DOC AIRBUS | AMM A320FPreservation of the Air Intake Cowl Lipskin [IAE]
TASK 71-11-11-620-802-A
Preservation of the Air Intake Cowl Lipskin
This procedure gives instructions to preserve the air intake cowl lipskin for parking or storage. Refer to ATA Chapters 10 and 71 for more information before you do this procedure.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 71-11-11-941-070-A ** ON A/C NOT FOR ALL
Subtask 71-11-11-620-055-A ** ON A/C NOT FOR ALL
(2) Make sure that you wipe clean all parts and tools as necessary to remove unwanted debris and prevent damage to the engine and adjacent components.
(3) Clean the surface of the air intake cowl lipskin:
(a) Clean the surface of the air intake cowl lipskin with a clean Textile-Lint free Cotton - (Material No.14SBA1) and theV01-031 acetone, technical grade
(b) Remove all the dust, dirt, unwanted material, oil, grease and moisture.
(c) Remove theV01-031 acetone, technical grade
(d) Make sure that the surface of the air intake cowl lipskin is clean, dry and water-break-free.
(4) Apply a mask on the air intake cowl lipskin:
(a) Apply the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the fasteners along the inner surface of the lipskin to help prevent the coating removal of the heads.
(b) Apply the vinyl duc tape (Material No.VU1-0118) to the edge of the inner surface of the lipskin and the sealant between the lipskin and the inner barrel.
1 Make sure that the vinyl duc tape (Material No.VU1-0118) fully covers the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) .
(c) Apply the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the hoist point fasteners to help prevent coating removal of the fastener heads.
(d) Apply the vinyl duc tape (Material No.VU1-0118) on the edge of the outer surface of the lipskin and the sealant between the lipskin and the outer barrel.
(e) Make sure that the vinyl duc tape (Material No.VU1-0118) covers all the fasteners on the lipskin:
1 Make sure that the vinyl duc tape (Material No.VU1-0118) fully covers the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the hoist point fasteners.
(f) Apply the vinyl duc tape (Material No.VU1-0118) to the exhaust vent near the holes at the bottom of the lipskin.
(g) Apply three layers of theV02-178 masking tape
1 Apply the second and the third layers with a small overlap of the layer before it.
(h) Install the COVER - PROTECTION on the fan blades and the adjacent components to provide protection from overspray.
(5) Apply the protective coating on the air intake cowl lipskin:
(a) Before you apply the basecoat and the topcoat, refer to the instructions of the manufacturer for application and recommended spray equipment.
(b) Spray a 0.004 in. (0.102 mm) layer of theVU4-0051 basecoat, peelable preservation
1 Spray theVU4-0051 basecoat, peelable preservation
2 Spray the outer edge of the lipskin first, then the inner edge.
(c) Remove the top layer of theV02-178 masking tape VU4-0051 basecoat, peelable preservation
(d) Let the layer dry for one hour.
(e) Apply a second layer of theVU4-0051 basecoat, peelable preservation
(f) Remove the second layer of theV02-178 masking tape VU4-0051 basecoat, peelable preservation
(g) Let the base coat dry until it loses its gloss.
(h) Apply a 0.002 in. (0.1 mm) layer of theVU4-0050 topcoat, water-borne preservation
(i) Remove theV02-178 masking tape
(j) Do not remove the tape on the exhaust holes, inner surface of the lipskin, outer surface of the lipskin or the hoist point fasteners.
(k) Let the protective coating fully cure. Refer to the instructions of the manufacturer.
(6) Examine the protective coating. Make sure that the protective coating is smooth, uniform and continuous.
(7) Continue with the preservation of the engine, nacelle and aircraft as necessary. Refer to ATA Chapters 10 and 71.
(8) Examine the protective coating every 24 hours for the first seven days.
(a) Make sure that the humidity is stable and there is no excessive moisture on the lipskin.
(9) After the first seven days, refer to ATA Chapters 10 and 71 for more inspection intervals.
5. Close-up
Subtask 71-11-11-410-063-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:28:44 UTC
Preservation of the Air Intake Cowl Lipskin
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis procedure gives instructions to preserve the air intake cowl lipskin for parking or storage. Refer to ATA Chapters 10 and 71 for more information before you do this procedure.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 2 | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | COVER - PROTECTION |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-031) | acetone, technical grade |
| masking tape | |
| (Material No.VU1-0118) | vinyl duc tape |
| (Material No.VU1-0119) | protective tape |
| (Material No.VU1-0120) | riveter tape |
| (Material No.VU10-0060) | spray equipment |
| (Material No.VU4-0050) | topcoat, water-borne preservation |
| (Material No.VU4-0051) | basecoat, peelable preservation |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 431 | ENGINE AIR INTAKE |
| 441 | ENGINE AIR INTAKE |
| REFERENCE | DESIGNATION |
|---|---|
Air Intake Cowl LipskinSubtask 71-11-11-941-070-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU, put a WARNING NOTICE(S) in position to tell persons not to start the engine 1(2).
