Patch and Filler Repair Method (Damage Not Through) - All Cargo Compartment Linings with Honeycomb Core

TASK 25-50-00-340-004-A
Patch and Filler Repair Method (Damage Not 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
CC Honeycomb Linings, Filler and Patches (AKRO 300) - Damage Not Through

3. Job Set-up
Subtask 25-50-00-010-098-A

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

4. Procedure
Subtask 25-50-00-220-050-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 Textile-Lint free Cotton - (Material No.14SBA1) . If the panel is painted, the applied paint dissolves.
(3) If the length of a damaged area is more than 25 mm (0.98 in.):

the minimum distance to another damaged area or repaired area in the same panel is 50 mm (1.97 in.)
If the distance to another damaged area is less than 50 mm (1.97 in.), both damaged areas should be considered as a single damage.

(4) 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 25-50-00-340-051-A

B. Repair of Cargo Compartment Lining(s) with Patch and Filler.

CC Honeycomb Linings, Filler and Patches (AKRO 300) - Damage Not Through

Use

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) .

NOTE: If the damage exceeds the dimension of the biggest repair patch, it is allowed to overlap patches in one direction only.
Make sure that the minimum overlap width is 6.4 mm (0.25 in.).

(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 patch(es).

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

(3) Make the repair 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 Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Fill the Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3) into the prepared area.

NOTE: Obey the manufacturer's instructions.

(7) Perform the further work-steps necessary to complete the repair according to the manufacturer's instructions delivered with the repair kit(s).
(8) Make sure that:

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

5. Close-up
Subtask 25-50-00-410-091-A

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

[Rev.10 from 2021] 2026.04.01 06:24:17 UTC