DOC AIRBUS | AMM A320FVisual Inspection of the Engine Bleed Air System (EBAS) after the Failure of the High Pressure Valve (HPV)
TASK 36-11-00-210-808-A
Visual Inspection of the Engine Bleed Air System (EBAS) after the Failure of the High Pressure Valve (HPV)
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 36-11-00-861-203-A ** ON A/C NOT FOR ALL Subtask 36-11-00-941-208-A ** ON A/C NOT FOR ALL
Subtask 36-11-00-210-070-A ** ON A/C NOT FOR ALL
Subtask 36-11-00-865-276-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 01:07:57 UTC
Visual Inspection of the Engine Bleed Air System (EBAS) after the Failure of the High Pressure Valve (HPV)
WARNING:
MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.
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:
ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.
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:
MAKE SURE THAT NO SOURCE OF COMPRESSED AIR IS IN OPERATION IN THE AIRCRAFT WHEN YOU DO THIS TASK. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONNEL CAN OCCUR.
1. Reason for the JobNOTE: The procedure that follows is specified only for EBAS 1 (LH EBAS). The equivalent procedure is applicable for EBAS 2 (RH EBAS).
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | 1 | BORESCOPE SET |
| No specific | 1 | LIGHT SOURCE - INSPECTION |
| No specific | 1 | MIRROR - INSPECTION, FLEXIBLE |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98D27803000000 | 1 | LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION |
| 98L12003001000 | AR | HARNESS,SAFETY |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 410 | ENG 1 PYLON BOX AND FORWARD FAIRING |
| 420 | ENG 2 PYLON BOX AND FORWARD FAIRING |
| 450 | ENG 1 THRUST REVERSER & EXHAUST SECTION |
| 460 | ENG 2 THRUST REVERSER & EXHAUST SECTION |
| 191DB | |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 413CT, 413DT, 413ET, 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 423CT, 423DT, 423ET, 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-41-00-861-002-A | Energize the Aircraft Electrical Circuits from the External Power |
| TASK 24-41-00-861-002-A-01 | Energize the Aircraft Electrical Circuits from the APU |
| TASK 24-41-00-861-002-A-02 | Energize the Aircraft Electrical Circuits from Engine 1(2) |
| TASK 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 27-00-00-080-002-A | Removal of the Flap/Slat Control-Lever Locking Tool (98D27803000000) |
| TASK 27-00-00-480-002-A | Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000) |
| TASK 36-11-41-000-802-A | Removal of the Environmental Control System (ECS) Mid-Y Duct and the Intermediate Pressure Check Valve (IPCV) |
| TASK 36-11-41-400-802-A | Installation of the Environmental Control System (ECS) Mid-Y Duct and the Intermediate Pressure Check Valve (IPCV) |
| TASK 36-11-42-000-802-A | Removal of the Bleed-Air Precooler Exchanger |
| TASK 36-11-42-400-802-A | Installation of the Bleed-Air Precooler Exchanger |
| TASK 36-11-51-400-802-A | Installation of the HP Bleed Valve (HPV) |
| TASK 36-11-52-000-802-A | Removal of the Bleed Pressure-Regulator Valve |
| TASK 36-11-52-400-802-A | Installation of the Bleed Pressure-Regulator Valve |
| TASK 36-11-53-000-802-A | Removal of the Overpressure Valve |
| TASK 36-11-53-400-802-A | Installation of the Overpressure Valve |
| TASK 36-22-00-790-802-A | Leak Check on all the Bleed Air Ducts and the Packs Components |
| 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 |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| TASK 54-52-11-000-805-A | Removal of the Access Skin Panels |
| TASK 54-52-11-400-805-A | Installation of the Access Skin Panels |
| TASK 54-53-11-000-804-A | Removal of the Pylon-to-Wing Access Panels and Doors |
| TASK 54-53-11-400-804-A | Installation of the Pylon-to-Wing Access Panels and Doors |
| 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 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| TASK 54-52-11-000-805-A | Removal of the Access Skin Panels |
| TASK 54-52-11-400-805-A | Installation of the Access Skin Panels |
| TASK 54-53-11-000-804-A | Removal of the Pylon-to-Wing Access Panels and Doors |
| TASK 54-53-11-400-804-A | Installation of the Pylon-to-Wing Access Panels and Doors |
| 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 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Engine Bleed-Air System - Location and DetailSubtask 36-11-00-861-203-A ** ON A/C NOT FOR ALL Subtask 36-11-00-941-208-A ** ON A/C NOT FOR ALL
B. Safety Precautions
(1) Make sure that the engine shutdown occurred five minutes or more before you do this procedure.
