DOC AIRBUS | AMM A320FSpecial Detailed Inspection (US) of Pylon, Front Upper Spar, Splicing between RIB 2 and RIB 3, LH/RH
TASK 54-51-00-270-803-A
Special Detailed Inspection (US) of Pylon, Front Upper Spar, Splicing between RIB 2 and RIB 3, LH/RH
Refer to the MPD TASK: 545308-02
SPECIAL DETAILED INSPECTION (US) OF PYLON, FRONT UPPER SPAR, SPLICING BETWEEN RIB 2 AND RIB 3, LH/RH.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 54-51-00-941-126-C
Subtask 54-51-00-270-055-A
Subtask 54-51-00-410-140-A
[Rev.10 from 2021]
2026.04.01 02:00:25 UTC
Special Detailed Inspection (US) of Pylon, Front Upper Spar, Splicing between RIB 2 and RIB 3, LH/RH
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobRefer to the MPD TASK: 545308-02
SPECIAL DETAILED INSPECTION (US) OF PYLON, FRONT UPPER SPAR, SPLICING BETWEEN RIB 2 AND RIB 3, LH/RH.
NOTE: The effectivity of this task is "ALL". To know if this task is applicable to your aircraft, refer to the MPD task applicability.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 415 | LOWER PYLON |
| 425 | LOWER PYLON |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-803-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-803-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-807-A | Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU) |
| TASK 78-30-00-440-807-A | Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU) |
| TASK 78-36-00-010-806-A | Opening of the Thrust Reverser Cowl Doors |
| TASK 78-36-00-410-806-A | Closing of the Thrust Reverser Cowl Doors |
| SRM 511100 | |
| SRM 512200 | |
| NTM 545308 | |
| SRM 512300 | (for corrective action) |
| SRM 512400 | (for corrective action) |
Front Upper Spar of the Pylon, Splicing between RIB 2 and RIB 3, Left and Right SidesSubtask 54-51-00-941-126-C
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put the WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 54-51-00-040-123-A (1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put the WARNING NOTICE(S) in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
B. Deactivation of the Thrust Reverser
Subtask 54-51-00-010-132-A WARNING:
MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.
(1) Make the thrust reverser unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-807). C. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(2) Open the thrust-reverser cowl doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, at zone 415
(b) For the right pylon, at zone 425.
Subtask 54-51-00-110-123-A (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(2) Open the thrust-reverser cowl doors (Ref. AMM TASK 78-36-00-010-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position:
(a) For the left pylon, at zone 415
(b) For the right pylon, at zone 425.
D. Preparation of the Inspection Area
(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Remove the sealant and/or paint from the inspection area if this is necessary for the Nondestructive Testing Manual (NTM) task.
4. Procedure(1) Make sure that the inspection area is sufficiently clean to do a satisfactory inspection of the area.
(2) If not, clean the inspection area with Non Aqueous Cleaner-General - - (Material No.08BAA9) and the Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Remove the sealant and/or paint from the inspection area if this is necessary for the Nondestructive Testing Manual (NTM) task.
Subtask 54-51-00-270-055-A
A. Inspection
(1) Do a special detailed inspection of the front upper spar of the pylon for damage or discontinuities. Do this inspection at the splicing of RIB2 and RIB3, left and right sides NTM 545308.
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual SRM 512200 for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual SRM 511100 for the damage types, classification and corrective action.
Subtask 54-51-00-916-050-A (1) Do a special detailed inspection of the front upper spar of the pylon for damage or discontinuities. Do this inspection at the splicing of RIB2 and RIB3, left and right sides NTM 545308.
(2) Make a report of the damage after the NTM inspection:
(a) Corrosion damage:
If you find corrosion, refer to the Structural Repair Manual SRM 512200 for the corrosion types, inspection, removal and subsequent corrosion protection.
(b) Other damage (scratches, cracks, gouges, dents, creases):
If you find this type of damage, refer to the Structural Repair Manual SRM 511100 for the damage types, classification and corrective action.
B. Sealant or paint application
(1) If the NTM procedure asked to remove the sealant and/or paint from the inspection area, apply sealant SRM 512400 or paint SRM 512300 on the inspection area.
5. Close-up(1) If the NTM procedure asked to remove the sealant and/or paint from the inspection area, apply sealant SRM 512400 or paint SRM 512300 on the inspection area.
Subtask 54-51-00-410-140-A
A. Close Access
(1) Close the thrust-reverser cowl doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
Subtask 54-51-00-440-122-A (1) Close the thrust-reverser cowl doors (Ref. AMM TASK 78-36-00-410-806):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
B. Reactivation of the Thrust Reverser
(1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-807).
Subtask 54-51-00-942-101-C (1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-807).
C. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(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(s).
(3) Remove the WARNING NOTICE(S).