Repair of the Seal at the Emergency Exit Doors

TASK 52-22-18-300-002-A
Repair of the Seal at the Emergency Exit Doors

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

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	1	BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN
No specific	2	CLAMPS
No specific	1	CLOTH-EMERY, VERY FINE
No specific	1	SPATULA - NON METALLIC

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06CED1)	Silicone Adhesive Sealant-Rubber & Plastic Bonding One part -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.08BPA1)	Non Aqueous Cleaner-Non structural use - -
(Material No.13XJA1)	Laminate Repair Patch-Pax Door Seal - -
(Material No.14HHB1)	Film-Rubber Bonding Polyester Foil -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 52-22-00-010-001-A	Opening of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-410-001-A	Closing of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-860-003-A	Special Precaution before Maintenance on the Door Damper and Emergency Operation Cylinder
TASK 52-22-00-860-004-A	Special Precaution after Maintenance on the Door Damper and Emergency Operation Cylinder
TASK 52-22-18-000-001-A	Removal of the Door Seal
TASK 52-22-18-400-001-A	Installation of the Door Seal

3. Job Set-up
Subtask 52-22-18-860-051-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Open the applicable emergency exit door (referred to as door) as required (Ref. AMM TASK 52-22-00-010-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position below the partly opened door.
(3) Make sure that you obey the special precaution for the door damper and emergency operation cylinder (Ref. AMM TASK 52-22-00-860-003).
(4) Remove the door seal (Ref. AMM TASK 52-22-18-000-001)

4. Procedure
Subtask 52-22-18-350-050-A ** ON A/C NOT FOR ALL

A. Repair of the Chafe Marks

NOTE: If the chafe marks are in the area where the door seal touches, replace the section (splice repair).

(1) Prepare the chafe mark with CLOTH-EMERY, VERY FINE.
(2) Carefully degrease the chafe mark with the Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the chafe mark with a SPATULA - NON METALLIC.
(4) Prevent a dust layer on the treated chafe marks during the Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) dry for a period of 10 to 12 hours.

Subtask 52-22-18-330-050-A ** ON A/C NOT FOR ALL

B. Repair of Small Cuts and Punctures

NOTE: A repair of the small cuts is only permitted if:

The cuts are not longer than 25.4 mm (1.0000 in.).
The cuts are not in the area where the door seal touches the emergency exit door.

A repair of the punctures is only permitted if:

The punctures are less than 6.4 mm (0.2520 in.) and the distance between each puncture is more than 25.4 mm (1.0000 in.).
There are not more than three punctures in a section of 200.0 mm (7.8740 in.) and no puncture in the area where the door seal touches the emergency exit door.

In all other conditions, prepare a splice repair of the door seal (refer to Para. 4.C. Repair of the Very Damaged Areas).

NOTE: A minimum of 24 hours is necessary to do this repair procedure.

(1) If less time is available, make sure that you replace the defective door seal with the new one (Ref. AMM TASK 52-22-18-000-001) and (Ref. AMM TASK 52-22-18-400-001).
(2) Drill stop holes with a diameter of 2.0 mm (0.0787 in.) at the ends of the cuts.
(3) Push the seal to open the cuts.
(4) Lightly rub the cuts or the punctures with the CLOTH-EMERY, VERY FINE.
(5) Carefully remove the first layer of replacement tissue from the door seal at a distance of 10.0 mm (0.3937 in.) around the cut.
(6) Carefully remove the grease from the repair area with Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(7) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) on the opposite surface of the cuts.
(8) Push and hold the edges of the cuts and punctures together.
(9) Let them dry for some minutes.
(10) Cut pieces of Laminate Repair Patch-Pax Door Seal - - (Material No.13XJA1) to put them on the cuts.
(11) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) on the repair area to fill the stop holes.
(12) Put the replacement tissue onto the repair area to make the repair area as smooth as the seal surface.
(13) Put a layer of Film-Rubber Bonding Polyester Foil - (Material No.14HHB1) on the repair area.
(14) Put the seal in the BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN.
(15) Compress the seal with the wooden bonding block and the CLAMPS.
(16) Let it dry for 24 hours.
(17) Remove the wooden bonding block, the clamps and the rubber bonding-polyester foil-film from the repair area of the seal.
(18) Lightly rub the repair area with the CLOTH-EMERY, VERY FINE to get a smooth seal surface.

Subtask 52-22-18-330-051-A ** ON A/C NOT FOR ALL

C. Repair of the Very Damaged Areas (Splice Repair)

NOTE: A minimum of 24 hours is necessary to do this repair procedure.

(1) If less time is available, make sure that you replace the defective door seal with the new one (Ref. AMM TASK 52-22-18-000-001) and (Ref. AMM TASK 52-22-18-400-001).
(2) Cut the seal at a minimum distance of 50.0 mm (1.9685 in.) from the next inflation hole to remove the damaged section of the seal.

NOTE: The minimum repair length of the section is:

For a straight section, 200.0 mm (7.8740 in.)
For a section with curves, 200.0 mm (7.8740 in.) measured from the edge of the corner.

(3) For the straight section and the section with curves, cut a section of the replacement seal with the same length as the removed section.
(4) Make sure that the replacement seal has the same quantity of inflation holes as the removed section.
(5) Carefully remove the first layer of replacement tissue from the ends of the seal and the replacement section on a length of 25.4 mm (1.0000 in.) (repair area).
(6) Lightly rub the repair area with the CLOTH-EMERY, FINE.
(7) Carefully remove the grease from the repair area with Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(8) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) on the ends of the seal and the replacement section.
(9) Make sure that the inflation holes of the replacement section are in the correct position:

CAUTION: MAKE SURE THAT THE DOOR SEAL IS INSTALLED IN THE CORRECT POSITION. IF IT IS NOT INSTALLED IN THE CORRECT POSITION, IT WILL NOT INFLATE CORRECTLY DURING FLIGHT.

(a) Make sure that the inflation holes of the replacement section are in the same position as the inflation holes of the remaining section.

NOTE: If the inflation holes are not installed in the correct position, the door seal cannot inflate correctly during the flight. This causes the cabin pressure to decrease and a disruption of the flight.

(10) Push and hold the ends of the replacement section and seal together.
(11) Let them dry for some minutes.
(12) Cut pieces of Laminate Repair Patch-Pax Door Seal - - (Material No.13XJA1) equal to the dimension of the repair area.
(13) Apply a layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) on the mating surface of the replacement tissue and the repair area.
(14) Wind the replacement tissue around the repair area.
(15) Apply a layer of Film-Rubber Bonding Polyester Foil - (Material No.14HHB1) on the repair area.
(16) Put the seal in the BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN.
(17) Compress the seal with the wooden bonding block and the CLAMPS.
(18) Let it dry for 24 hours.
(19) Remove the wooden bonding block, the clamps and the rubber bonding-polyester foil-film from the repair area of the seal.
(20) Lightly rub the repair area with the CLOTH-EMERY, VERY FINE to get a smooth seal surface.

5. Close-up
Subtask 52-22-18-860-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Installation the door seal (Ref. AMM TASK 52-22-18-400-001).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Obey the special precaution for the door damper and emergency operation cylinder (Ref. AMM TASK 52-22-00-860-004).
(4) Close the applicable door (Ref. AMM TASK 52-22-00-410-001).
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:27:41 UTC