Detailed Inspection of Forward Face of the Rear Pressure Bulkhead above the Cabin Floor Level

TASK 53-51-00-210-008-A
Detailed Inspection of Forward Face of the Rear Pressure Bulkhead above the Cabin Floor Level

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

ZONE: 261
ZONE: 262

1. Reason for the Job
Refer to the MPD TASK: 535123-01
DETAILED INSPECTION OF REAR PRESSURE BULKHEAD, FORWARD FACE, ABOVE CABIN FLOOR LEVEL

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. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
261	AFT CABIN UTILITY AREA
262	AFT CABIN UTILITY AREA

C. Referenced Information

REFERENCE	DESIGNATION
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 535116	(for corrective action)
TASK 25-33-00-00	AFT GALLEY - DESCRIPTION AND OPERATION
TASK 25-43-00-00	AFT LAVATORIES - DESCRIPTION AND OPERATION
Forward Face of the Rear Pressure Bulkhead above Cabin Floor Level

3. Job Set-up
Subtask 53-51-00-010-079-A

A. Get Access
(1) Remove the galleys and/or the lavatories between FR68 and FR70. To do this, refer to the paragraph. Component Location in the applicable ATA 25 Description/Operation:

For the galleys (Ref. AMM D/O 25-33-00-00)
For the lavatories (Ref. AMM D/O 25-43-00-00).

In this paragraph, you will find the cross-references of the removal/installation tasks.
(2) Remove the insulation blankets from the rear pressure bulkhead (Ref. AMM TASK 25-80-00-000-001).

NOTE: Identify the insulation blankets for installation.

Subtask 53-51-00-110-056-A

B. Preparation of the inspection area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.

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

(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Remove the TPS layer, if it does not let you do a satisfactory inspection (Ref. AMM TASK 51-78-00-916-001).

4. Procedure
Subtask 53-51-00-210-061-A

A. Detailed Inspection
(1) Do a detailed inspection of the forward face of the rear pressure bulkhead for corrosion.

NOTE: It is not necessary to remove the velcro strips from the inspection area.

NOTE: If necessary, refer to the ASRM SRM 535116 for the correct repair procedure.

Subtask 53-51-00-916-053-A

B. Application of Temporary Protection System

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

CAUTION: DO NOT APPLY TEMPORARY PROTECTION ON THE OXYGEN SYSTEMS. MAKE SURE THAT THE TEMPORARY PROTECTION DOES NOT GET:

ON COMPOSITE PARTS, CONTROL CABLES, PULLEYS,TEFLON BEARINGS.
ON LUBRICATED SURFACES.
IN DRAIN VALVES OR OTHER ORIFICES.

TEMPORARY PROTECTION ON OR IN THESE PARTS CAN CAUSE DAMAGE.

(1) Apply masking paper or masking tape Adhesive Film Tape-Masking - - (Material No.05RDA1) on the equipment and fittings adjacent to the area.
(2) If there is a TPS layer, do a check of the condition and integrity of the TPS layer (Ref. AMM TASK 51-78-00-916-001).

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

(3) Replace the damaged TPS layer with a new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(4) If you used solvents, high-pressure water, steam and/or cleaning agents to clean the TPS layer:
(a) Apply a full new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(b) If there is no TPS layer, apply a new layer of TPS on the inspection area, as recommended in the MPD (Ref. AMM TASK 51-78-00-916-001).
(5) Remove the masking paper or the masking tape.

5. Close-up
Subtask 53-51-00-410-077-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation blankets to the rear pressure bulkhead (Ref. AMM TASK 25-80-00-400-001).
(3) Install the galleys and/or the lavatories between FR68 and FR70. To do this, refer to the paragraph. Component Location in the applicable ATA 25 Description/Operation:

For the galleys (Ref. AMM D/O 25-33-00-00)
For the lavatories (Ref. AMM D/O 25-43-00-00).

In this paragraph, you will find the cross-references of the removal/installation tasks.
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.02 06:29:27 UTC