DOC AIRBUS | AMM A320FGeneral Visual Inspection (GVI) of the Thrust Reverser Actuation System (TRAS) [PW11]
TASK 78-31-00-200-801-A
General Visual Inspection (GVI) of the Thrust Reverser Actuation System (TRAS)
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 78-31-00-941-064-A ** ON A/C NOT FOR ALL
Subtask 78-31-00-860-090-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:43:35 UTC
General Visual Inspection (GVI) of the Thrust Reverser Actuation System (TRAS)
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:
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.
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 2M (6 FT) - ADJUSTABLE |
| No specific | 1 | PLIERS - JAWED, SOFT |
| 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 71-00-00-860-832-A | Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC |
| 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 73-25-34-400-802-A | Installation of the Engine Interface Unit (EIU) |
| 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 78-31-03-000-801-A | Removal of the TRAS Locking Actuator |
| TASK 78-31-03-400-801-A | Installation of the TRAS Locking Actuator |
| TASK 78-31-04-000-801-A | Removal of the TRAS Locking-Feedback Actuator |
| TASK 78-31-04-400-801-A | Installation of the TRAS Locking-Feedback Actuator |
| TASK 78-31-05-000-801-A | Removal of the Manual Drive Unit (MDU) |
| TASK 78-31-05-400-801-A | Installation of the Manual Drive Unit (MDU) |
| TASK 78-31-07-000-801-A | Removal of the Flex Shaft |
| TASK 78-31-07-400-801-A | Installation of the Flex Shaft |
| TASK 78-31-50-000-801-A | Removal of the TRAS Hydraulic Tubes and Hoses |
| TASK 78-31-50-400-801-A | Installation of the TRAS Hydraulic Tubes and Hoses |
| TASK 78-31-61-000-811-A | Removal of the Left TRAS Monitoring Harness |
| TASK 78-31-61-000-812-A | Removal of the Right TRAS Monitoring Harness |
| TASK 78-31-61-400-811-A | Installation of the Left TRAS Monitoring Harness |
| TASK 78-31-61-400-812-A | Installation of the Right TRAS Monitoring Harness |
| TASK 78-31-62-000-801-A | Removal of the Left TRAS Track Lock Harness |
| TASK 78-31-62-000-802-A | Removal of the Right TRAS Track Lock Harness |
| TASK 78-31-62-400-801-A | Installation of the Left TRAS Track Lock Harness |
| TASK 78-31-62-400-802-A | Installation of the Right TRAS Track Lock Harness |
| TASK 78-32-00-860-802-A | Manual Extension of the Thrust-Reverser Translating Sleeves |
| TASK 78-32-00-860-803-A | Manual Retraction of the Thrust-Reverser Translating Sleeves |
| TASK 78-32-34-000-802-A | Removal of the Left Translating Sleeve Access Panels |
| TASK 78-32-34-400-802-A | Installation of the Left Translating Sleeve Access Panels |
| TASK 78-32-38-000-801-A | Removal of the Track Lock Cover |
| TASK 78-32-38-400-801-A | Installation of the Track Lock Cover |
| TASK 78-32-64-000-802-A | Removal of the Right Translating Sleeve Access Panels |
| TASK 78-32-64-400-802-A | Installation of the Right Translating Sleeve Access Panels |
| 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 |
| TASK 78-37-01-000-801-A | Removal of the Thrust Reverser Actuator System (TRAS) Track Lock |
| TASK 78-37-01-400-801-A | Installation of the Thrust Reverser Actuator System (TRAS) Track Lock |
| TASK 78-37-02-000-801-A | Removal of the Thrust Reverser Actuation System (TRAS) Track Lock Valve |
| TASK 78-37-02-400-801-A | Installation of the Thrust Reverser Actuation System (TRAS) Track Lock Valve |
Thrust Reverser Actuation System (TRAS)Subtask 78-31-00-941-064-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
Subtask 78-31-00-010-067-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
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 2M (6 FT) - ADJUSTABLE in position.
Subtask 78-31-00-040-057-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 2M (6 FT) - ADJUSTABLE in position.
C. Deactivation of the Thrust Reverser for Maintenance
4. ProcedureWARNING:
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). CAUTION:
WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-31-00-210-055-A ** ON A/C NOT FOR ALL A. General Visual Inspection (GVI) of the Thrust Reverser Actuation System (TRAS)
(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Visually examine the thrust reverser actuation system TRAS.
(a) Examine the hydraulic hoses and hose guide bracket on the TRAS.
1 Examine the deploy hose, the stow hose and the return hose for cuts, tears, holes, gouges, chafing and other damage. If you find damage, replace the damaged hose (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
2 Examine the hose guide bracket and the related hardware for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
(b) Examine the locking feedback actuator.
