DOC AIRBUS | AMM A320FRepair of the Missing Screw on the Intermediate Structure Rear Fairing - VRS1937 [IAE]
TASK 72-32-86-300-010-A
Repair of the Missing Screw on the Intermediate Structure Rear Fairing - VRS1937
1. Reason for the Job
This TASK is for V2500-A5 engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-32-86-941-056-A ** ON A/C NOT FOR ALL
Subtask 72-32-86-360-051-A ** ON A/C NOT FOR ALL
Subtask 72-32-86-942-054-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:45:46 UTC
Repair of the Missing Screw on the Intermediate Structure Rear Fairing - VRS1937
1. Reason for the Job
This TASK is for V2500-A5 engines.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 3M (10 FT) |
| No specific | AR | BRUSH - BRISTLED, SOFT |
| No specific | 1 | HOT AIR SOURCE |
| No specific | 1 | MACHINE - DRILLING |
| No specific | AR | MAT - WORK |
| No specific | 1 | PAINTBRUSH |
| No specific | AR | SPATULA - NON METALLIC |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-124) | Isopropyl Alcohol, Technical grade |
| (Material No.V01-275) | chromate conversion coating |
| (Material No.V01-338) | Cleaning solvent |
| (Material No.V05-019) | Waterproof silicon carbide abrasive paper |
| (Material No.V05-020) | waterproof silicon carbide |
| (Material No.V08-013) | cold curing silicone |
| (Material No.V08-014) | primer |
| (Material No.V08-045) | silicone rubber compound |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-32-86-200-010-A | Inspection of the Rear Fairing Assembly |
Repair Details and DimensionsSubtask 72-32-86-941-056-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 72-32-86-941-057-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Put the Support Equipment into Position
(1) Put the ACCESS PLATFORM 3M (10 FT) into position to give access to the engine for the inspection.
(2) Put the MAT - WORK into position in the air intake cowl.
4. Procedure(1) Put the ACCESS PLATFORM 3M (10 FT) into position to give access to the engine for the inspection.
(2) Put the MAT - WORK into position in the air intake cowl.
NOTE: Make sure that the red warning pennants of the workmat can be seen externally of the aircraft. Make sure that the workmat has sufficient dimensions to give full protection to the lower half of the fan case surface.
Subtask 72-32-86-360-051-A ** ON A/C NOT FOR ALL
A. Repair of the Intermediate Structure Rear Fairing
(1) If no screw is seized or self-rotating, go to the step (3).
(2) If any screws are seized or self-rotating, do as follows:
(b) Drill out the seized or self-rotating screws from the rear fairing. Use a MACHINE - DRILLING of diameter less than that of the screws.
(c) Examine whether the anchor nut is in the correct position. If the nut is loose or not in the correct position, remove it.
(d) Examine whether the anchor nuts have dropped off from the bleed duct and fall into the engine inside. If the nuts are missing, make sure they are removed from the engine inside.
(e) Remove the mask.
(3) Remove the dimple washer on the screw hole to be repaired.
(4) Remove all remaining adhesive on screw hole. Use Waterproof silicon carbide abrasive paper (Material No.V05-019) and waterproof silicon carbide (Material No.V05-020) (Ref. AMM TASK 72-32-86-200-010).
PRE SBE 70-0381
(5) Remove grease from the treatment area with a wipe andV01-124 Isopropyl Alcohol, Technical grade
(6) Apply chromate conversion coating (Material No.V01-275) to the repaired surfaces. Use a PAINTBRUSH to apply the conversion brushing solution until the surface becomes an iridescent gold to a light golden-brown color. The change in color takes approximately two to seven minutes.
(7) Flush the area with clean, cold water.
(8) Dry the area with a HOT AIR SOURCE or with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
END OF PRE SBE 70-0381
(9) Clean the repaired surface. Use a Textile-Lint free Cotton - (Material No.14SBA1) or a BRUSH - BRISTLED, SOFT made moist withV01-124 Isopropyl Alcohol, Technical grade
(10) Apply a thin layer of primer (Material No.V08-014) with a soft brush to the screw hole. Air dry for 30 minutes minimum.
(a) Fill the hole with silicone compound from the nozzle of the compound tube.
(b) Press the silicone compound into the hole with a SPATULA - NON METALLIC.
(13) Identify the repair:
(a) A log entry is necessary when you have completed this repair. Write VRS1937 in the engine log book.
(b) At the next shop visit, the rear fairing and missing screw must be repaired.
5. Close-up(1) If no screw is seized or self-rotating, go to the step (3).
(2) If any screws are seized or self-rotating, do as follows:
CAUTION:
BE CAREFUL NOT TO CAUSE DAMAGE TO THE PARENT MATERIAL AND THE ATTACHMENT LUG OF THE BLEED DUCT.
CAUTION:
DO NOT LET METAL PARTICLES AND BROKEN NUTS/SCREWS FALL INTO THE ENGINE. IF YOU DO, DAMAGE TO THE ENGINE CAN OCCUR.
(a) Mask the opening port of bleed duct around the repaired area in order to prevent from the metal particles and broken nut/screw. (b) Drill out the seized or self-rotating screws from the rear fairing. Use a MACHINE - DRILLING of diameter less than that of the screws.
(c) Examine whether the anchor nut is in the correct position. If the nut is loose or not in the correct position, remove it.
(d) Examine whether the anchor nuts have dropped off from the bleed duct and fall into the engine inside. If the nuts are missing, make sure they are removed from the engine inside.
(e) Remove the mask.
(3) Remove the dimple washer on the screw hole to be repaired.
(4) Remove all remaining adhesive on screw hole. Use Waterproof silicon carbide abrasive paper (Material No.V05-019) and waterproof silicon carbide (Material No.V05-020) (Ref. AMM TASK 72-32-86-200-010).
PRE SBE 70-0381
(5) Remove grease from the treatment area with a wipe and
(6) Apply chromate conversion coating (Material No.V01-275) to the repaired surfaces. Use a PAINTBRUSH to apply the conversion brushing solution until the surface becomes an iridescent gold to a light golden-brown color. The change in color takes approximately two to seven minutes.
(7) Flush the area with clean, cold water.
(8) Dry the area with a HOT AIR SOURCE or with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
END OF PRE SBE 70-0381
(9) Clean the repaired surface. Use a Textile-Lint free Cotton - (Material No.14SBA1) or a BRUSH - BRISTLED, SOFT made moist with
(10) Apply a thin layer of primer (Material No.V08-014) with a soft brush to the screw hole. Air dry for 30 minutes minimum.
NOTE: Apply the primer in less than eight hours after the surface is cleaned.
(11) Fill and press cold curing silicone (Material No.V08-013) or silicone rubber compound (Material No.V08-045) into the hole. (a) Fill the hole with silicone compound from the nozzle of the compound tube.
(b) Press the silicone compound into the hole with a SPATULA - NON METALLIC.
NOTE: Press the silicone compound into a hole immediately after it is applied to the hole.
(12) Cure the silicone compound for four hours at a temperature between 69 deg.F (21 deg.C) and 77 deg.F (25 deg.C). Do not apply load during this time. (13) Identify the repair:
(a) A log entry is necessary when you have completed this repair. Write VRS1937 in the engine log book.
(b) At the next shop visit, the rear fairing and missing screw must be repaired.
Subtask 72-32-86-942-054-A ** ON A/C NOT FOR ALL
A. Removal of the Support Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the workmat.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the workmat.
(3) Remove the WARNING NOTICE(S).
(4) Remove the access platform(s).