Special Detailed Inspection (ROTO) of Holes at FR 35.2A between Stringer 22 and Stringer 23, LH/RH

TASK 53-21-00-250-808-A
Special Detailed Inspection (ROTO) of Holes at FR 35.2A between Stringer 22 and Stringer 23, LH/RH

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

CAUTION: DO NOT APPLY TEMPORARY PROTECTION SYSTEM (TPS) ON THE INSPECTION AREA. IF YOU APPLY TPS ON THE INSPECTION AREA, YOU CAN CAUSE DAMAGE TO THE AIRCRAFT.

ZONE: 230

1. Reason for the Job
Refer to the MPD TASK: 532201-01
SPECIAL DETAILED INSPECTION (ROTO) OF HOLES AT FR 35.2A BETWEEN STRINGER 22 AND STRINGER 23, LH/RH.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	FLASHLIGHT
No specific	AR	MIRROR - INSPECTION

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
230	FWD PASSENGER COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-44-000-001-A	Removal of the Lower Sidewall Panels (Dado Panels)
TASK 25-23-44-400-001-A	Installation of the Lower Sidewall Panels (Dado Panels)
TASK 25-80-00-000-001-A	Removal of the Insulation Blankets
TASK 25-80-00-400-001-A	Installation of the Insulation Blankets
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
SRM 512300
SRM 512400
NTM 532201
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Hole between Stringer 22 and Stringer 23 at FR35.2A, Left and Right Sides

3. Job Set-up
Subtask 53-21-00-010-126-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the necessary sidewall panels at FR35.2A to get access to the inspection area (Ref. AMM TASK 25-23-44-000-001).
(2) If necessary, move the wiring harness with their related supports away from the structure but do not disconnect them. This is to get access to the inspection area.
(3) Remove the necessary insulation blankets at FR35.2A to get access to the inspection area (Ref. AMM TASK 25-80-00-000-001).

Subtask 53-21-00-110-146-A ** ON A/C NOT FOR ALL

B. Preparation of the Inspection Area
(1) Remove the sealant and/or paint from the inspection area if this is necessary for the Non-destructive Testing Manual (NTM) task.
(2) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(3) If it is not sufficiently clean, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(4) Make sure that there is no TPS layer and if there is a TPS layer, remove it (Ref. AMM TASK 51-78-00-916-001).
(5) Use a FLASHLIGHT and a MIRROR - INSPECTION for the inspection, if necessary.

4. Procedure
Subtask 53-21-00-250-063-A ** ON A/C NOT FOR ALL

A. Inspection

Hole between Stringer 22 and Stringer 23 at FR35.2A, Left and Right Sides ** ON A/C NOT FOR ALL

(1) Do a special detailed inspection (ROTO) of the holes at FR35.2A for damage or discontinuities. This inspection is applicable between stringer 22 and stringer 23 on the left and right sides. Refer to the Non-destructive Testing Manual ( NTM 532201) task.
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:

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.

5. Close-up
Subtask 53-21-00-390-051-A ** ON A/C NOT FOR ALL

A. Sealant or Paint Application
(1) If the NTM procedure asked 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.

Subtask 53-21-00-410-120-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation blankets at FR35.2A (Ref. AMM TASK 25-80-00-400-001).
(3) If moved away, put the wiring harnesses with their related supports in their correct position on the structure.
(4) Install the sidewall panels at FR35.2A (Ref. AMM TASK 25-23-44-400-001).

[Rev.10 from 2021] 2026.04.02 06:28:59 UTC