W DOC AIRBUS | AMM A320F

Repair of Insert Nut Attachments in Components with Honeycomb Core

TASK 25-20-00-350-001-A
Repair of Insert Nut Attachments in Components with Honeycomb Core

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
2
CLOTH - ABRASIVE (GRADE 120-180)
No specific
1
SYRINGE
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.05EML7)
Epoxy Adhesive-- - Legacy 3
(Material No.05RDA1)
Adhesive Film Tape-Masking - -
(Material No.08BBD1)
Non Aqueous Cleaner-- Isopropyl Alcohol -
(Material No.13FGF3)
Paste Adhesive-- Core restoration 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 24-42-00-861-001-A
Energize the Ground Service Network from the External Power
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
F Metal Inserts in Honeycomb Core Panel
3. Job Set-up
Subtask 25-20-00-861-057-A ** ON A/C NOT FOR ALL
A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).
4. Procedure
Subtask 25-20-00-350-050-A ** ON A/C NOT FOR ALL
A. Repair of Standard Insert-Nut Attachments
F Metal Inserts in Honeycomb Core Panel ** ON A/C NOT FOR ALL
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
   (1) Prepare the repair area:
     (a) Carefully remove the damaged insert and/or the unwanted material from the component.
     (b) Deburr the edges with a CLOTH - ABRASIVE (GRADE 120-180).
     (c) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
     (d) Fill the repair area with:
  • Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3)
    or
  • Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3)
    or
  • Low density compound-Fire compliant Low temperature curing Furnishing (Material No.13GBB3) .
Obey the manufacturer's instructions.
     (e) When the adhesive is cured, use a CLOTH - ABRASIVE (GRADE 120-180) to make the repair area smooth.
     (f) Drill a hole into the filler. The hole must be:
  • 0.5 mm (0.0197 in.) longer than the length
  • 0.5 mm (0.0197 in.) wider than the flange diameter
    of the new insert.
     (g) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
   (2) Install the insert:
     (a) Install the new insert and hold it in position with the positioning washer (part of the new insert).
     (b) If the insert goes through the component, put Adhesive Film Tape-Masking - - (Material No.05RDA1) on the side opposite the positioning washer.
     (c) Use a SYRINGE and fill the area around the insert through the injection hole with Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) . When the area is full, the adhesive flows out of the overflow hole. Obey the manufacturer's instructions.
     (d) When the adhesive is cured, remove the positioning washer and, if necessary, the masking tape.
     (e) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
   (3) If necessary, do the repair of the decor foil (Ref. AMM TASK 25-20-00-340-003).
Subtask 25-20-00-350-051-A ** ON A/C NOT FOR ALL
B. Repair of Special Insert-Nut Attachments
F Metal Inserts in Honeycomb Core Panel ** ON A/C NOT FOR ALL
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
   (1) Prepare the repair area:
     (a) Carefull remove the damaged insert and/or the unwanted material from the component.
     (b) Deburr the edges with a CLOTH - ABRASIVE (GRADE 120-180).
     (c) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
     (d) Fill the repair area with Paste Adhesive-- Core restoration Furnishing (Material No.13FGF3) . Obey the manufacturer's instructions.
     (e) When the adhesive is cured, use a CLOTH - ABRASIVE (GRADE 120-180) to make the repair area smooth.
     (f) Drill a hole into the filler. The hole must be 0.5 mm (0.0197 in.) wider than the flange diameter of the new insert.
     (g) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
   (2) Install the insert:
     (a) Apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) to the mating surface of the new insert and put the insert in position.
     (b) Make sure that the surface of the insert is smooth and flush with the surface of the component.
     (c) If necessary, hold the insert in position with Adhesive Film Tape-Masking - - (Material No.05RDA1) .
     (d) When the adhesive is cured, remove the masking tape. Obey the manufacturer's instructions.
     (e) Clean the area with Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
   (3) If necessary, do the repair of the decor foil (Ref. AMM TASK 25-20-00-340-003).
   (4) Install the new screw (refer to the related IPC of the component).
5. Close-up
Subtask 25-20-00-862-057-A ** ON A/C NOT FOR ALL
A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
[Rev.10 from 2021] 2026.04.01 06:00:27 UTC
"Aviabrain" 2025