W DOC AIRBUS | AMM A320F

Special Detailed Inspection (US) of Centre Wing Box, Triform Fitting and Stiffener between Stiffener 6 and FR 42, LH/RH

TASK 57-10-00-270-806-A
Special Detailed Inspection (US) of Centre Wing Box, Triform Fitting and Stiffener between Stiffener 6 and FR 42, LH/RH

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: 141
ZONE: 142
ZONE: 734
ZONE: 744
1. Reason for the Job
Refer to the ALI TASK: 571184-01
SPECIAL DETAILED INSPECTION (US) OF CENTRE WING BOX, TRIFORM FITTING AND STIFFENER BETWEEN STIFFENER 6 AND FR 42, LH/RH.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 2M (6 FT)
 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
141
WING CENTER BOX
142
WING CENTER BOX
734
MAIN DOOR
744
MAIN DOOR
147AZ, 148AZ, 734, 744
 D. Referenced Information
REFERENCE
DESIGNATION
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 57-17-11-000-001-A
Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-A
Installation of Access Cover 147AZ(148AZ)
SRM 512300
SRM 512400
NTM 571202
SRM 511100
 (for corrective action)
SRM 512200
 (for corrective action)
F Triform Fitting and Stiffener of the Center Wing Box, between Stiffener 6 and FR42 ** ON A/C NOT FOR ALL
F Triform Fitting and Stiffener of the Center Wing Box, between Stiffener 6 and FR42 ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 57-10-00-010-104-A ** ON A/C NOT FOR ALL
A. Get Access
   (1) Open MLG door 734 ( 744) (Ref. AMM TASK 32-12-00-010-001).
   (2) Put the ACCESS PLATFORM 2M (6 FT) in position at zone 147 (148).
   (3) Remove access cover 147AZ ( 148AZ) (Ref. AMM TASK 57-17-11-000-001) .
Subtask 57-10-00-110-092-A ** ON A/C NOT FOR ALL
B. Preparation of the Inspection Area
   (1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
   (2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
   (3) Remove the sealant and/or paint from the inspection area if this is necessary for the Nondestructive Testing Manual (NTM) task.
4. Procedure
Subtask 57-10-00-270-062-A ** ON A/C NOT FOR ALL
A. Inspection
   (1) Do a special detailed inspection of the left and right sides of the triform fitting (and of the stringer of the center wing box) for damage or discontinuities. This inspection includes the area between stiffener 6 and FR42. Refer to NTM 571202.
   (2) Make a report of the damage after the NTM inspection:
     (a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual (Ref. SRM 512200) for the corrosion types, inspection, removal and subsequent corrosion protection.
     (b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual (Ref. SRM 511100) for the damage types, classification and corrective action.
Subtask 57-10-00-390-061-A ** ON A/C NOT FOR ALL
B. Sealant or Paint Application
   (1) If the NTM procedure told to remove the sealant and/or paint from the inspection area, apply sealant (refer to SRM 512400) or paint (refer to SRM 512300) on the inspection area.
5. Close-up
Subtask 57-10-00-410-105-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) Install access cover 147AZ ( 148AZ) (Ref. AMM TASK 57-17-11-400-001).
   (3) Remove the access platform(s).
   (4) Close MLG door 734 ( 744) (Ref. AMM TASK 32-12-00-410-001).
[Rev.10 from 2021] 2026.04.02 06:30:32 UTC
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