom Skin Drain Holes
3. Job Set-up
Subtask 57-21-00-941-075-A
A. Safety Precautions
   (1) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
   (2) Put WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
   (3) Put the SAFETY BARRIER(S) in position.
   (4) Put the ACCESS PLATFORM 2M (6 FT) in position below the wing fuel tank, zones 540 (640) and 550 (650).
4. Procedure
Subtask 57-21-00-110-074-A
A. Preparation for Inspection
   (1) Use a clean Textile-Lint free Cotton - (Material No.14SBA1) , made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) , to clean the lower surface of the bottom skin at:
  • the drain holes for track cans 5 thru 12 (rib bays 9-10, 11-12, 13-14, 16-17, 18-19, 21-22, 23-24 and 25-26).
  • the dry bay drain holes in rib bay 26-27.
  • the MLI positions adjacent to RIB9 and RIB12.
Subtask 57-21-00-210-078-A
B. Inspection
   (1) Examine the bottom skin at the drain holes for track cans 5 thru 12 (rib bays 9-10, 11-12, 13-14, 16-17, 18-19, 21-22, 23-24, and 25-26), and the dry bay drain holes (rib bay 26-27) and the MLI positions adjacent to RIB9 and RIB12. Make sure that:
  • there is no corrosion or damage
  • there are no scratches or scores
  • there are no loose or damaged fasteners
  • the surface protection is in the correct condition.
NOTE: If necessary, refer to the SRM 572100 for the correct repair procedure.
5. Close-up
Subtask 57-21-00-942-074-A
A. 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 access platform(s).
   (4) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
   (5) Remove the WARNING NOTICE(S).
   (6) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 02:10:26 UTC
"Aviabrain" 2025