Cleaning/Painting of the Emergency Exit Hatch

TASK 52-21-00-100-001-A
Cleaning/Painting of the Emergency Exit Hatch

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

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

1. Reason for the Job
To remove dirt or unwanted material from the structure and the components of the emergency exit hatch. To repair paint damage of the top coat.

NOTE: For repair of paint damage refer to 51-75-12-300-001.

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

REFERENCE	QTY	DESIGNATION
No specific	1	BRUSH - BRISTLED
No specific	1	BRUSH - BRISTLED, SOFT
No specific	1	CLOTH-EMERY (GRADE 320)
No specific	1	SCRAPER - NON METALLIC
No specific	1	TAPE - MASKING
No specific	1	VACUUM CLEANER
No specific	1	WATER - SOAPY SOLUTION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04DAB2)	Primer Epoxy Paint-- Corrosion Inhibiting Structure
(Material No.04JME4)	Top Coat Polyurethane_- Grey Internal Structure
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.10ABC1)	Surface Pretreatment-Light Alloys Chemical Conversion Yellow -
(Material No.12ABE2)	Corrosion Preventive Compound-Water Displacing Oily Film System
(Material No.12AGC2)	Corrosion Preventive Compound-- Soft Film System
(Material No.14CDB1)	Testing Medium-Fuel Leak Detection White Powder -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-47-000-001-A	Removal of the Lining from the Emergency Exit Hatches
TASK 25-23-47-400-001-A	Installation of the Lining on the Emergency Exit Hatches
TASK 52-21-11-000-001-A	Removal of the Emergency Exit Hatch
TASK 52-21-11-400-001-A	Installation of the Emergency Exit Hatch

3. Job Set-up
Subtask 52-21-00-010-056-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the emergency exit hatch (Ref. AMM TASK 52-21-11-000-001).
(2) Remove the hatch lining from the emergency exit hatch (Ref. AMM TASK 25-23-47-000-001).
(3) Carefully disengage the VELCRO tapes and remove the insulation packs.

4. Procedure
Subtask 52-21-00-160-050-A ** ON A/C NOT FOR ALL

A. Cleaning of the Hatch Structure
(1) Remove all loose particles and dirt with a VACUUM CLEANER and/or a dry BRUSH - BRISTLED
(2) Put TAPE - MASKING on the window and on the rollers around the hatch structure.
(3) Use a Textile-Lint free Cotton - (Material No.14SBA1) or a BRUSH - BRISTLED, SOFT and carefully clean the painted components of the hatch structure with Non Aqueous Cleaner-General - - (Material No.08BAA9) .

NOTE: Make sure that the cleaning agent does not dry on the surface.

(4) Dry the cleaned components with a dry and clean lint-free cloth or with dry, compressed air.
(5) Examine the drain holes to make sure that there is no blockage.
(6) Make sure that the corners and the recesses are free of all unwanted and loose material.
(7) Remove the masking material from the window and the rollers.
(8) Remove the remaining dirt and all old sealant with a SCRAPER - NON METALLIC.
(9) Apply Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the internal structure of the emergency exit hatch.
(10) Apply Corrosion Preventive Compound-- Soft Film System (Material No.12AGC2) to the outer side of the inside framing.

Subtask 52-21-00-140-050-A ** ON A/C NOT FOR ALL

B. Cleaning of the Hatch Seal
(1) Clean the hatch seal with a WATER - SOAPY SOLUTION
(2) Dry the cleaned hatch seal with a Textile-Lint free Cotton - (Material No.14SBA1) or with dry, compressed air.
(3) Apply Testing Medium-Fuel Leak Detection White Powder - (Material No.14CDB1) to the hatch seal.

Subtask 52-21-00-160-051-A ** ON A/C NOT FOR ALL

C. Cleaning of the Locking Mechanism
(1) Clean the locking hooks, the locking shaft, the hatch control handle and the connection rod with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Dry the cleaned components with dry and clean lint-free cloth.
(3) Clean the related bearings with a dry and clean lint-free cloth.
(4) Apply Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) to the cleaned components of the locking mechanism.

Subtask 52-21-00-370-050-A ** ON A/C NOT FOR ALL

D. Top Coat Repair
(1) Remove damage of the paint top coat with CLOTH-EMERY (GRADE 320)
(2) Make sure that the edge of the satisfactory paint top coat is feathered to the repair area.
(3) Put masking material to the adjacent area.
(4) Use a lint-free cloth and clean the repair area with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(5) Apply Surface Pretreatment-Light Alloys Chemical Conversion Yellow - (Material No.10ABC1) to the metal surface of the repair area.
(6) Apply Primer Epoxy Paint-- Corrosion Inhibiting Structure (Material No.04DAB2) to the repair area and let it dry.
(7) Apply Top Coat Polyurethane_- Grey Internal Structure (Material No.04JME4) to the primer and let it dry.
(8) Remove the masking material from the adjacent area.

Subtask 52-21-00-210-051-A ** ON A/C NOT FOR ALL

E. Visual Inspection of the Hatch Mechanism
(1) Operate the hatch control handle to make sure that the locking mechanism is is serviceable.
(2) Make sure that the slide release mechanism of the emergency exit hatch is serviceable.
(3) Make sure that the rollers around the hatch structure are serviceable and have a protection of Corrosion Preventive Compound-Water Displacing Oily Film System (Material No.12ABE2) .

5. Close-up
Subtask 52-21-00-410-058-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the insulation packs and attach the VELCRO tapes.
(3) Install the hatch lining to the emergency exit hatch (Ref. AMM TASK 25-23-47-400-001).
(4) Install the emergency exit hatch (Ref. AMM TASK 52-21-11-400-001).

[Rev.10 from 2021] 2026.04.02 07:22:33 UTC