DOC AIRBUS | AMM A320FGeneral Visual Inspection (GVI) of the Thrust Reverser Thermal Insulation Blankets [PW11]
TASK 78-32-00-210-821-A
General Visual Inspection (GVI) of the Thrust Reverser Thermal Insulation Blankets
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-32-00-941-108-A ** ON A/C NOT FOR ALL
Subtask 78-32-00-410-146-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 04:53:58 UTC
General Visual Inspection (GVI) of the Thrust Reverser Thermal Insulation Blankets
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 AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-32-00-300-802-A | Repair of the Thrust Reverser Thermal Blankets |
| TASK 78-32-41-000-803-A | Removal of the Left Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-41-400-803-A | Installation of the Left Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-71-000-802-A | Removal of the Right Thrust Reverser Thermal Insulation Blankets |
| TASK 78-32-71-400-802-A | Installation of the Right Thrust Reverser Thermal Insulation Blankets |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Thermal Insulation Blankets - PRE SB GRAA320NEO-A-78-30-0006-00001-930A-DSubtask 78-32-00-941-108-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 78-32-00-010-155-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
Subtask 78-32-00-040-107-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
C. Deactivation of the Thrust Reverser for Maintenance
Subtask 78-32-00-010-156-A ** ON A/C NOT FOR ALL 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 maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
4. Procedure(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-00-210-105-A ** ON A/C NOT FOR ALL A. GVI of the Left Thrust Reverser Thermal Insulation Blankets
(1) Do not discard a part until you are sure that there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Examine the insulation thermal blankets on the inner fixed structure for loose or missing retainers. If you find loose or missing retainers, tighten or replace them.
(3) Examine the thermal insulation blankets for burns, bulges, heat discoloration, tears or other damage. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures, or contact UTAS for disposition.
(4) Examine the metallic surface of the thermal insulation blankets for holes.
(a) If you find holes 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm) or smaller, repair the thermal insulation blanket (Ref. AMM TASK 78-32-00-300-802).
(b) If you find holes larger than 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm), refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems (UTAS) for disposition.
(5) Make sure that the top edge of the upper bifurcation bumper blanket is under the retainer for the top seal.
(a) Make sure that the other edges are on top of the upper bifurcation bumper seal.
(6) Make sure that the top and forward edges of the upper forward barrel blanket are under the retainers for the top and forward seals.
(a) Make sure that the aft edge is on top of the upper aft barrel blanket.
(b) Make sure that the lower edge is on top of the lower forward barrel blanket.
(7) Make sure that the top edge of the upper aft barrel blanket is under the retainer for the top seal.
(a) Make sure that the lower edge is on top of the lower aft barrel blanket and the lower forward barrel blanket.
(8) Make sure that the aft edge of the aft latch beam blanket is under the retainer for the aft seal.
(a) Make sure that the top edge is on top of the lower forward barrel blanket.
(b) Make sure that the forward edge is on top of the forward latch beam blanket.
(9) Make sure that the forward edge of the lower forward barrel blanket is under the retainer for the forward seal.
(a) Make sure that the lower edge is on top of the forward latch beam blanket.
(b) Make sure that the aft edge is on top of the lower aft barrel blanket.
(10) Make sure that the forward edge of the forward latch beam blanket is under the retainer for the forward seal.
(11) Make sure that the bottom edge of the lower aft barrel blanket is under the blanket retainer.
(12) Make sure that all the other edges of the blankets are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(13) If an edge of a blanket is not correctly installed, adjust the blanket with your hand.
(a) If necessary, remove and install the blanket (Ref. AMM TASK 78-32-41-000-803) and (Ref. AMM TASK 78-32-41-400-803).
(14) Examine the edge of the heat blanket adjacent to the forward edge of the Air Cooled Oil Cooler (ACOC) exhaust duct.
(a) Make sure that it is flush with the surface of the ACOC exhaust duct.
