Special Detailed Inspection of Upper Skin of Longitudinal Lap Joints, Including Crack Stopper Areas, at Stringer 6 between FR35.8 and FR47, External Surface, LH/RH

TASK 53-31-00-280-801-A
Special Detailed Inspection of Upper Skin of Longitudinal Lap Joints, Including Crack Stopper Areas, at Stringer 6 between FR35.8 and FR47, External Surface, LH/RH

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 240

1. Reason for the Job
Refer to the MPD TASK: 533124-01
SPECIAL DETAILED INSPECTION (LFEC) OF UPPER SKIN OF LONGITUDINAL LAP JOINTS, INCLUDING CRACK STOPPER AREAS, AT STRINGER 6 BETWEEN FR35.8 AND FR 47, EXTERNAL SURFACE, 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.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE
98L12003001000	AR	HARNESS,SAFETY

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
240	MID PASSENGER COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
SRM 511100
SRM 512200
SRM 512300
SRM 512400
NTM 533124
External Surface of the Longitudinal Lap-Joints Upper-Skin (Crack Stopper Areas Included)

3. Job Set-up
Subtask 53-31-00-010-154-A

A. Get Access
(1) Put the ACCESS PLATFORM 6M (20 FT) - ADJUSTABLE in position below the inspection area.

Subtask 53-31-00-110-157-A

B. Preparation of the Inspection Area
(1) Put on a safety harness:

WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

(a) Put on and attach the HARNESS, SAFETY before you start work in the work area.
(2) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(3) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(4) Remove the sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.

4. Procedure
Subtask 53-31-00-280-050-A

A. Inspection
(1) Do a special detailed inspection of the external surface of the longitudinal lap-joints upper-skin (crack stopper areas included). Do this inspection at left and right stringers 6 between FR35.8 and FR47 for damage and discontinuities NTM 533124.
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion:
If you find corrosion, refer to the Structural Repair Manual 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 SRM 511100 for the damage types, classification and corrective action.

Subtask 53-31-00-910-054-A

B. Sealant or Paint Application
(1) If the NTM procedure told you to remove the sealant and/or paint from the inspection area, apply sealant SRM 512400 or paint SRM 512300 on the inspection area.

5. Close-up
Subtask 53-31-00-410-151-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:29:04 UTC