DOC AIRBUS | AMM A320FReplace the Loose or Damaged Rivets of the Lipskin Inner Surface - VRS2746 [IAE]
TASK 71-11-11-300-015-A
Replace the Loose or Damaged Rivets of the Lipskin Inner Surface - VRS2746
This TASK gives the procedure to replace loose or damaged rivets on the lipskin inner surface.
The replacement rivet is a blind cherrylock or cherrymax type. An oversize cherrymax rivet can be used if required.
There is no limit to the number of rivets which can be replaced. Make sure the rivet hole has a minimum edge distance of 1.6d
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 71-11-11-941-063-A ** ON A/C NOT FOR ALL
Subtask 71-11-11-110-062-A ** ON A/C NOT FOR ALL
(a) Use a pilot drill and drill the rivet stem through the head.
(b) Use a punch to remove the rivet lock collar.
(c) Use a DRILL - NO 11 (DIA 0,191 IN - 4,851 MM) to drill the rivet head.
(2) Remove a standard type rivet as follows:
(a) Use a DRILL - NO 11 (DIA 0,191 IN - 4,851 MM) to drill the rivet head.
Subtask 71-11-11-110-063-A ** ON A/C NOT FOR ALL
Subtask 71-11-11-942-057-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:28:58 UTC
Replace the Loose or Damaged Rivets of the Lipskin Inner Surface - VRS2746
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis TASK gives the procedure to replace loose or damaged rivets on the lipskin inner surface.
The replacement rivet is a blind cherrylock or cherrymax type. An oversize cherrymax rivet can be used if required.
There is no limit to the number of rivets which can be replaced. Make sure the rivet hole has a minimum edge distance of 1.6d
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-076) | Methyl Ethyl Ketone, Technical grade |
| (Material No.V02-099) | lint free cloth |
| (Material No.V04-005) | jointing compound |
| (Material No.V06-131) | marking pen |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 30-21-49-000-015-A | Removal of the Anti-Ice Interbulkhead System |
| TASK 30-21-49-400-015-A | Installation of the Anti-Ice Interbulkhead System |
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 70-30-00-918-010-A | Consumable Materials Index |
Subtask 71-11-11-941-063-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).
(4) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
4. Procedure(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).
(4) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
Subtask 71-11-11-110-062-A ** ON A/C NOT FOR ALL
A. Clean the repair area
(1) Soak a piece of lint free cloth (Material No.V02-099) inV01-076 Methyl Ethyl Ketone, Technical grade
(2) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(3) Make sure there is no unwanted material on the repair area.
Subtask 71-11-11-010-062-A ** ON A/C NOT FOR ALL (1) Soak a piece of lint free cloth (Material No.V02-099) in
(2) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(3) Make sure there is no unwanted material on the repair area.
B. Get access to the bottom of the lipskin
(1) Remove the anti-ice interbulkhead system (Ref. AMM TASK 30-21-49-000-015).
(2) Pre SBN 70-0735 only: Remove the nuts and the bolts that attach the cover plate to the rear bulkhead. Remove the cover plate.
Subtask 71-11-11-350-067-A ** ON A/C NOT FOR ALL (1) Remove the anti-ice interbulkhead system (Ref. AMM TASK 30-21-49-000-015).
(2) Pre SBN 70-0735 only: Remove the nuts and the bolts that attach the cover plate to the rear bulkhead. Remove the cover plate.
C. Identify the loose or damaged rivets
(1) Use a marking pen (Material No.V06-131) (Ref. AMM TASK 70-30-00-918-010) and identify the loose or damaged rivets of the lipskin inner surface.
Subtask 71-11-11-350-068-A ** ON A/C NOT FOR ALL (1) Use a marking pen (Material No.V06-131) (Ref. AMM TASK 70-30-00-918-010) and identify the loose or damaged rivets of the lipskin inner surface.
WARNING:
PUT ON PROTECTIVE CLOTHING, GLOVES AND GOGGLES WHEN YOU USE CUTTING TOOLS. INJURY CAN OCCUR.
CAUTION:
WHEN YOU REMOVE RIVETS, DO NOT INCREASE THE RIVET HOLE SIZE. DO NOT DRILL THROUGH THE RIVET. DAMAGE TO THE INTERNAL PARTS CAN OCCUR. DO NOT REMOVE MORE THAN THREE ADJACENT RIVETS AT ONE TIME. MISALIGNMENT OF THE PARTS CAN OCCUR.
D. Remove the loose or damaged rivets NOTE: If more than 5 adjacent rivets must be removed, let each third rivet remain in position until the adjacent rivets are replaced.
(1) Remove a blind type rivet as follows: (a) Use a pilot drill and drill the rivet stem through the head.
(b) Use a punch to remove the rivet lock collar.
(c) Use a DRILL - NO 11 (DIA 0,191 IN - 4,851 MM) to drill the rivet head.
NOTE: Do not drill through the rivet.
(d) Use a punch to remove the rivet head and the remaining rivet shank from the hole. (2) Remove a standard type rivet as follows:
(a) Use a DRILL - NO 11 (DIA 0,191 IN - 4,851 MM) to drill the rivet head.
