W DOC AIRBUS | AMM A320F

General Visual Inspection of Internal Tank Wiring and Probe Attachments (SFAR88)

TASK 28-18-44-210-001-A
General Visual Inspection of Internal Tank Wiring and Probe Attachments (SFAR88)

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.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
ZONE: 140
ZONE: 540
ZONE: 550
ZONE: 640
ZONE: 650
1. Reason for the Job
Refer to the MPD TASK: 281800-04
GENERAL VISUAL INSPECTION OF INTERNAL TANK WIRING AND PROBE ATTACHMENTS (SFAR88)
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
1
LIGHT SOURCE - SPARK-PROOF
No specific
AR
SAFETY BARRIER(S)
No specific
1
WARNING NOTICE(S)
98D27803500001
1
LOCKING TOOL ZERO POS
98D57004013000
1
HOOK-COVER (RIB 2 SURGE DOORS)
98D57004014000
1
HOOK-COVER (RIB2-SURGE DOORS)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
140
CENTER WING
540
FUEL TANK
550
VENT SURGE TANK
640
FUEL TANK
650
VENT SURGE TANK
147AZ, 148AZ, 540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 540HB, 540JB, 540KB, 540LB, 540MB, 540NB, 540PB, 540QB, 540RB, 550AB, 550BB, 550CB, 550DB, 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB, 640HB, 640JB, 640KB, 640LB, 640MB, 640NB, 640PB, 640QB, 640RB, 650AB, 650BB, 650CB, 650DB
540AZ, 540BZ, 640AZ, 640BZ
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 12-11-28-650-003-A
Pressure Refuel with Automatic Control
TASK 28-10-00-910-001-A
Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-25-00-650-001-A
Pressure Defuel
TASK 28-25-00-650-003-A
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-42-15-000-001-A
Removal of the Wing Tank Fuel-Quantity-Probes
TASK 28-42-15-000-001-B
Removal of the Wing-Tank Fuel-Quantity Probes
TASK 28-42-15-000-002-A
Removal of the Center Tank Fuel-Quantity-Probe
TASK 28-42-15-000-004-A
Removal of the Center (Transfer) Tank Fuel-Quantity Probes
TASK 28-42-15-000-005-A
Removal of the Wing-Tank Fuel-Quantity Probes
TASK 28-42-15-400-001-A
Installation of the Wing Tank Fuel-Quantity-Probes
TASK 28-42-15-400-001-B
Installation of the Wing-Tank Fuel-Quantity Probes
TASK 28-42-15-400-002-A
Installation of the Center Tank Fuel-Quantity-Probe
TASK 28-42-15-400-004-A
Installation of the Center (Transfer) Tank Fuel-Quantity Probe
TASK 28-42-15-400-005-A
Installation of the Wing-Tank Fuel-Quantity Probes
TASK 57-17-11-000-001-A
Removal of Access Cover 147AZ(148AZ)
TASK 57-17-11-000-001-B
Removal of Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-400-001-A
Installation of Access Cover 147AZ(148AZ)
TASK 57-17-11-400-001-B
Installation of Access Cover 148AZ or/and the ACT-Equipment Support-Door
TASK 57-27-11-000-001-A
Removal of the Access Panel
TASK 57-27-11-000-002-A
Removal of the Access Panel
TASK 57-27-11-400-001-A
Installation of the Access Panel
TASK 57-27-11-400-002-A
Installation of the Access Panel
TASK 57-27-12-000-002-A
Removal of the Rib 2 Access Panel 540AZ(640AZ) or 540BZ(640BZ)
TASK 57-27-12-400-002-A
Installation of the Rib 2 Access Panel 540AZ (640AZ) or 540BZ (640BZ)
F Wing Tank Harness - Cable Routing ** ON A/C NOT FOR ALL
F Wing Tank Inner Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Outer Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Harness 57QT(58QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 57QT(58QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 63QT(64QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 63QT(64QT) - Component Location ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Inner Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Outer Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 28-18-44-941-050-A
A. Safety Precautions
WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
   (1) You must obey the fuel safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001).
   (2) Put the SAFETY BARRIER(S) in position.
   (3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flaps or slats.
   (4) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
Subtask 28-18-44-650-050-A
B. Aircraft Maintenance Configuration
   (1) Defuel the applicable fuel tanks (Ref. AMM TASK 28-25-00-650-001).
   (2) Drain the remaining fuel from the applicable fuel tanks (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-18-44-010-050-B ** ON A/C NOT FOR ALL
C. Get Access
   (1) Remove the applicable access panels:
     (a) For the LH wing remove:
     (b) For the RH wing remove:
     (c) For the center tank remove:
   (2) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable zone 540(640).
   (3) Open the fuel-surge access doors on Rib 2 as follows:
     (a) Open the FWD fuel-surge door 540AZ(640AZ) and hold it in position with the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS).
     (b) Open the AFT fuel-surge door 540BZ(640BZ) and hold it in position with the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS).
Subtask 28-18-44-010-050-C ** ON A/C NOT FOR ALL
C. Get Access
   (1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable zone 540 (640).
   (2) Remove the applicable access panels that follow:
     (a) For the left wing:
     (b) For the right wing:
     (c) For the center tank:
   (3) Remove the applicable RIB2 access panels that follow:
     (a) For the left wing, remove 540AZ and 540BZ (Ref. AMM TASK 57-27-12-000-002).
     (b) For the right wing, remove 640AZ and 640BZ (Ref. AMM TASK 57-27-12-000-002).
4. Procedure
Subtask 28-18-44-210-050-B ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT ALL CABLES IN FUEL TANKS ARE CORRECTLY SUPPORTED (BY CLIPS AND OTHER SUPPORTS). IF CLIPS OR SUPPORTS ARE MISSING OR DAMAGED, YOU MUST REPLACE THEM.
WARNING: MAKE SURE THAT THE INSTALLATION AND ROUTING OF ALL ELECTRICAL CABLES AGREE WITH THE REQUIREMENTS OF THE ELECTRICAL STANDARD PRACTICES MANUAL.
WARNING: DO NOT REPAIR CABLES THAT ARE IN FUEL TANKS. DO NOT MAKE IN-LINE SPLICES. IF A CABLE IS DEFECTIVE, YOU MUST REPLACE THE FULL CABLE ASSEMBLY.
A. General Visual Inspection of Internal Tank Wiring and Probe Attachments

