DOC AIRBUS | AMM A320FGeneral Visual Inspection of the EWIS Installed in the Upper Forward Pylon (EWIS)
TASK 24-92-00-210-819-A
General Visual Inspection of the EWIS Installed in the Upper Forward Pylon (EWIS)
1. Reason for the Job
Refer to the MPD TASK: 200413-05
GENERAL VISUAL INSPECTION OF EWIS INSTALLED IN THE UPPER FORWARD PYLON (EWIS)
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 24-92-00-941-079-A
Subtask 24-92-00-210-124-A
Subtask 24-92-00-410-205-A
[Rev.10 from 2021]
2026.03.31 23:26:51 UTC
General Visual Inspection of the EWIS Installed in the Upper Forward Pylon (EWIS)
1. Reason for the Job
Refer to the MPD TASK: 200413-05
GENERAL VISUAL INSPECTION OF EWIS INSTALLED IN THE UPPER FORWARD PYLON (EWIS)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE |
| No specific | 1 | FLASHLIGHT |
| No specific | 1 | MIRROR - INSPECTION, FLEXIBLE |
| No specific | AR | WARNING NOTICE(S) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 413 | UPPER FWD PYLON |
| 414 | UPPER FWD PYLON |
| 423 | UPPER FWD PYLON |
| 424 | UPPER FWD PYLON |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1) | |
| 411AL, 414AR, 414BR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2) | |
| 421AL, 424AR, 424BR, 424CR | |
| REFERENCE | DESIGNATION |
|---|---|
| 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 54-52-11-000-807-A | Removal of the Access Skin Panels |
| TASK 54-52-11-400-807-A | Installation of the Access Skin Panels |
| ESPM 2052110 | |
Upper Forward Pylon - Access PanelsSubtask 24-92-00-941-079-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 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 a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 24-92-00-862-165-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 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 a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
B. Make sure that the aircraft electrical circuits are de-energized
(Ref. AMM TASK 24-41-00-862-002).
Subtask 24-92-00-010-198-A (Ref. AMM TASK 24-41-00-862-002).
C. Get Access
(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at the upper forward pylon.
(2) Remove the access skin panels (Ref. AMM TASK 54-52-11-000-807):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL 414AR 414BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL 424AR 424BR 424CR.
4. Procedure(1) Put an ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at the upper forward pylon.
(2) Remove the access skin panels (Ref. AMM TASK 54-52-11-000-807):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL 414AR 414BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL 424AR 424BR 424CR.
Subtask 24-92-00-210-124-A
A. General Visual Inspection of the EWIS Installed in the Upper Forward Pylon
(1) Do a visual inspection of the wiring to make sure that there is no signs of ageing, alteration, overheating, scaling and deformation ESPM 2052110:
(a) On AC/DC feeder routes 1G and 2G
(b) On engine control routes 1S and 2S
(c) On routes 1M and 2M
(d) On generator excitation routes 1E and 2E.
1 Use a FLASHLIGHT or a MIRROR - INSPECTION, FLEXIBLE, if necessary.
(2) Make sure that there is no dust, fuel, oil or hydraulic contamination.
5. Close-up(1) Do a visual inspection of the wiring to make sure that there is no signs of ageing, alteration, overheating, scaling and deformation ESPM 2052110:
(a) On AC/DC feeder routes 1G and 2G
(b) On engine control routes 1S and 2S
(c) On routes 1M and 2M
(d) On generator excitation routes 1E and 2E.
1 Use a FLASHLIGHT or a MIRROR - INSPECTION, FLEXIBLE, if necessary.
(2) Make sure that there is no dust, fuel, oil or hydraulic contamination.
Subtask 24-92-00-410-205-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access skin panels (Ref. AMM TASK 54-52-11-400-807):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL 414AR 414BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL 424AR 424BR 424CR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access skin panels (Ref. AMM TASK 54-52-11-400-807):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
411AL 414AR 414BR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
421AL 424AR 424BR 424CR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).