NOTE: Do not drill through the rivet.
(b) Use a punch to remove the rivet head and the remaining rivet shank from the hole. E. Clean the repair area
(1) Soak a piece of lint free cloth (Material No.V02-099) inV01-076 Methyl Ethyl Ketone, Technical grade
(2) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(3) Make sure there is no unwanted material on the repair area.
Subtask 71-11-11-220-050-A ** ON A/C NOT FOR ALL (1) Soak a piece of lint free cloth (Material No.V02-099) in
(2) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(3) Make sure there is no unwanted material on the repair area.
F. Do a check of the rivet holes
(1) Check that the rivet holes are not damaged.
(2) Do a check of the blind type rivet hole as follows:
(a) Use the applicable GAGE - RIVET HOLE (GRIP LENGHT) and check the size of each hole.
(3) Do a check of the standard type rivet hole as follows:
(a) Measure each rivet hole and make sure that it is not more than 0.209 in. (5.3 mm) in diameter.
(b) If the rivet hole is more than 0.209 in. (5.3 mm) in diameter, drill the hole to no more than 0.275 in. (6.98 mm) to fit an oversize rivet.
Subtask 71-11-11-350-069-A ** ON A/C NOT FOR ALL (1) Check that the rivet holes are not damaged.
(2) Do a check of the blind type rivet hole as follows:
(a) Use the applicable GAGE - RIVET HOLE (GRIP LENGHT) and check the size of each hole.
(3) Do a check of the standard type rivet hole as follows:
(a) Measure each rivet hole and make sure that it is not more than 0.209 in. (5.3 mm) in diameter.
(b) If the rivet hole is more than 0.209 in. (5.3 mm) in diameter, drill the hole to no more than 0.275 in. (6.98 mm) to fit an oversize rivet.
G. Install the rivets
(1) Use a depth gauge to measure for the correct rivet length.
(2) Apply a thin layer of jointing compound (Material No.V04-005) on the rivets and in the rivet holes.
(3) Use the GUN - RIVET with the RIVETING EQUIPMENT - PULLING HEAD to install the rivets.
Subtask 71-11-11-110-064-A ** ON A/C NOT FOR ALL (1) Use a depth gauge to measure for the correct rivet length.
(2) Apply a thin layer of jointing compound (Material No.V04-005) on the rivets and in the rivet holes.
(3) Use the GUN - RIVET with the RIVETING EQUIPMENT - PULLING HEAD to install the rivets.
NOTE: Make sure that the rivets are flush with the surface of the lipskin.
H. Clean the repair area
(1) Use a VACUUM CLEANER to remove unwanted materials from the outer areas of the repair.
(2) Use a VACUUM CLEANER through the cover plate hole, to remove unwanted materials from the inner areas of the lipskin.
(3) Soak a piece of lint free cloth (Material No.V02-099) inV01-076 Methyl Ethyl Ketone, Technical grade
(4) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(5) Make sure there is no unwanted material on the repair area.
Subtask 71-11-11-210-069-A ** ON A/C NOT FOR ALL (1) Use a VACUUM CLEANER to remove unwanted materials from the outer areas of the repair.
(2) Use a VACUUM CLEANER through the cover plate hole, to remove unwanted materials from the inner areas of the lipskin.
(3) Soak a piece of lint free cloth (Material No.V02-099) in
(4) Use a clean piece of lint free cloth to dry the area before the cleaning fluid dries.
(5) Make sure there is no unwanted material on the repair area.
I. Examine the repair rivets to make sure that the repair is satisfactory and that it agrees with the repair instructions.
Subtask 71-11-11-410-058-A ** ON A/C NOT FOR ALL J. Close the access to the bottom of the lipskin
(1) Pre SBN 70-0735 only: install the cover plate as follows:
(a) Use the bolts and the washers and attach the cover plate to the rear bulkhead.
(b) TORQUE the bolts to between 35 and 25 lbf.in (0.40 and 0.28 m.daN )
(Ref. AMM TASK 70-23-11-911-013).
(2) Install the anti-ice interbulkhead system (Ref. AMM TASK 30-21-49-400-015).
Subtask 71-11-11-350-070-A ** ON A/C NOT FOR ALL (1) Pre SBN 70-0735 only: install the cover plate as follows:
(a) Use the bolts and the washers and attach the cover plate to the rear bulkhead.
(b) TORQUE the bolts to between 35 and 25 lbf.in (0.40 and 0.28 m.daN )
(Ref. AMM TASK 70-23-11-911-013). (2) Install the anti-ice interbulkhead system (Ref. AMM TASK 30-21-49-400-015).
K. Identify the repair scheme number on the cowl.
(1) Use a marking pen (Material No.V06-131) (Ref. AMM TASK 70-30-00-918-010) (that is a different colour than the background) to write VRS2746 adjacent to the identification plate on the cowl.
5. Close-up(1) Use a marking pen (Material No.V06-131) (Ref. AMM TASK 70-30-00-918-010) (that is a different colour than the background) to write VRS2746 adjacent to the identification plate on the cowl.
Subtask 71-11-11-942-057-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).
(1) Remove the WARNING NOTICE(S).
(2) Remove the access platform(s).