W DOC AIRBUS | AMM A320F

Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves and Surrounding Structure (150 mm around latches) [CFML]

TASK 78-32-00-220-806-A
Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves and Surrounding Structure (150 mm around latches)

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 Job
Refer to the MPD TASK: 783222-01
DETAILED INSPECTION OF THRUST REVERSER, LATCH ASSEMBLY ON THE TWO HALVES AND SURROUNDING STRUCTURE (150 MM AROUND LATCHES).
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
LIGHT SOURCE - HIGHPOWER
No specific
1
MAGNIFYING GLASS POWER 10X
No specific
AR
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CPNCL02069)
LINT-FREE COTTON CLOTH
(Material No.CPNCL02589)
GENERAL CLEANING AGENT - MULTI PURPOSE
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR
 D. Referenced Information
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
NSRM 543043
NSRM 543051
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
3. Job Set-up
Subtask 78-32-00-941-115-A
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 a WARNING NOTICE(S) in position to tell persons not to operate:
  • The ENG/MODE selector switch
  • 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 a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 78-32-00-010-168-A
B. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
Subtask 78-32-00-040-114-A
C. Deactivation of the Thrust Reverser System for Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Do the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).
Subtask 78-32-00-010-169-A
D. Get Access
   (1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
4. Procedure
Subtask 78-32-00-220-056-A
A. Detailed Inspection of the Thrust Reverser Latch Assembly on the Two Halves and Surrounding Structure ( 150 mm (5.91 in.) Around the Latches)
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
NOTE: You can use a MAGNIFYING GLASS POWER 10X and LIGHT SOURCE - HIGHPOWER.
   (1) Do the detail visual inspection of the thrust reverser 6 o'clock latches assembly and surrounding structure ( 150 mm (5.91 in.) around latch fittings):
     (a) Clean the thrust reverser latches with GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) , if necessary.
     (b) Do the detail inspection on the surrounding area of the latch-L1 assembly ( 150 mm (5.91 in.) around the latch-L1 assembly) of the parts in the list below that you can see. See the sheet 2 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Forward frame (1),
  • Latch-L1 (2),
  • Latch pin (3),
  • Shear pin bushing (4),
  • Pin retention fork (5),
  • Latch bumper (6),
  • Latch washers (7),
  • Bushings (8),
  • Screw (9),
  • Insert (10),
  • Fire box (11),
  • Fire shield (12).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles.
     (c) Do the detail inspection on the surrounding area of the latch-L2 assembly ( 150 mm (5.91 in.) around the latch-L2 assembly) of the parts in the list below that you can see. See the sheet 3 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Beam 6 o'clock (13),
  • Latch-L2 (14),
  • Latch pin (15),
  • Shear pin bushing (16),
  • Latch bumper (17),
  • Bushings (18),
  • Fire box (19),
  • Fire shield (20).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles.
     (d) Do the detail inspection on the surrounding area of the latch-L3.1 and latch-L3.2 assembly ( 150 mm (5.91 in.) around the latch-L3.1 and latch-L3.2 assembly) of the parts in the list below that you can see. See the sheet 04 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Beam 6 o'clock (21),
  • Latch-L3.1 and latch-L3.2 (22),
  • Latch pin (23),
  • Shear pin bushing (24),
  • Latch bumper (25),
  • Bushings (26),
  • Fire box (27).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles.
     (e) Do the detail inspection on the surrounding area of the latch-L4.1 and latch-L4.2 assembly ( 150 mm (5.91 in.) around the latch-L4.1 and latch-L4.2 assembly) of the parts in the list below that you can see. See the sheet 5 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Latch housing (28),
  • Fittings (29),
  • Shim (30),
  • Acoustic panel (31),
  • Latch-L4.1 and latch-L4.2 (32),
  • Latch pin (33),
  • Shear pin bushings (34),
  • Pin retainers (35),
  • Bushings (36),
  • Nuts (37),
  • Screws (38),
  • Fairing (39),
  • Seal (40).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, delamination, deterioration of protection, missing or loose fasteners).
         a If you find damage (delamination, nicks, scratches and gouges) on the Acoustic panel (31), refer to NSRM 543051.
         b If you find other damages, contact SAFRAN Nacelles.
     (f) Do the detail inspection on the surrounding area of the latch-LACC.1 and latch-LACC.2 assembly ( 150 mm (5.91 in.) around the latch-LACC.1 and latch-LACC.2 assembly) of the parts in the list below that you can see. See the sheet 6 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Aft core external skin (41),
