Patches and Filler Repair Method (Damage Through) - All Cargo Compartment Linings with Honeycomb Core

TASK 25-50-00-340-008-A
Patches and Filler Repair Method (Damage Through) - All Cargo Compartment Linings with Honeycomb Core

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

ZONE: 130
ZONE: 150
ZONE: 160

1. Reason for the Job
Refer to the AMM task 25-50-00-200-024
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CLOTH - ABRASIVE (GRADE 120-180)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BBD1)	Non Aqueous Cleaner-- Isopropyl Alcohol -
(Material No.13GBB3)	Low density compound-Fire compliant Low temperature curing Furnishing
(Material No.13XEA4)	Laminate Repair Patch-Wet Lay up Epoxy 4" x 4" Cargo
(Material No.13XEB4)	Laminate Repair Patch-Wet Lay up Epoxy 4" x 8" Cargo
(Material No.13XEC4)	Laminate Repair Patch-Wet Lay up Epoxy 8" x 8" Cargo
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT

D. Referenced Information

REFERENCE	DESIGNATION
TASK 25-50-00-200-024-A	Cargo Compartment Linings with Honeycomb Core - General Repair/Protection Information
TASK 25-50-00-370-001-A	Refurbishment of Cargo Compartment Linings

3. Job Set-up
Subtask 25-50-00-010-107-A

A. Get Access
(Ref. AMM TASK 25-50-00-200-024)

4. Procedure
Subtask 25-50-00-220-058-A

A. Identification of the Damage Area
(Ref. AMM TASK 25-50-00-200-024)
(1) If the damaged panel is painted (refurbished in accordance to (Ref. AMM TASK 25-50-00-370-001))), remove the paint in the affected area before applying the repair procedure.
(2) To identify the surface of the damaged panel use Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) . If the panel is painted, the applied paint dissolves.
(3) Select the appropriate repair kit.

Laminate Repair Patch-Wet Lay up Epoxy 4" x 4" Cargo (Material No.13XEA4)
or
Laminate Repair Patch-Wet Lay up Epoxy 4" x 8" Cargo (Material No.13XEB4)
or

Laminate Repair Patch-Wet Lay up Epoxy 8" x 8" Cargo (Material No.13XEC4)

!------------------------------------!---------------------------------------!

! Mat.-No.: ! Damage length: ! Damage width: !

!------------------------------------!---------------------------------------!

!08-075(Akro Fireguard Patch, small) ! 50.8 mm (2.0 in.) ! 50.8 mm (2.0 in.) !

!------------------------------------!---------------------------------------!

!08-076(Akro Fireguard Patch, medium)! 50.8 mm (2.0 in.) ! 152 mm (6.0 in.) !

!------------------------------------!---------------------------------------!

!08-077(Akro Fireguard Patch, large) ! 152 mm (6.0 in.) ! 152 mm (6.0 in.) !

!------------------------------------!---------------------------------------!

NOTE: The repair patch must overlap the damaged area 25.4 mm (1.00 in.) minimum in all directions

Subtask 25-50-00-340-063-A

B. Repair of the Lining(s) with Patches and Filler

NOTE: It is not allowed to overlap patches.

NOTE: If the lining panel has a aluminium or titanium cover sheet installed, the repair patch on the view side of the panel should not overlap the cover sheet.

(1) Carefully remove the damaged material from the lining panel.
(2) If necessary remove a portion of the layers of TELDAR film from the repair area at least as large as the used patches.

NOTE: The lining panel has a TELDAR film if the resin below the white film is of a different color.

(3) Make the repair area smooth with a CLOTH - ABRASIVE (GRADE 120-180) and make sure that all the gloss finish is removed.
(4) Remove the grit and dust from the repair area with the towel supplied in the repair kit(s).
(5) Clean the repair area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Install the repair patch

Laminate Repair Patch-Wet Lay up Epoxy 4" x 4" Cargo (Material No.13XEA4)
or
Laminate Repair Patch-Wet Lay up Epoxy 4" x 8" Cargo (Material No.13XEB4)
or
Laminate Repair Patch-Wet Lay up Epoxy 8" x 8" Cargo (Material No.13XEC4) .

(a) Install the repair patch on one side of the damaged panel.
(b) Perform the further work-steps necessary to complete the repair according to the manufacturer's instructions delivered with the repair kit.
(c) Make sure that:

The repair patch overlap the damaged area 25.4 mm (1.00 in.) minimum in all directions
The reinforcement scrim overlap the repair patch 25.4 mm (1.00 in.) minimum in all directions.

(d) Fill the material Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3) into the prepared area.

NOTE: Obey the manufacturer's instructions.

(e) Install the repair patch on the other side of the damaged panel.
(f) Perform the further work-steps necessary to complete the repair according to the manufacturer's instructions delivered with the repair kit.
(g) Make sure that:

The repair patch overlap the damaged area 25.4 mm (1.00 in.) minimum in all directions
The reinforcement scrim overlap the repair patch 25.4 mm (1.00 in.) minimum in all directions.

5. Close-up
Subtask 25-50-00-410-100-A

A. Close Access
(Ref. AMM TASK 25-50-00-200-024)

[Rev.10 from 2021] 2026.03.31 23:37:21 UTC