Detailed Inspection of Cabin Floor Structure, below and 0.5 M around Galleys and Toilets, between FR 21 and FR 24

TASK 53-11-00-220-003-A
Detailed Inspection of Cabin Floor Structure, below and 0.5 M around Galleys and Toilets, between FR 21 and FR 24

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

ZONE: 221
ZONE: 222
ZONE: 231
ZONE: 232

1. Reason for the Job
Refer to the MPD TASK: 531194-01
DETAILED INSPECTION OF CABIN FLOOR STRUCTURE, BELOW AND 0.5M AROUND GALLEYS AND TOILETS, BETWEEN FR 21 AND FR 24

NOTE: This task is applicable if galleys or toilets are installed in this area.

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	PAPER - MASKING

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.12ADB1)	Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
221	FWD CAB UTILITY AREA
222	FWD CAB UTILITY AREA
231	FWD PASSENGER COMPARTMENT
232	FWD PASSENGER COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
TASK 51-78-00-916-001-A	Application of Temporary Protection System (TPS)
TASK 53-12-12-000-001-A	Removal of the Cabin Floor Panels from FR12 thru FR24
TASK 53-12-12-400-001-A	Installation of the Cabin Floor Panels from FR12 thru FR24
SRM 511100	(for corrective action)
SRM 512200	(for corrective action)
TASK 25-31-00-00	FORWARD GALLEY - DESCRIPTION AND OPERATION
TASK 25-41-00-00	FORWARD LAVATORIES - DESCRIPTION AND OPERATION
Floor Structure, FR21 to FR24

3. Job Set-up
Subtask 53-11-00-010-085-A

A. Get Access
(1) Remove the galleys and lavatories between FR21 and FR24.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-31-00-00), for the lavatories (Ref. AMM D/O 25-41-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.
(2) Remove the necessary cabin floor panels between FR21 and FR24 to get access to the inspection area (Ref. AMM TASK 53-12-12-000-001).

Subtask 53-11-00-110-099-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.
(2) If it is not, 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 Temporary Protection System (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. Procedure
Subtask 53-11-00-220-065-A

A. Inspection

Floor Structure, FR21 to FR24

(1) Do a detailed inspection of the cabin floor structure below and 0.5 M (19.685 in.) around the galleys and the lavatories. This inspection is applicable between FR21 and FR24.
(2) 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 other damage, refer to Structural Repair Manual SRM 511100 for damage classification and corrective action.

Subtask 53-11-00-916-059-A

B. Application of the Temporary Protection System

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.

CAUTION: DO NOT APPLY TEMPORARY PROTECTION SYSTEM (TPS) TYPE 3 ON THE MOVABLE COMPONENTS. USE ONLY TPS TYPE 1 GRADE 2. IF YOU DO NOT OBEY THIS INSTRUCTION, THE MECHANISMS WILL NOT OPERATE CORRECTLY.

(1) If there is a TPS layer, do a check of the condition 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. If, after the check, you think that the TPS layer is in the correct condition, you can apply a new layer as a spray on the existing layer.

(2) Apply PAPER - MASKING or Adhesive Film Tape-Masking - - (Material No.05RDA1) on the equipment and fittings adjacent to the area.
(3) If the TPS layer has local damage, remove the damaged TPS layer and apply a new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) on the inspection area (Ref. AMM TASK 51-78-00-916-001).
(4) If, before the inspection, there was:

Removal of the TPS layer or
Cleaning of the inspection area with high-pressure water, steam, solvents and/or cleaning agents

Apply a full new layer of Corrosion Preventive Compound-Water Displacing & Heavy Duty Hard Film - (Material No.12ADB1) on the inspection area (Ref. AMM TASK 51-78-00-916-001).
(5) Remove the PAPER - MASKING or the Adhesive Film Tape-Masking - - (Material No.05RDA1) .

5. Close-up
Subtask 53-11-00-410-085-A

A. Close Access
(1) Install the cabin floor panels between FR21 and FR24 (Ref. AMM TASK 53-12-12-400-001).
(2) Install the galleys and lavatories between FR21 and FR24.
To do this, refer to the para. Component Location in the applicable ATA 25 Description/Operation: for the galleys (Ref. AMM D/O 25-31-00-00), for the lavatories (Ref. AMM D/O 25-41-00-00). In this paragraph, you will find the cross-references of the removal/installation tasks.
(3) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.02 06:28:44 UTC