Special Detailed Inspection (ROTO) of Holes at FR 24 - FR 34 between Stringer 33 and Stringer 39 (LH only) in Cargo Floor Area

TASK 53-21-00-250-802-A
Special Detailed Inspection (ROTO) of Holes at FR 24 - FR 34 between Stringer 33 and Stringer 39 (LH only) in Cargo Floor Area

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

ZONE: 133
ZONE: 134

1. Reason for the Job
Refer to the MPD TASK: 532209-01.
SPECIAL DETAILED INSPECTION (ROTO) OF HOLES AT FR 24

NOTE: This task is an alternative to task 532209-02.

NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability.
The information on weight variant groups is given in the MPD and SRM introductions.

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
No specific	AR	MIRROR - INSPECTION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ABC1)	Corrosion Preventive Compound_Water Displacing Soft Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
133	BAY UNDER FWD CAR COMPT FLOOR
134	BAY UNDER FWD CAR COMPT FLOOR
825

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
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)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 53-22-14-000-001-A	Removal of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A	Installation of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A-01	Installation of the Forward Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option)
SRM 514200
NTM 532209
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
Holes at FR24 to FR34 between Stringer 33 and Stringer 39 (Left Side Only) in the Cargo Floor Area ** ON A/C NOT FOR ALL
Holes at FR24 to FR34 between Stringer 33 and Stringer 39 (Left Side Only) in the Cargo Floor Area ** ON A/C NOT FOR ALL
Holes at FR24 to FR34 between Stringer 33 and Stringer 39 (Left Side Only) in the Cargo Floor Area ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 53-21-00-010-117-A

A. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 132.
(2) Open the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the necessary sidewall panels between FR24 and FR34 to get access to the inspection areas (Ref. AMM TASK 25-54-12-000-003).
(4) Remove the necessary forward cargo-compartment floor-panels between FR24 and FR34 to get access to the inspection areas (Ref. AMM TASK 53-22-14-000-001).
(5) Remove the necessary insulation blankets between FR24 and FR34 to get access to the inspection areas (Ref. AMM TASK 25-80-00-000-001).

Subtask 53-21-00-020-059-A

B. Removal of the components
(1) Remove the fasteners to inspect the holes. Refer to the Structural Repair Manual ( SRM 514200).

NOTE: Some holes do not have fasteners. They are only used during the final assembly-line process to get access to tools.

Subtask 53-21-00-110-138-A

C. 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 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) .
(3) If there is a TPS layer and if it does not let you do a satisfactory inspection, remove the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(4) Use a FLASHLIGHT and a MIRROR - INSPECTION for the inspection, if necessary.

4. Procedure
Subtask 53-21-00-250-058-A

A. Inspection

Holes at FR24 to FR34 between Stringer 33 and Stringer 39 (Left Side Only) in the Cargo Floor Area ** ON A/C NOT FOR ALL

(1) Do a special detailed inspection (ROTO) of the holes at FR24 to FR34 in the cargo floor area for damage or discontinuities. This inspection is applicable between stringer 33 and stringer 39 (left side only). Refer to the Non-destructive Testing Manual ( NTM 532209).
(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.

Subtask 53-21-00-916-076-A

B. Check and Application of the TPS Layer
(1) If the TPS was removed at the "Preparation of the Inspection Area", apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).
(2) If the TPS was not removed at the "Preparation of the Inspection Area", do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001).
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound_Water Displacing Soft Film - (Material No.12ABC1) (Ref. AMM TASK 51-78-00-916-001).

NOTE: If, after the check of the condition and integrity, the TPS layer is in the correct condition, Airbus recommends that you apply a new layer as a spray on the existing layer. This is to make sure that the TPS layer continues to give satisfactory corrosion protection.

5. Close-up
Subtask 53-21-00-420-058-A

A. Installation of the Components
(1) Refer to the installation drawing in the SRM identification section for the new fastener references.
(2) Install the fasteners of the inspected holes. Refer to the Structural Repair Manual ( SRM 514200).

Subtask 53-21-00-410-111-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation blankets between FR24 and FR34 (Ref. AMM TASK 25-80-00-400-001).
(3) Install the forward cargo-compartment floor-panels between FR24 and FR34 (Ref. AMM TASK 53-22-14-400-001).
(4) Install the sidewall panels between FR24 and FR34 (Ref. AMM TASK 25-54-12-400-003).
(5) Close the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(6) Remove the access platform(s).

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