(2) In the cockpit, on AIR COND panel 30VU:
(a) The ENG 1 BLEED and ENG 2 BLEED pushbutton-switches are in the OFF position (the OFF legends are on).
(b) The APU BLEED pushbutton switch is in the OFF position (the ON legend is off).
(c) The PACK 1 and 2 pushbutton switches are in the OFF position (the OFF legends are on).
(d) Put a WARNING NOTICE(S) in position to tell persons not to operate the pneumatic system.
(3) In the cockpit, 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 and 2 control switches are 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 and 2 control switches.
(4) In the cockpit, on APU panel 25VU:
(a) Make sure that the FAULT and ON legends of the pushbutton switch MASTER SW are off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to start the APU.
(5) Open access door 191DB, on the HP ground connector:
(a) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the pneumatic system.
(6) In the cockpit, on the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR 1 and 2 pushbutton-switches are off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1 and 2.
(8) In the cockpit, on FLAPS panel 114VU:
(a) Put a 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
(b) Put the WARNING NOTICE(S) in position on the flap/slat control lever to tell persons not to operate the flap/slat controls.
Subtask 36-11-00-865-275-A ** ON A/C NOT FOR ALL (1) Make sure that the engine shutdown occurred five minutes or more before you do this procedure.
(2) In the cockpit, on AIR COND panel 30VU:
(a) The ENG 1 BLEED and ENG 2 BLEED pushbutton-switches are in the OFF position (the OFF legends are on).
(b) The APU BLEED pushbutton switch is in the OFF position (the ON legend is off).
(c) The PACK 1 and 2 pushbutton switches are in the OFF position (the OFF legends are on).
(d) Put a WARNING NOTICE(S) in position to tell persons not to operate the pneumatic system.
(3) In the cockpit, 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 and 2 control switches are 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 and 2 control switches.
(4) In the cockpit, on APU panel 25VU:
(a) Make sure that the FAULT and ON legends of the pushbutton switch MASTER SW are off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to start the APU.
(5) Open access door 191DB, on the HP ground connector:
(a) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the pneumatic system.
(6) In the cockpit, on the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR 1 and 2 pushbutton-switches are off.
(b) Put the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1 and 2.
WARNING:
BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
(7) Put on and attach the HARNESS, SAFETY before you start work in the work area.(8) In the cockpit, on FLAPS panel 114VU:
(a) Put a 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION in position on the flap/slat control lever (Ref. AMM TASK 27-00-00-480-002).
(b) Put the WARNING NOTICE(S) in position on the flap/slat control lever to tell persons not to operate the flap/slat controls.
C. Open, safety and tag this(these) circuit breaker(s):
Subtask 36-11-00-010-291-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 1000EM1 (ENGINE1) | |||
| 49VU | ENGINE/1/FADEC A/AND EIU 1 | 2KS1 | A04 |
| 49VU | AIR BLEED/APU BLEED VLV CTL/BMC1 OVRD | 11HV | D14 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1/FADEC B/AND EIU 1 | 4KS1 | R41 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1/FADEC B/AND EIU 1 | 4KS1 | R40 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
| FOR FIN: 1000EM2 (ENGINE2) | |||
| 49VU | ENGINE/2/FADEC A/AND EIU 2 | 2KS2 | A05 |
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/FADEC B/AND EIU2 | 4KS2 | Q40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/FADEC B/AND EIU2 | 4KS2 | R41 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
| 122VU | AIR BLEED/APU BLEED VLV CTL/BMC2 OVRD | 12HV | Z19 |
D. Get Access
(1) Open the fan cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-010-802).