1 Examine the locking feedback actuator for cracks, corrosion, distortion, dents, deterioration, wear or other damage. If you find damage, replace the damaged locking feedback actuator (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
2 Examine the actuator seal for the locking feedback actuator for cracks, gouges, holes and other damage. If you find damage, replace the actuator seal (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
3 Examine the gimbal pins, the retainers and their hardware on the locking feedback actuator for cracks, gouges, corrosion, distortion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
4 Examine the grounding strap on the locking feedback actuator for damage through the insulation to the wire, damaged or missing lugs, breaks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
(c) Examine the TRAS monitoring harness and the 115V track lock harness.
1 Examine the TRAS monitoring harnesses 4131KS and (4132KS) for cracks, holes, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
2 Examine the TRAS monitoring harness connectors 4052VC, 4053VC, 4003KS-A, 4032KS-A, 4040KS-A, 4042KS-A, 4034KS-A, 4038KS-A, 4046KS-A, (4054VC), (4055VC), (4033KS-A), (4041KS-A), (4004KS-A), (4035KS-A), (4043KS-A), (4039KS-A) and (4047KS-A). Look for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
3 Examine the 115V track lock harness 4136KS and (4137KS) for cracks, holes, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802) or contact UTAS for disposition.
4 Examine the 115V track lock harness connectors 4050VC, 4141KS-A, (4051VC) and (4142KS-A). Look for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802) or contact UTAS for disposition.
5 Examine the clamps and attaching hardware for cracks, gouges, holes, corrosion, loose or missing parts, and other damage. If you find damage, replace the part (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812), (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802).
(d) Examine the tubes and clamps between the actuators.
1 Examine the deploy tube for cracks, holes, gouges, dents, distortion, corrosion and other damage. If you find damage, replace the deploy tube (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801) or contact UTAS for disposition.
2 Examine the clamps and related hardware on the deploy tube for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801).
3 Examine the two block frames and insert line blocks on the deploy tube for cracks, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801).
4 Examine the stow tube and return tube between the actuators for cracks, holes, gouges, dents, distortion, corrosion and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
5 Examine the clamps and related hardware on the stow and return tubes for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
(e) Examine the locking actuator.
1 Examine the locking actuator for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the damaged locking actuator (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
2 Examine the actuator seal on the locking actuator for cracks, gouges and holes and other damage. If you find damage, replace the actuator seal (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
3 Examine the gimbal pins, retainers and their hardware on the locking actuator for cracks, gouges, corrosion, distortion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801).
4 Examine the grounding strap on the locking feedback actuator for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
5 Make sure the wire harness connectors are tight. If a connector is loose, tighten the connector finger-tight, then turn it 1/4 turn more with PLIERS - JAWED, SOFT.
(f) Examine the Manual Drive Unit (MDU) on the locking feedback actuator for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the MDU (Ref. AMM TASK 78-31-05-000-801) and (Ref. AMM TASK 78-31-05-400-801) or contact UTAS for disposition.
(g) Examine the actuator attachment to the translating sleeve.
1 Remove the translating sleeve access panels (Ref. AMM TASK 78-32-34-000-802) and (Ref. AMM TASK 78-32-64-000-802).
2 Examine the rod end of the locking feedback actuator and the attaching hardware. Look for cracks, gouges, nicks, scratches, and other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
3 Examine the rod end of the locking actuator and the attaching hardware. Look for cracks, gouges, nicks, scratches, and other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
4 Install the translating sleeve access panels (Ref. AMM TASK 78-32-34-400-802) and (Ref. AMM TASK 78-32-64-400-802).
(h) Examine the track lock valve.
1 Examine the track lock valve for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the track lock valve (Ref. AMM TASK 78-37-02-000-801) and (Ref. AMM TASK 78-37-02-400-801) or contact UTAS for disposition.
2 Examine the grounding strap on the track lock valve for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks, or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-37-02-000-801) and (Ref. AMM TASK 78-37-02-400-801).
(i) Examine the tubes below the locking actuator.
2 Examine the supply tube, return tubes, track-lock control tube and track-lock return tube below the locking actuator on the forward side of the torque box. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
3 Examine the clamp and related hardware on the return tube below the locking actuator for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) (Ref. AMM TASK 78-31-50-400-801).
4 Examine the grommet on the torque box for cracks, gouges, holes, deterioration or other damage. If you find damage, replace the grommet (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
5 Examine the return tubes and track lock control tubes on the aft side of the torque box. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
6 Examine the clamps and related hardware for the return tubes and track lock control tube on the aft side of the torque box. Look for cracks, gouges, holes, corrosion, loose or missing parts, and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
7 Examine the grommet on the latch beam for cracks, gouges, holes, deterioration or other damage. If you find damage, replace the grommet (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
8 Manually retract the translating sleeve (Ref. AMM TASK 78-32-00-860-803).
(j) Examine the track lock.