(b) If the blanket is not flush with the surface of the ACOC exhaust duct, adjust the blanket with your hand.
Subtask 78-32-00-210-106-A ** ON A/C NOT FOR ALL (1) Do not discard a part until you are sure that there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Examine the insulation thermal blankets on the inner fixed structure for loose or missing retainers. If you find loose or missing retainers, tighten or replace them.
(3) Examine the thermal insulation blankets for burns, bulges, heat discoloration, tears or other damage. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures, or contact UTAS for disposition.
(4) Examine the metallic surface of the thermal insulation blankets for holes.
(a) If you find holes 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm) or smaller, repair the thermal insulation blanket (Ref. AMM TASK 78-32-00-300-802).
(b) If you find holes larger than 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm), refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems (UTAS) for disposition.
(5) Make sure that the top edge of the upper bifurcation bumper blanket is under the retainer for the top seal.
(a) Make sure that the other edges are on top of the upper bifurcation bumper seal.
(6) Make sure that the top and forward edges of the upper forward barrel blanket are under the retainers for the top and forward seals.
(a) Make sure that the aft edge is on top of the upper aft barrel blanket.
(b) Make sure that the lower edge is on top of the lower forward barrel blanket.
(7) Make sure that the top edge of the upper aft barrel blanket is under the retainer for the top seal.
(a) Make sure that the lower edge is on top of the lower aft barrel blanket and the lower forward barrel blanket.
(8) Make sure that the aft edge of the aft latch beam blanket is under the retainer for the aft seal.
(a) Make sure that the top edge is on top of the lower forward barrel blanket.
(b) Make sure that the forward edge is on top of the forward latch beam blanket.
(9) Make sure that the forward edge of the lower forward barrel blanket is under the retainer for the forward seal.
(a) Make sure that the lower edge is on top of the forward latch beam blanket.
(b) Make sure that the aft edge is on top of the lower aft barrel blanket.
(10) Make sure that the forward edge of the forward latch beam blanket is under the retainer for the forward seal.
(11) Make sure that the bottom edge of the lower aft barrel blanket is under the blanket retainer.
(12) Make sure that all the other edges of the blankets are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(13) If an edge of a blanket is not correctly installed, adjust the blanket with your hand.
(a) If necessary, remove and install the blanket (Ref. AMM TASK 78-32-41-000-803) and (Ref. AMM TASK 78-32-41-400-803).
(14) Examine the edge of the heat blanket adjacent to the forward edge of the Air Cooled Oil Cooler (ACOC) exhaust duct.
(a) Make sure that it is flush with the surface of the ACOC exhaust duct.
(b) If the blanket is not flush with the surface of the ACOC exhaust duct, adjust the blanket with your hand.
B. GVI of the Right Thrust Reverser Thermal Insulation Blankets
(1) Do not discard a part until you are sure that there are no repairs available. If you reject a part and no repair is available, contact UTAS for disposition.
(2) Examine the insulation thermal blankets on the inner fixed structure for loose or missing retainers. If you find loose or missing retainers, tighten or replace them.
(3) Examine the thermal insulation blankets for burns, bulges, heat discoloration, tears or other damage. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
(4) Examine the metallic surface of the thermal insulation blankets for holes.
(a) If you find holes 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm) or smaller, repair the thermal insulation blanket (Ref. AMM TASK 78-32-00-300-802).
(b) If you find holes larger than 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm), refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems (UTAS) for disposition.
(5) Make sure that the top edge of the upper bifurcation bumper blanket is under the retainer for the top seal.
(a) Make sure that the other edges are on top of the upper bifurcation bumper seal.
(6) Make sure that the top and forward edges of the upper forward barrel blanket are under the retainers for the top and forward seals.
(a) Make sure that the aft edge is on top of the upper aft barrel blanket.
(b) Make sure that the lower edge is on top of the lower forward barrel blanket.
(7) Make sure that the top edge of the upper aft barrel blanket is under the retainer for the top seal and the stiffener.