Subtask 36-11-00-040-171-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-010-802).
E. Deactivation of the Thrust Reverser (T/R) System
Subtask 36-11-00-010-292-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) Make the T/R system unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-805). F. Get Access
(1) Open the T/R cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-010-802).
Subtask 36-11-00-010-293-A ** ON A/C NOT FOR ALL (1) Open the T/R cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-010-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-010-802).
G. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position.
(2) Remove these access panels:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
4. Procedure(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position.
(2) Remove these access panels:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
Subtask 36-11-00-210-070-A ** ON A/C NOT FOR ALL
A. Detailed Visual Inspection of the EBAS
(a) Do the borescope inspection of the ECS HP air-ducts (MID Y-Duct) for one of the signs of Foreign Object Damage (FOD):
(2) For the Pressure Regulating Valve (PRV), Overpressure Valve (OPV), header of the HP/LP T-duct and pylon ducts:
1 Visually examine the PRV for one of the signs of FOD:
(3) For bleed-air PreCooler Exchanger (PCE) 7150HM1 (7150HM2):
(a) Remove bleed-air PCE 7150HM1 (7150HM2) (Ref. AMM TASK 36-11-42-000-802).
(b) Visually examine the bleed-air PCE with an MIRROR - INSPECTION, FLEXIBLE and an LIGHT SOURCE - INSPECTION for one of the signs of FOD and the metallic debris:
(c) Install serviceable bleed-air PCE 7150HM1 (7150HM2) (Ref. AMM TASK 36-11-42-400-802).
5. Close-upNOTE: If the borescope length is sufficient to examine the remaining position from the removed valve holes:
- The parts of the valve removal is not necessary as the inspection is made by the borescope from the other valve holes.
NOTE: The visual quality of the borescope is important to have the sufficient visual precision during the inspection.
NOTE: Airbus recommends you to use a BORESCOPE SET for the borescope inspection.
(1) For the HPV and the Environmental Control System (ECS) HP ducts (MID Y-Duct):(a) Do the borescope inspection of the ECS HP air-ducts (MID Y-Duct) for one of the signs of Foreign Object Damage (FOD):
- If the metallic debris are found, remove metallic debris.
(2) For the Pressure Regulating Valve (PRV), Overpressure Valve (OPV), header of the HP/LP T-duct and pylon ducts:
NOTE: This procedure is applicable for the pipes from the HPV to the Intermediate Pressure (IP) bleed check-valve, OPV, Starter Air Valve (SAV) and PRV.
(a) Remove PRV 4001HA1 (4001HA2) (Ref. AMM TASK 36-11-52-000-802):1 Visually examine the PRV for one of the signs of FOD:
- Metallic debris are found stuck in the butterfly valve
- Dents and missing segments are present.
- Replace and install serviceable PRV 4001HA1 (4001HA2) (Ref. AMM TASK 36-11-52-400-802). Not to install the PRV at this step.
NOTE: This procedure is applicable for the air ducts from the OPV to the IP bleed check-valve, HPV and SAV.
- If metallic debris are found, remove metallic debris.
- Metallic debris are found stuck in the butterfly valve
- Dents and missing segments are present.
- Replace OPV 7115HM1 (7115HM2) (Ref. AMM TASK 36-11-53-000-802) and (Ref. AMM TASK 36-11-53-400-802).
- Metallic debris are found stuck in the butterfly valve
- Dents and missing segments are present.
- Replace the IP bleed check-valve (Ref. AMM TASK 36-11-41-000-802) and (Ref. AMM TASK 36-11-41-400-802).
(3) For bleed-air PreCooler Exchanger (PCE) 7150HM1 (7150HM2):
(a) Remove bleed-air PCE 7150HM1 (7150HM2) (Ref. AMM TASK 36-11-42-000-802).
