Removal of the Emergency Exit Hatch

TASK 52-21-11-000-001-A
Removal of the Emergency Exit Hatch

WARNING: MAKE SURE THAT THE LOCK PIN IS CORRECTLY INSTALLED IN THE REGULATOR VALVE ASSEMBLY OF THE INFLATION RESERVOIR. THIS SAFETIES ALL COMPONENTS OF THE INFLATION SYSTEM IN OPERATION AND PREVENTS ACCIDENTAL:

DISCHARGE OF THE INFLATION RESERVOIR
DEPLOYMENT OF THE ESCAPE SLIDE

WHICH CAN CAUSE INJURY AND/OR DAMAGE.

WARNING: MAKE SURE THAT THE LATCH PIN IS RETRACTED IN THE DISARMED POSITION DURING THE REMOVAL AND INSTALLATION PROCEDURE. THIS PREVENTS AN ACCIDENTAL OPERATION OF THE ESCAPE SLIDE MECHANISM DURING THE REMOVAL/INSTALLATION.

WARNING: MAKE SURE THAT THE SAFETY PIN IS CORRECTLY INSTALLED IN THE HATCH FRAME IF THE EMERGENCY EXIT HATCH IS REMOVED. THIS PREVENTS AN ACCIDENTAL OPERATION OF THE ESCAPE SLIDE MECHANISM DURING THE MAINTENANCE.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

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

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
98D52207507000	1	PIN SET-EMERGENCY SLIDE,EMERGENCY EXITS
98D52207543000	1	DEVICE-SAFETY,EMERGENCY EXIT

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
833	EMERGENCY EXITS
834	EMERGENCY EXITS
843	EMERGENCY EXITS
844	EMERGENCY EXITS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 25-62-00-481-001-A	Special Precautions before Work on the Offwing Escape-Slide Systems
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 53-31-00-220-811-A	Detailed Inspection of the Emergency Exit Hatch-Frame (Internal)
TASK 53-31-00-440-802-A	Repair of the Filler Panels of the Emergency-Exit Hatch Frame
SRM 522200
Emergency Exit Hatch ** ON A/C NOT FOR ALL
Emergency Exit Hatch ** ON A/C NOT FOR ALL
Operation of the Emergency Exit Hatch ** ON A/C NOT FOR ALL
Operation of the Emergency Exit Hatch ** ON A/C NOT FOR ALL
Emergency Exit Hatch ** ON A/C NOT FOR ALL
Emergency Exit Hatch ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-21-11-860-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Open the FWD or the aft passenger/crew door (Ref. AMM TASK 52-10-00-010-001).
(2) Make sure that the pushbutton LIGHT EMER on the forward attendant panel 120RH (at the forward attendant station) is set to OFF.
(3) Make sure that all the switches are set to OFF on the SIGNS panel 25VU in the cockpit.
(4) Install the lockpin assembly on the inflation reservoir in the aft cargo-compartment to prevent the operation of the escape slides (Ref. AMM TASK 25-62-00-481-001).

Subtask 52-21-11-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H06
49VU	LIGHTING/EMER LT/CABIN	1WL	H05
122VU	LIGHTING/CABIN/EMER/LT	3WL	V07

4. Procedure
Subtask 52-21-11-860-058-A ** ON A/C NOT FOR ALL

A. To Disarm the Escape-Slide Release Mechanism

Emergency Exit Hatch ** ON A/C NOT FOR ALL

(1) Pull the cover flap down from the hatch and remove it.

NOTE: The white indicator light SLIDE ARMED in the cabin lining between the emergency exits comes on.

(2) Push the latch pin against the spring and turn it a quarter turn counterclockwise.
(3) Release the latch pin and make sure that it is retracted in its fully DISARMED position.

NOTE: The white indicator light SLIDE ARMED goes off.

Subtask 52-21-11-010-058-A ** ON A/C NOT FOR ALL

B. Removal of the Emergency Exit Hatch

Emergency Exit Hatch ** ON A/C NOT FOR ALL

Operation of the Emergency Exit Hatch ** ON A/C NOT FOR ALL

NOTE: If you remove more than one hatch, make a temporary mark on each hatch to identify its initial position.

(1) Pull the pull lever of the hatch control handle down and hold the hatch in position.

NOTE: The spring-loaded linkage cause a blockage of the pull lever in its lower overcenter position.

(2) Put the 98D52207543000 DEVICE-SAFETY,EMERGENCY EXIT onto the linkage to make sure that the blockage of the pull lever is set to off (during maintenance).
(3) Carefully lower the top of the hatch to the inner side until it comes clear of the cabin lining.
(4) Hold the lower handle of the lining with your free hand and pull the emergency exit hatch from the recess.
(5) Lift the hatch, pull it away from the opening and put it in the related fixture.
(6) Install the 98D52207507000 PIN SET-EMERGENCY SLIDE,EMERGENCY EXITS on the release lever to prevent an accidental operation of the escape-slide release mechanism.

Emergency Exit Hatch ** ON A/C NOT FOR ALL

5. Close-up
Subtask 52-21-11-220-052-A ** ON A/C NOT FOR ALL

A. Detailed Inspection of the Emergency Exit Hatch-Frame
(1) Do a detailed inspection of the emergency exit hatch-frame (Ref. AMM TASK 53-31-00-220-811).
(2) If the filler panels are damaged, restore them (Ref. AMM TASK 53-31-00-440-802).

Subtask 52-21-11-210-054-A ** ON A/C NOT FOR ALL

B. Visual Inspection of the Hatch Structure
(1) Examine the formed edge curves of the hatch structure for chafe marks.
(2) If necessary, repair the chafe marks SRM 522200.

[Rev.10 from 2021] 2026.04.01 03:54:58 UTC