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
2 Remove the track lock cover (Ref. AMM TASK 78-32-38-000-801).
3 Examine the track lock for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the track lock (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801) or contact UTAS for disposition.
4 Examine the grounding strap on the track lock for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801).
5 POST SB GRAA320NEO-A-78-30-0005-00001-930A-D
Examine the pin guard attached to the track lock. Look for gouges, cracks, holes, distortions, and other damage. If you find damage, replace the pin guard (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801) or contact UTAS for disposition.
END OF POST SB GRAA320NEO-A-78-30-0005-00001-930A-D
6 Examine the track lock return tube, aft track lock return tube, and track lock control tube connections. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube. (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
7 Examine the TRAS monitoring harness connections for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
5. Close-up(1) Do not discard a part until you are sure there are no repairs available. If you reject a part and no repair is available, contact United Technologies Aerospace Systems (UTAS) for disposition.
(2) Visually examine the thrust reverser actuation system TRAS.
(a) Examine the hydraulic hoses and hose guide bracket on the TRAS.
1 Examine the deploy hose, the stow hose and the return hose for cuts, tears, holes, gouges, chafing and other damage. If you find damage, replace the damaged hose (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
2 Examine the hose guide bracket and the related hardware for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
(b) Examine the locking feedback actuator.
1 Examine the locking feedback actuator for cracks, corrosion, distortion, dents, deterioration, wear or other damage. If you find damage, replace the damaged locking feedback actuator (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
2 Examine the actuator seal for the locking feedback actuator for cracks, gouges, holes and other damage. If you find damage, replace the actuator seal (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
3 Examine the gimbal pins, the retainers and their hardware on the locking feedback actuator for cracks, gouges, corrosion, distortion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
4 Examine the grounding strap on the locking feedback actuator for damage through the insulation to the wire, damaged or missing lugs, breaks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
(c) Examine the TRAS monitoring harness and the 115V track lock harness.
1 Examine the TRAS monitoring harnesses 4131KS and (4132KS) for cracks, holes, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
2 Examine the TRAS monitoring harness connectors 4052VC, 4053VC, 4003KS-A, 4032KS-A, 4040KS-A, 4042KS-A, 4034KS-A, 4038KS-A, 4046KS-A, (4054VC), (4055VC), (4033KS-A), (4041KS-A), (4004KS-A), (4035KS-A), (4043KS-A), (4039KS-A) and (4047KS-A). Look for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
3 Examine the 115V track lock harness 4136KS and (4137KS) for cracks, holes, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802) or contact UTAS for disposition.
4 Examine the 115V track lock harness connectors 4050VC, 4141KS-A, (4051VC) and (4142KS-A). Look for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802) or contact UTAS for disposition.
5 Examine the clamps and attaching hardware for cracks, gouges, holes, corrosion, loose or missing parts, and other damage. If you find damage, replace the part (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812), (Ref. AMM TASK 78-31-62-000-801) and (Ref. AMM TASK 78-31-62-400-801), (Ref. AMM TASK 78-31-62-000-802) and (Ref. AMM TASK 78-31-62-400-802).
(d) Examine the tubes and clamps between the actuators.
1 Examine the deploy tube for cracks, holes, gouges, dents, distortion, corrosion and other damage. If you find damage, replace the deploy tube (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801) or contact UTAS for disposition.
2 Examine the clamps and related hardware on the deploy tube for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801).
3 Examine the two block frames and insert line blocks on the deploy tube for cracks, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-07-000-801) and (Ref. AMM TASK 78-31-07-400-801).
4 Examine the stow tube and return tube between the actuators for cracks, holes, gouges, dents, distortion, corrosion and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
5 Examine the clamps and related hardware on the stow and return tubes for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
(e) Examine the locking actuator.
1 Examine the locking actuator for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the damaged locking actuator (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
2 Examine the actuator seal on the locking actuator for cracks, gouges and holes and other damage. If you find damage, replace the actuator seal (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
3 Examine the gimbal pins, retainers and their hardware on the locking actuator for cracks, gouges, corrosion, distortion, missing parts or other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801).
4 Examine the grounding strap on the locking feedback actuator for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
5 Make sure the wire harness connectors are tight. If a connector is loose, tighten the connector finger-tight, then turn it 1/4 turn more with PLIERS - JAWED, SOFT.
(f) Examine the Manual Drive Unit (MDU) on the locking feedback actuator for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the MDU (Ref. AMM TASK 78-31-05-000-801) and (Ref. AMM TASK 78-31-05-400-801) or contact UTAS for disposition.
