W DOC AIRBUS | AMM A320F

Special Detailed Inspection (US) of CWB, Upper Surface of Triform Fitting (on First Row of Fasteners from RIB1), between STRINGER 8 and FR42, LH/RH

TASK 57-10-00-200-023-A
Special Detailed Inspection (US) of CWB, Upper Surface of Triform Fitting (on First Row of Fasteners from RIB1), between STRINGER 8 and FR42, 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
1. Reason for the Job
Refer to the MPD TASK: 571181-01
SPECIAL DETAILED INSPECTION (US) OF CENTER WING BOX, UPPER SURFACE OF TRIFORM FITTING (ON FIRST ROW OF FASTENERS FROM RIB 1), BETWEEN STRINGER 8 AND FR 42, LH/RH
NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability and the weight variant data given in the SRM introduction.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
FLASHLIGHT
 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
148AZ, 734, 744
147AZ
 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 51-76-12-300-002-A
Repair of the Fuel Tank Fillet
TASK 57-17-11-000-001-A
Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-B
Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-A
Installation of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-B
Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
SRM 517612
NTM 571181
SRM 511100
 (for corrective action)
SRM 512200
 (for corrective action)
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 57-10-00-010-080-A ** ON A/C NOT FOR ALL
A. Get Access
   (1) Open the main landing-gear doors 734 ( 744) (Ref. AMM TASK 32-12-00-010-001).
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 147 (148).
   (3) Remove the access covers 147AZ 148AZ (Ref. AMM TASK 57-17-11-000-001).
   (4) Use a FLASHLIGHT for the inspection.
Subtask 57-10-00-010-080-B ** ON A/C NOT FOR ALL
A. Get Access
   (1) Open the main landing-gear doors 734 ( 744) (Ref. AMM TASK 32-12-00-010-001).
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 148.
   (3) Remove the access cover 148AZ (Ref. AMM TASK 57-17-11-000-001).
   (4) Use a FLASHLIGHT for the inspection.
Subtask 57-10-00-110-069-B
B. Preparation of the Inspection Area
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
   (1) Remove the sealant from the fasteners (1) between STGR8 to FR42.
   (2) Clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) , if necessary.
   (3) Make sure that the surface of the inspection area is clean and smooth.
   (4) Do a visual check of the inspection area for damage or discontinuities.
   (5) Make sure that there is no:
     (a) Corrosion damage:
  • If you find corrosion damage, refer to Structural Repair Manual SRM 512200 for types of corrosion, inspection, removal and corrosion protection.
     (b) Other damage (scratches, cracks, gouges, dents, creases):
  • If you find this type of damage, refer to Structural Repair Manual SRM 511100 for damage classification and corrective action.
4. Procedure
Subtask 57-10-00-270-050-A
A. Inspection
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
   (1) Do a special detailed inspection (US) of the first row of the fasteners at RIB1 in the center wing box. This inspection is applicable to the upper surface of the triform fitting (2) (one each alternate bolt), between STGR8 and FR42 (left and right sides). Refer to Non-destructive Testing Manual NTM 571181.
   (2) Make a report of the damage after the NTM inspection:
     (a) Corrosion damage:
  • If you find damage, refer to Structural Repair Manual SRM 512200 for types of corrosion, inspection, removal and corrosion protection.
     (b) Other damage (scratches, cracks, gouges, dents, creases):
  • If you find this type of damage, refer to Structural Repair Manual SRM 511100 for damage classification and corrective action.
5. Close-up
Subtask 57-10-00-370-050-B
A. Not Applicable
Subtask 57-10-00-390-050-B
B. Application of Sealant
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
F Inspection (US) of the First Row of Fasteners from RIB1 on the Upper Surface of of the Triform Fitting ** ON A/C NOT FOR ALL
   (1) Clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
   (2) Apply sealant on the fasteners (1) between STGR8 to FR42, refer to Structural Repair Manual SRM 517612 and (Ref. AMM TASK 51-76-12-300-002).
Subtask 57-10-00-410-079-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access covers 147AZ 148AZ (Ref. AMM TASK 57-17-11-400-001).
   (3) Remove the access platform(s).
   (4) Close the main landing-gear doors 734 ( 744) (Ref. AMM TASK 32-12-00-410-001).
Subtask 57-10-00-410-079-B ** ON A/C NOT FOR ALL
C. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install the access cover 148AZ (Ref. AMM TASK 57-17-11-400-001).
   (3) Remove the access platform(s).
   (4) Close the main landing-gear doors 734 ( 744) (Ref. AMM TASK 32-12-00-410-001).
[Rev.10 from 2021] 2026.04.02 06:30:30 UTC
AVIA BRAIN PRODUCTION 2026