(a) Make sure that the lower edge is on top of the lower aft barrel blanket and the lower forward barrel blanket.
(8) Make sure that the aft edge of the aft latch beam blanket is under the support.
(a) Make sure that the top and forward edges are on top of the lower forward barrel blanket.
(b) Make sure that the forward edge is on top of the forward latch beam blanket.
(9) Make sure that the forward edge of the lower forward barrel blanket is under the retainers for the forward seals.
(a) Make sure that the lower edge is on top of the forward latch beam blanket.
(b) Make sure that the aft edge is on top of the lower aft barrel blanket.
(10) Make sure that the forward edge of the forward latch beam blanket is under the retainer for the forward seal.
(11) Make sure that the bottom edge of the lower aft barrel blanket is under the blank retainer.
(12) Make sure that all the other edges of the blankets are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(13) If an edge of a blanket is not correctly installed, adjust the blanket with your hand.
(a) If necessary, remove and install the blanket (Ref. AMM TASK 78-32-71-000-802) and (Ref. AMM TASK 78-32-71-400-802).
5. Close-up(1) Do not discard a part until you are sure that there are no repairs available. If you reject a part and no repair is available, contact UTAS for disposition.
(2) Examine the insulation thermal blankets on the inner fixed structure for loose or missing retainers. If you find loose or missing retainers, tighten or replace them.
(3) Examine the thermal insulation blankets for burns, bulges, heat discoloration, tears or other damage. If you find damage, refer to the Structural Repair Manual for allowable damage limits and repair procedures or contact UTAS for disposition.
(4) Examine the metallic surface of the thermal insulation blankets for holes.
(a) If you find holes 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm) or smaller, repair the thermal insulation blanket (Ref. AMM TASK 78-32-00-300-802).
(b) If you find holes larger than 0.06 in. (1.52 mm) x 0.25 in. (6.35 mm), refer to the Structural Repair Manual (SRM) for allowable damage limits and repair procedures or contact United Technologies Aerospace Systems (UTAS) for disposition.
(5) Make sure that the top edge of the upper bifurcation bumper blanket is under the retainer for the top seal.
(a) Make sure that the other edges are on top of the upper bifurcation bumper seal.
(6) Make sure that the top and forward edges of the upper forward barrel blanket are under the retainers for the top and forward seals.
(a) Make sure that the aft edge is on top of the upper aft barrel blanket.
(b) Make sure that the lower edge is on top of the lower forward barrel blanket.
(7) Make sure that the top edge of the upper aft barrel blanket is under the retainer for the top seal and the stiffener.
(a) Make sure that the lower edge is on top of the lower aft barrel blanket and the lower forward barrel blanket.
(8) Make sure that the aft edge of the aft latch beam blanket is under the support.
(a) Make sure that the top and forward edges are on top of the lower forward barrel blanket.
(b) Make sure that the forward edge is on top of the forward latch beam blanket.
(9) Make sure that the forward edge of the lower forward barrel blanket is under the retainers for the forward seals.
(a) Make sure that the lower edge is on top of the forward latch beam blanket.
(b) Make sure that the aft edge is on top of the lower aft barrel blanket.
(10) Make sure that the forward edge of the forward latch beam blanket is under the retainer for the forward seal.
(11) Make sure that the bottom edge of the lower aft barrel blanket is under the blank retainer.
(12) Make sure that all the other edges of the blankets are between 0.00 in. (0.00 mm) and 0.15 in. (3.81 mm) from the adjacent structures on the inner fixed structure.
(13) If an edge of a blanket is not correctly installed, adjust the blanket with your hand.
(a) If necessary, remove and install the blanket (Ref. AMM TASK 78-32-71-000-802) and (Ref. AMM TASK 78-32-71-400-802).
Subtask 78-32-00-410-146-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) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
Subtask 78-32-00-440-100-A ** ON A/C NOT FOR ALL (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 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-32-00-410-147-A ** ON A/C NOT FOR ALL