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

TASK 25-50-00-340-009-A
Speed Patch 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.13XBD4)	Laminate Repair Patch-Cured - Fire compliant Intumescent 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
CC Honeycomb Linings, Patch - Damage Not Through

3. Job Set-up
Subtask 25-50-00-010-102-A

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

4. Procedure
Subtask 25-50-00-220-053-A

A. Preparation of the Damaged Area
(1) Identify the damage limits (Ref. AMM TASK 25-50-00-200-024):
(a) The minimum distance between the damaged areas in the same panel must be 76.20 mm (3.0000 in.). If it is less than 76.20 mm (3.0000 in.), you must think of the two damaged areas as one damage.
(b) The minimum distance between the damaged area and the repaired area in the same panel must be 38.10 mm (1.5000 in.).
(c) The minimum distance between the damaged area and the edges with and without milling must be 38.10 mm (1.5000 in.).
(d) The minimum distance between the damaged area and the milling of the cutouts for the decompression panels must be 38.10 mm (1.5000 in.).
(e) The minimum distance between the damaged area and the edges of the cutouts must be 38.10 mm (1.5000 in.).
(2) If the damaged panel is painted, remove the paint from the damaged area before you do the repair procedure. Use Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) to remove the paint from the surface of the damaged area.
(3) Use Laminate Repair Patch-Cured - Fire compliant Intumescent Cargo (Material No.13XBD4) on the damaged areas.

Subtask 25-50-00-340-058-A

B. Repair of the damaged area

CC Honeycomb Linings, Patch - Damage Not Through

(1) Remove the damaged material from the lining panel.
(2) Make the damaged area smooth with a CLOTH - ABRASIVE (GRADE 120-180).
(3) Clean the repair area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(4) Make sure that the repair area is dry.
(5) Use Laminate Repair Patch-Cured - Fire compliant Intumescent Cargo (Material No.13XBD4) on the damaged areas.
(6) Cut the repair patch to the applicable dimensions and obey these precautions:

Make sure that the repair patch is between 38.10 mm (1.5000 in.) and 50.80 mm (2.0000 in.) larger than the damaged area in all directions
Make sure that the repair patch touches the panel edge if the prepared area has an attachment hole
If the prepared area has an attachment hole that is not at the panel edge, make sure that the repair patch has a minimum overlap with the attachment holes of 15.20 mm (0.5984 in.) in all directions
To prevent delamination and sharp edges, make a radius of 10.20 mm (0.4016 in.) to 15.20 mm (0.5984 in.) on each corner of the patch(es).
Make sure that the repair patches do not make an overlap.

(7) Make the edges of the repair patch smooth with a CLOTH - ABRASIVE (GRADE 120-180).
(8) Remove the protective backing from the repair patch.
(9) Put the repair patch in position on the prepared area and make sure that:

In each direction, the repair patch is a minimum of 38.10 mm (1.5000 in.) larger than the damaged area.
There is no overlap between the repair patch and the other repaired areas.

(10) If the repair patch is on one or more attachment hole(s):
(a) Drill new holes at the same positions and with the same dimensions as the initial holes.
(b) Do a check of the grip range of the related fastener. If necessary, replace the fastener with the correct grip range.
(11) Clean the repair area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(12) Make sure that the repair area is dry.

5. Close-up
Subtask 25-50-00-410-095-A

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

[Rev.10 from 2021] 2026.03.31 23:37:22 UTC