  • Latch housing (42),
  • Latch-LACC.1 and latch-LACC.2 (43),
  • Latch pin (44),
  • Shear pin bushings (45),
  • Bushings (46).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, perforations, missing or loose fasteners).
         a If you find damage (nicks, scratches and gouges) on the Aft core external skin (41), refer to NSRM 543043.
     (g) Do the detail inspection of the latch housing (42). See the sheet 6 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
       1 Make sure that there are no signs of corrosion.
         a If you find corrosion, contact SAFRAN Nacelles.
   (2) Do the detail visual inspection of the thrust reverser 6 o'clock latch keepers assemblies and surrounding structure ( 150 mm (5.91 in.) around the latch):
     (a) Clean the thrust reverser latch keepers with GENERAL CLEANING AGENT - MULTI PURPOSE (Material No.CPNCL02589) and a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) , if necessary.
     (b) Do the detail inspection on the surrounding area of the keeper-L1 assembly ( 150 mm (5.91 in.) around the keeper-L1 assembly) of the parts in the list below that you can see. See the sheet 8 of figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Forward frame (47),
  • Keeper-L1 (48),
  • Latch bumper (49),
  • Latch washer (50),
  • Bumper shim (51),
  • Spigot (52),
  • Spigot shims (53),
  • Bushing (54),
  • Nut (55),
  • Washer (56),
  • Fire box (57),
  • Fire shield (58).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles
     (c) Do the detail inspection on the surrounding area of the keeper-L2 assembly ( 150 mm (5.91 in.) around the keeper-L2 assembly) of the parts in the list below that you can see. See the sheet 9 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Beam 6 o'clock (59),
  • Keeper-L2 (60),
  • Bumper shims (61),
  • Spigot (62),
  • Spigot shims (63),
  • Bushing (64),
  • Bumper washer (69),
  • Nuts (65),
  • Screw (70),
  • Washers (66),
  • Fire box (67),
  • Fire shield (68).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles.
     (d) Do the detail inspection on the surrounding area of the keeper-L3.1 and keeper-L3.2 assembly ( 150 mm (5.91 in.) around the keeper-L3.1 and keeper-L3.2 assembly) of the parts in the list below that you can see. See the sheet 10 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Beam 6 o'clock (71),
  • Keeper-L3.1 and keeper-L3.2 (72),
  • Bumper shims (73),
  • Spigot (74),
  • Spigot shims (75),
  • Bushing (76),
  • Bumper washer (77),
  • Nuts (78),
  • Screw (79),
  • Washers (80),
  • Fire box (81).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, missing or loose fasteners).
         a If you find damage, contact SAFRAN Nacelles.
     (e) Do the detail inspection on the surrounding area of the keeper-L4.1 and keeper-L4.2 assembly ( 150 mm (5.91 in.) around the keeper-L4.1 and keeper-L4.2 assembly) of the parts in the list below that you can see. See the sheet 11 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Latch housing (82),
  • Fittings (83),
  • Shim (84),
  • Acoustic panel (85),
  • Keeper-L4.1 and keeper-L4.2 (86),
  • Pin retainers (87),
  • Spigots (88),
  • Screws (89),
  • Fairing (90),
  • Seal (91),
  • Bushings (92),
  • Nuts (93).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, delamination, deterioration of protection, missing or loose fasteners).
         a If you find damage, (delamination, nicks, scratches and gouges) on the Acoustic panel (85), NSRM 543051.
         b If you find other damages, contact SAFRAN Nacelles.
     (f) Do the detail inspection on the surrounding area of the keeper-LACC.1 and keeper-LACC.2 assembly ( 150 mm (5.91 in.) around the keeper-LACC.1 and keeper-LACC.2 assembly) of the parts in the list below that you can see. See the sheet 12 of the figure:
F Detailed Inspection of Thrust Reverser, Latch Assembly on the Two Halves And Surrounding Structure
  • Aft core cowl external skin (94),
  • Latch housing (95),
  • Keeper-LACC.1 and keeper-LACC.2 (96),
  • Spigots (97),
  • Bushings (98).
       1 Make sure that there are no signs of damage (cracks, nicks, scratches, dents, gouges, deterioration of protection, perforations, missing or loose fasteners).
         a If you find damage (nicks, scratches and gouges) on the Aft core external skin (94), NSRM 543043.
         b If you find other damages, contact Safran Nacelles.
5. Close-up
Subtask 78-32-00-410-157-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
Subtask 78-32-00-440-106-A
B. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).
Subtask 78-32-00-410-158-A
C. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 03:35:45 UTC
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