Repair of Sidewall Linings and Ceiling Panels

TASK 25-20-00-340-005-A
Repair of Sidewall Linings and Ceiling Panels

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	PAPER - ABRASIVE (GRADE 200)
No specific	1	PAPER - MASKING
No specific	1	SPATULA - NON METALLIC
No specific	1	SYRINGE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.05RDA1)	Adhesive Film Tape-Masking - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.13ACA1)	Dry glass fabric-4H Satin 293 gsm - 143 style - -
(Material No.13EBC1)	Laminating resin-Epoxy SRM Type 2 -
(Material No.13EBK1)	Laminating resin-Epoxy Fire compliant -
(Material No.13FBB2)	Paste Adhesive-Epoxy Composite General Use Structure
(Material No.13FGE3)	Paste Adhesive-- Filler Furnishing
(Material No.13GBB3)	Low density compound-Fire compliant Low temperature curing Furnishing
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-20-00-340-003-A	Repair/Replacement of Decor Foil
TASK 25-20-00-370-006-A	Repair of the Paint Coat on Components
Damage Type 2
Damage Type 3
Damage Type 4

3. Job Set-up
Subtask 25-20-00-860-054-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

4. Procedure
Subtask 25-20-00-210-050-A

A. Identification of the Damage Limits
(1) Damage type 1 (minor damage without crack in the surface):

The minimum allowed distance between the damage and the edge of the component is 50.80 mm (2.0 in.).
The minimum allowed distance between the damage and the brackets is 101.60 mm (4.0 in.).
The maximum allowed diameter of the damaged area is 10.16 mm (0.4 in.).
The maximum allowed number of defects on the panel is 10.
The maximum allowed number of defects in an area of 103.22 cm sq. (16.0 in. sq.) is 5.
The minimum allowed distance between the defects is 20.32 mm (0.8 in.).

(2) Damage type 2 (crack in the surface):

The minimum allowed distance between the damage and the edge of the component is 50.80 mm (2.0 in.).
The minimum allowed distance between the damage and the brackets is 101.60 mm (4.0 in.).
The maximum allowed length of the crack is 30.48 mm (1.2 in.).
The maximum allowed number of defects on the panel is 2.
The minimum allowed distance between the defects is 20.32 mm (0.8 in.).

(3) Damage type 3 (single-sided surface breakthrough with honeycomb damage):

The minimum allowed distance between the damage and the edge of the component is 50.80 mm (2.0 in.).
The minimum allowed distance between the damage and the brackets is 101.60 mm (4.0 in.).
The maximum allowed diameter of the damaged area is 30.48 mm (1.2 in.).
The maximum allowed number of defects on the panel is 2.
The minimum allowed distance between the defects is 60.96 mm (2.4 in.).

(4) Damage type 4 (single or double-sided surface breakthrough with honeycomb damage):

The minimum allowed distance between the damage and the edge of the component is 50.80 mm (2.0 in.).
The minimum allowed distance between the damage and the brackets is 101.60 mm (4.0 in.).
The maximum allowed diameter of the damaged area is 101.60 mm (4.0 in.).
The maximum allowed number of defects on the panel is 1.

Subtask 25-20-00-010-051-A

B. Preparation
(1) If necessary, remove the damaged lining(s).
(a) Refer to the applicable AMM procedure.

Subtask 25-20-00-340-059-A

C. Repair of Sidewall Linings and Ceiling Panels
(1) Repair the damage type 1:
(a) Apply PAPER - MASKING and Adhesive Film Tape-Masking - - (Material No.05RDA1) around the area that you want to repair.
(b) Carefully remove the decor layer from the damaged area:

Remove the foil (Ref. AMM TASK 25-20-00-340-003).
Remove the paint (Ref. AMM TASK 25-20-00-370-006).

(c) Clean the damaged area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(d) Use a SPATULA - NON METALLIC and apply Paste Adhesive-- Filler Furnishing (Material No.13FGE3) to the surface of the repair area.
(e) Let the filler cure.
(f) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(g) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(h) Apply the decor layer on the repaired area:

Apply the foil (Ref. AMM TASK 25-20-00-340-003).
Apply the paint (Ref. AMM TASK 25-20-00-370-006).

(2) Repair the damage type 2:

Damage Type 2

(a) Apply PAPER - MASKING and Adhesive Film Tape-Masking - - (Material No.05RDA1) around the area that you want to repair.
(b) Carefully remove the decor layer from the damaged area:

Remove the foil (Ref. AMM TASK 25-20-00-340-003).
Remove the paint (Ref. AMM TASK 25-20-00-370-006).

(c) Clean the damaged area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(d) Stop-drill the ends of the crack.
(e) Fill a SYRINGE with Laminating resin-Epoxy SRM Type 2 - (Material No.13EBC1) .
(f) Slowly put the resin (2) with the syringe through the crack into the honeycomb core.
(g) Stop the syringe when the resin comes out of the crack.
(h) Remove the unwanted resin with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(i) Let the resin cure.
(j) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(k) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(l) Use a SPATULA - NON METALLIC and apply Paste Adhesive-- Filler Furnishing (Material No.13FGE3) (1) to the surface of the repair area.
(m) Let the filler cure.
(n) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(o) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(p) Apply the decor layer on the repaired area:

Apply the foil (Ref. AMM TASK 25-20-00-340-003).
Apply the paint (Ref. AMM TASK 25-20-00-370-006).