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the overhead panel, on maintenance panel 50VU:
(a) Make sure that the ENG/FADEC GND PWR/1(2) pushbutton switch is released (the ON legend is off).
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
Subtask 71-11-11-010-069-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on ENG panel 115VU, put a WARNING NOTICE(S) in position to tell persons not to start the engine 1(2).
(2) Make sure that the engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On the overhead panel, on maintenance panel 50VU:
(a) Make sure that the ENG/FADEC GND PWR/1(2) pushbutton switch is released (the ON legend is off).
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position:
(a) FOR [1000EM1] (ENGINE-1)
At zone 431.
(b) FOR [1000EM2] (ENGINE-2)
At zone 441.
4. Procedure(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position:
(a) FOR [1000EM1] (ENGINE-1)
At zone 431.
(b) FOR [1000EM2] (ENGINE-2)
At zone 441.
Subtask 71-11-11-620-055-A ** ON A/C NOT FOR ALL
CAUTION:
DO NOT LET THE PROTECTIVE COATING DRY ON THE MASKING TAPE. IF THE PROTECTIVE COATING DRIES ON THE MASKING TAPE, DAMAGE TO THE PROTECTIVE COATING CAN OCCUR WHEN YOU REMOVE THE MASKING TAPE
A. Preservation of the Air Intake Cowl Lipskin for StorageNOTE: You can use this preservation coating for a maximum of six months.
(1) Make sure that you removed and installed all the COVER - PROTECTION as necessary to prevent damage to the engine and adjacent components.(2) Make sure that you wipe clean all parts and tools as necessary to remove unwanted debris and prevent damage to the engine and adjacent components.
(3) Clean the surface of the air intake cowl lipskin:
(a) Clean the surface of the air intake cowl lipskin with a clean Textile-Lint free Cotton - (Material No.14SBA1) and the
(b) Remove all the dust, dirt, unwanted material, oil, grease and moisture.
(c) Remove the
(d) Make sure that the surface of the air intake cowl lipskin is clean, dry and water-break-free.
(4) Apply a mask on the air intake cowl lipskin:
(a) Apply the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the fasteners along the inner surface of the lipskin to help prevent the coating removal of the heads.
(b) Apply the vinyl duc tape (Material No.VU1-0118) to the edge of the inner surface of the lipskin and the sealant between the lipskin and the inner barrel.
1 Make sure that the vinyl duc tape (Material No.VU1-0118) fully covers the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) .
(c) Apply the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the hoist point fasteners to help prevent coating removal of the fastener heads.
(d) Apply the vinyl duc tape (Material No.VU1-0118) on the edge of the outer surface of the lipskin and the sealant between the lipskin and the outer barrel.
(e) Make sure that the vinyl duc tape (Material No.VU1-0118) covers all the fasteners on the lipskin:
1 Make sure that the vinyl duc tape (Material No.VU1-0118) fully covers the protective tape (Material No.VU1-0119) or the riveter tape (Material No.VU1-0120) on the hoist point fasteners.
(f) Apply the vinyl duc tape (Material No.VU1-0118) to the exhaust vent near the holes at the bottom of the lipskin.
(g) Apply three layers of the
1 Apply the second and the third layers with a small overlap of the layer before it.
(h) Install the COVER - PROTECTION on the fan blades and the adjacent components to provide protection from overspray.
(5) Apply the protective coating on the air intake cowl lipskin:
(a) Before you apply the basecoat and the topcoat, refer to the instructions of the manufacturer for application and recommended spray equipment.
(b) Spray a 0.004 in. (0.102 mm) layer of the
1 Spray the
2 Spray the outer edge of the lipskin first, then the inner edge.
(c) Remove the top layer of the
(d) Let the layer dry for one hour.
(e) Apply a second layer of the
(f) Remove the second layer of the
(g) Let the base coat dry until it loses its gloss.
(h) Apply a 0.002 in. (0.1 mm) layer of the
(i) Remove the
(j) Do not remove the tape on the exhaust holes, inner surface of the lipskin, outer surface of the lipskin or the hoist point fasteners.
(k) Let the protective coating fully cure. Refer to the instructions of the manufacturer.
(6) Examine the protective coating. Make sure that the protective coating is smooth, uniform and continuous.
(7) Continue with the preservation of the engine, nacelle and aircraft as necessary. Refer to ATA Chapters 10 and 71.
(8) Examine the protective coating every 24 hours for the first seven days.
(a) Make sure that the humidity is stable and there is no excessive moisture on the lipskin.
(9) After the first seven days, refer to ATA Chapters 10 and 71 for more inspection intervals.
Subtask 71-11-11-410-063-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.
(3) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE.
(3) Remove the WARNING NOTICE(S).