(b) Visually examine the bleed-air PCE with an MIRROR - INSPECTION, FLEXIBLE and an LIGHT SOURCE - INSPECTION for one of the signs of FOD and the metallic debris:
- If FOD or metallic debris are found, remove metallic debris.
(c) Install serviceable bleed-air PCE 7150HM1 (7150HM2) (Ref. AMM TASK 36-11-42-400-802).
Subtask 36-11-00-865-276-A ** ON A/C NOT FOR ALL
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 36-11-00-790-089-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| FOR FIN: 1000EM1 (ENGINE1) | |||
| 49VU | ENGINE/1/FADEC A/AND EIU 1 | 2KS1 | A04 |
| 49VU | AIR BLEED/APU BLEED VLV CTL/BMC1 OVRD | 11HV | D14 |
| 49VU | AIR BLEED/ENG 1/CTL | 2HA1 | D11 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1/FADEC B/AND EIU 1 | 4KS1 | R41 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1/FADEC B/AND EIU 1 | 4KS1 | R40 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 1/MONG | 3HA1 | Z23 |
| 122VU | AIR BLEED/X FEED VALVE/NORM | 1HV | Z20 |
| FOR FIN: 1000EM2 (ENGINE2) | |||
| 49VU | ENGINE/2/FADEC A/AND EIU 2 | 2KS2 | A05 |
| 49VU | AIR BLEED/X FEED/VALVE/BAT | 2HV | D13 |
| 49VU | AIR BLEED/ENG 2/MONG | 3HA2 | D12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/FADEC B/AND EIU2 | 4KS2 | Q40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/FADEC B/AND EIU2 | 4KS2 | R41 |
| ** ON A/C NOT FOR ALL | |||
| 122VU | AIR BLEED/ENG 2/CTL | 2HA2 | Z22 |
| 122VU | AIR BLEED/APU BLEED VLV CTL/BMC2 OVRD | 12HV | Z19 |
B. Leak Test
(1) Do a leak test of the EBAS (Ref. AMM TASK 36-22-00-790-802):
(a) Make sure that there are no leaks.
Subtask 36-11-00-410-287-A ** ON A/C NOT FOR ALL (1) Do a leak test of the EBAS (Ref. AMM TASK 36-22-00-790-802):
(a) Make sure that there are no leaks.
C. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install these access panels:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
Subtask 36-11-00-410-288-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 these access panels:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
D. Close Access
(1) Close the T/R cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-410-802).
Subtask 36-11-00-440-159-A ** ON A/C NOT FOR ALL (1) Close the T/R cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL and 452AR (Ref. AMM TASK 78-36-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL and 462AR (Ref. AMM TASK 78-36-00-410-802).
E. Reactivation of the T/R System
(1) Make the T/R system serviceable after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 36-11-00-410-289-A ** ON A/C NOT FOR ALL (1) Make the T/R system serviceable after maintenance (Ref. AMM TASK 78-30-00-440-805).
F. Close Access
(1) Close the fan cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-410-802).
(2) Remove all the fixtures, tools, test and support equipment used during this procedure.
(3) Remove the access platform(s).
(4) In the cockpit, on FLAPS panel 114VU:
(a) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever (Ref. AMM TASK 27-00-00-080-002).
(5) Remove the WARNING NOTICE(S).
(6) Close access door 191DB.
Subtask 36-11-00-862-179-A ** ON A/C NOT FOR ALL (1) Close the fan cowl doors:
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL and 438AR (Ref. AMM TASK 71-13-00-410-802).
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL and 448AR (Ref. AMM TASK 71-13-00-410-802).
(2) Remove all the fixtures, tools, test and support equipment used during this procedure.
(3) Remove the access platform(s).
(4) In the cockpit, on FLAPS panel 114VU:
(a) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever (Ref. AMM TASK 27-00-00-080-002).
(5) Remove the WARNING NOTICE(S).
(6) Close access door 191DB.