(g) Examine the actuator attachment to the translating sleeve.
1 Remove the translating sleeve access panels (Ref. AMM TASK 78-32-34-000-802) and (Ref. AMM TASK 78-32-64-000-802).
2 Examine the rod end of the locking feedback actuator and the attaching hardware. Look for cracks, gouges, nicks, scratches, and other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-04-000-801) and (Ref. AMM TASK 78-31-04-400-801) or contact UTAS for disposition.
3 Examine the rod end of the locking actuator and the attaching hardware. Look for cracks, gouges, nicks, scratches, and other damage. If you find damage, replace the damaged part (Ref. AMM TASK 78-31-03-000-801) and (Ref. AMM TASK 78-31-03-400-801) or contact UTAS for disposition.
4 Install the translating sleeve access panels (Ref. AMM TASK 78-32-34-400-802) and (Ref. AMM TASK 78-32-64-400-802).
(h) Examine the track lock valve.
1 Examine the track lock valve for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the track lock valve (Ref. AMM TASK 78-37-02-000-801) and (Ref. AMM TASK 78-37-02-400-801) or contact UTAS for disposition.
2 Examine the grounding strap on the track lock valve for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks, or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-37-02-000-801) and (Ref. AMM TASK 78-37-02-400-801).
(i) Examine the tubes below the locking actuator.
CAUTION:
DO NOT EXTEND THE THRUST REVERSER TRANSLATING SLEEVE WITH THE THRUST REVERSER HALVES OPEN. DAMAGE TO EQUIPMENT CAN OCCUR.
1 Manually extend the translating sleeve (Ref. AMM TASK 78-32-00-860-802). 2 Examine the supply tube, return tubes, track-lock control tube and track-lock return tube below the locking actuator on the forward side of the torque box. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
3 Examine the clamp and related hardware on the return tube below the locking actuator for cracks, gouges, holes, corrosion, loose or missing parts and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) (Ref. AMM TASK 78-31-50-400-801).
4 Examine the grommet on the torque box for cracks, gouges, holes, deterioration or other damage. If you find damage, replace the grommet (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
5 Examine the return tubes and track lock control tubes on the aft side of the torque box. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
6 Examine the clamps and related hardware for the return tubes and track lock control tube on the aft side of the torque box. Look for cracks, gouges, holes, corrosion, loose or missing parts, and other damage. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
7 Examine the grommet on the latch beam for cracks, gouges, holes, deterioration or other damage. If you find damage, replace the grommet (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801).
8 Manually retract the translating sleeve (Ref. AMM TASK 78-32-00-860-803).
(j) Examine the track lock.
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
2 Remove the track lock cover (Ref. AMM TASK 78-32-38-000-801).
3 Examine the track lock for cracks, corrosion, distortion, dents, deterioration or other damage. If you find damage, replace the track lock (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801) or contact UTAS for disposition.
4 Examine the grounding strap on the track lock for damage through the insulation to the wire, damaged or missing lugs, breaks, tears, cracks or other damage. Look for damaged or missing related hardware. If you find a damaged or missing part, replace the part (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801).
5 POST SB GRAA320NEO-A-78-30-0005-00001-930A-D
Examine the pin guard attached to the track lock. Look for gouges, cracks, holes, distortions, and other damage. If you find damage, replace the pin guard (Ref. AMM TASK 78-37-01-000-801) and (Ref. AMM TASK 78-37-01-400-801) or contact UTAS for disposition.
END OF POST SB GRAA320NEO-A-78-30-0005-00001-930A-D
6 Examine the track lock return tube, aft track lock return tube, and track lock control tube connections. Look for cracks, holes, gouges, dents, distortion, corrosion, and other damage. If you find damage, replace the damaged tube. (Ref. AMM TASK 78-31-50-000-801) and (Ref. AMM TASK 78-31-50-400-801) or contact UTAS for disposition.
7 Examine the TRAS monitoring harness connections for cracks, holes, corrosion, wear, or other damage. If you find damage, replace the harness (Ref. AMM TASK 78-31-61-000-811) and (Ref. AMM TASK 78-31-61-400-811), (Ref. AMM TASK 78-31-61-000-812) and (Ref. AMM TASK 78-31-61-400-812) or contact UTAS for disposition.
Subtask 78-31-00-860-090-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the track lock cover (Ref. AMM TASK 78-32-38-400-801).
(3) 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 78-31-00-440-056-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the track lock cover (Ref. AMM TASK 78-32-38-400-801).
(3) 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 78-31-00-410-063-A ** ON A/C NOT FOR ALL C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802)
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).
(4) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802)