Replacement of the Hatch Seal

TASK 52-21-18-960-003-A
Replacement of the Hatch Seal

ZONE: 240
ZONE: 833
ZONE: 834
ZONE: 843
ZONE: 844

1. Reason for the Job

NOTE: This task can contribute to fuel savings.

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

REFERENCE	QTY	DESIGNATION
No specific	1	SCRAPER - PLASTIC
No specific	1	SCRAPER - WOODEN

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14CDB1)	Testing Medium-Fuel Leak Detection White Powder -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
240	MID PASSENGER COMPARTMENT
833	EMERGENCY EXITS
834	EMERGENCY EXITS
843	EMERGENCY EXITS
844	EMERGENCY EXITS

D. Referenced Information

REFERENCE	DESIGNATION
TASK 52-21-00-100-001-A	Cleaning/Painting of the Emergency Exit Hatch
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
Hatch Seal ** ON A/C NOT FOR ALL
Hatch Seal ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-21-18-010-051-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Remove the applicable emergency exit hatch (Ref. AMM TASK 52-21-11-000-001).

4. Procedure
Subtask 52-21-18-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Hatch Seal of the Emergency Exit Hatch
(1) Remove the hatch seal (1) as follows:
(a) Carefully pull the hatch seal (1) out of the seal retainer (3).

Subtask 52-21-18-210-051-A ** ON A/C NOT FOR ALL

B. Check of the Seal Retainer
(1) Do a visual check of the seal retainer (3) and make sure that it is clean and in the correct condition.

Subtask 52-21-18-420-051-B ** ON A/C NOT FOR ALL

C. Installation of the Hatch Seal of the Emergency Exit Hatch
(1) Install the hatch seal (1) as follows:
(a) Clean the adjacent area of the hatch seal (1) (Ref. AMM TASK 52-21-00-100-001).
(b) Apply Testing Medium-Fuel Leak Detection White Powder - (Material No.14CDB1) on the hatch seal (1).
(c) Put the hatch seal (1) in the correct position on the emergency exit hatch (2).

NOTE: The hatch seal (1) is in the correct position when the thicker profile is at the bottom of the emergency exit hatch (2).

(d) Push the hatch seal (1) into the seal retainer (3) with the SCRAPER - PLASTIC or the SCRAPER - WOODEN. Do not install the hatch seal (1) with a sharp tool.

5. Close-up
Subtask 52-21-18-410-051-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 applicable emergency exit hatch (Ref. AMM TASK 52-21-11-400-001).
(3) Make sure that the lip of the hatch seal is in the correct position.

[Rev.10 from 2021] 2026.04.02 06:27:35 UTC