(3) Repair the damage type 3:

Damage Type 3

(a) Apply PAPER - MASKING and Adhesive Film Tape-Masking - - (Material No.05RDA1) around the area that you want to repair.
(b) Carefully remove the decor layer from the damaged area:

Remove the foil (Ref. AMM TASK 25-20-00-340-003).
Remove the paint (Ref. AMM TASK 25-20-00-370-006).

(c) Clean the damaged area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(d) Cut out the prepreg layer to up to 10.16 mm (0.4 in.) over the edge of the damaged area.
(e) Cut out the damaged honeycomb core.
(f) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Fill the gap of the removed honeycomb core with Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3) (1).
(h) Let the filler cure.
(i) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(j) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(k) Apply a new top layer (2) on the repaired area:

NOTE: The overlap of the new layer can be up to 25.40 mm (1.0 in.).

NOTE: The minimum thickness of the new top layer is the thickness of the top layer which is used for this component.

Apply an aluminum or prepreg top layer with Paste Adhesive-Epoxy Composite General Use Structure (Material No.13FBB2)

NOTE: For this repair only 3M Scotch-Weld 2216 B/A is recommended.

Apply Dry glass fabric-4H Satin 293 gsm - 143 style - - (Material No.13ACA1) with Laminating resin-Epoxy Fire compliant - (Material No.13EBK1) .

(l) Let the core filler and the adhesive cure.
(m) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(n) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(o) Use a SPATULA - NON METALLIC and apply Paste Adhesive-- Filler Furnishing (Material No.13FGE3) to the surface of the repair area.
(p) Let the filler cure.
(q) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(r) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(s) Apply the decor layer on the repaired area:

Apply the foil (Ref. AMM TASK 25-20-00-340-003).
Apply the paint (Ref. AMM TASK 25-20-00-370-006).

(4) Repair the damage type 4:

Damage Type 4

(a) Apply PAPER - MASKING and Adhesive Film Tape-Masking - - (Material No.05RDA1) around the area that you want to repair.
(b) Carefully remove the decor layer from the damaged area:

Remove the foil (Ref. AMM TASK 25-20-00-340-003).
Remove the paint (Ref. AMM TASK 25-20-00-370-006).

(c) Clean the damaged area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(d) Cut out the prepreg layer:

On the front side of the panel over the edge of the damaged area
On the backside of the panel up to 25.40 mm (1.0 in.) over the edge of the damaged area.

(e) Cut out the damaged honeycomb core up to 25.40 mm (1.0 in.) over the edge of the damaged area.
(f) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Apply a new top layer (2) on the front side of the repaired area:

NOTE: The minimum thickness of the new top layer is the thickness of the top layer which is used for this component.

Apply an aluminum or prepreg top layer to the gap with Paste Adhesive-Epoxy Composite General Use Structure (Material No.13FBB2) .

NOTE: For this repair only 3M Scotch-Weld 2216 B/A is recommended.

Apply Dry glass fabric-4H Satin 293 gsm - 143 style - - (Material No.13ACA1) with Laminating resin-Epoxy Fire compliant - (Material No.13EBK1) to the gap.

(h) Fill the gap of the removed honeycomb core with Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3) (1).
(i) Apply a new top layer (3) on the back side of the repaired area:

NOTE: The overlap of the new layer can be up to 25.40 mm (1.0 in.).

NOTE: The minimum thickness of the new top layer is the thickness of the top layer which is used for this component.

Apply an aluminum or prepreg top layer with Paste Adhesive-Epoxy Composite General Use Structure (Material No.13FBB2)

NOTE: For this repair only 3M Scotch-Weld 2216 B/A is recommended.

Apply Dry glass fabric-4H Satin 293 gsm - 143 style - - (Material No.13ACA1) with Laminating resin-Epoxy Fire compliant - (Material No.13EBK1) .

(j) Let the core filler and the adhesive cure.
(k) Clean the surfaces with Non Aqueous Cleaner-General - - (Material No.08BAA9) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(l) Use a SPATULA - NON METALLIC and apply Paste Adhesive-- Filler Furnishing (Material No.13FGE3) (4) to the surface of the repair area.
(m) Let the filler cure.
(n) Make the repair area smooth with a PAPER - ABRASIVE (GRADE 200) or finer.
(o) Clean the surface with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
(p) Apply the decor layer on the repaired area:

Apply the foil (Ref. AMM TASK 25-20-00-340-003).
Apply the paint (Ref. AMM TASK 25-20-00-370-006).

Subtask 25-20-00-410-052-A

D. Put the aircraft back to its initial configuration.
(1) If removed, install the repaired panel(s).
(a) Refer to the applicable AMM procedure.
(2) Make sure that the work area is clean and clear of tools and other items.

5. Close-up
Subtask 25-20-00-860-055-A

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:30:04 UTC