F Wing Tank Harness - Cable Routing ** ON A/C NOT FOR ALL
F Wing Tank Inner Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Outer Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
   (1) Do a visual inspection of the tank wiring harnesses as follows:
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the tank wiring harnesses. Make sure that:
  • there is no sign of wear or damage to the harness or harness connections
  • there is no sign of corrosion on the harness connections
  • the harness insulation is in good condition
  • the harness clamps and brackets are all correctly installed.
NOTE: If wear or damage is found, refer to the Electrical Standard Practices Manual for data.
   (2) Do a visual inspection of the fuel quantity probes as follows:
NOTE: Do an inspection of all the fuel quantity probes in the bay that you are in. There will not be a fuel quantity probe in all bays of the fuel tanks.
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the fuel quantity probes. Make sure that:
  • there is no sign of damage to the probes
  • there is no sign of corrosion on the probe connections
  • the probe clamps and brackets are all correctly installed.
     (b) Replace all probes that are not in the correct condition:
Subtask 28-18-44-210-050-C ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT ALL CABLES IN FUEL TANKS ARE CORRECTLY SUPPORTED (BY CLIPS AND OTHER SUPPORTS). IF CLIPS OR SUPPORTS ARE MISSING OR DAMAGED, YOU MUST REPLACE THEM.
WARNING: MAKE SURE THAT THE INSTALLATION AND ROUTING OF ALL ELECTRICAL CABLES AGREE WITH THE REQUIREMENTS OF THE ELECTRICAL STANDARD PRACTICES MANUAL.
WARNING: DO NOT REPAIR CABLES THAT ARE IN FUEL TANKS. DO NOT MAKE IN-LINE SPLICES. IF A CABLE IS DEFECTIVE, YOU MUST REPLACE THE FULL CABLE ASSEMBLY.
A. General Visual Inspection of Internal Tank Wiring and Probe Attachments

F Wing Tank Harness 57QT(58QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 57QT(58QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 63QT(64QT) - Component Location ** ON A/C NOT FOR ALL
F Wing Tank Harness 63QT(64QT) - Component Location ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
   (1) Do a visual inspection of the tank wiring harnesses as follows:
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the tank wiring harnesses. Make sure that:
  • there is no sign of wear or damage to the harness or harness connections
  • there is no sign of corrosion on the harness connections
  • the harness insulation is in good condition
  • the harness clamps and brackets are all correctly installed.
NOTE: If wear or damage is found, refer to the Electrical Standard Practices Manual for data.
   (2) Do a visual inspection of the fuel quantity probes as follows:
NOTE: Do an inspection of all the fuel quantity probes in the bay that you are in. There will not be a fuel quantity probe in all bays of the fuel tanks.
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the fuel quantity probes. Make sure that:
  • there is no sign of damage to the probes
  • there is no sign of corrosion on the probe connections
  • the probe clamps and brackets are all correctly installed.
     (b) Replace all probes that are not in the correct condition:
Subtask 28-18-44-210-050-D ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT ALL CABLES IN FUEL TANKS ARE CORRECTLY SUPPORTED (BY CLIPS AND OTHER SUPPORTS). IF CLIPS OR SUPPORTS ARE MISSING OR DAMAGED, YOU MUST REPLACE THEM.
WARNING: MAKE SURE THAT THE INSTALLATION AND ROUTING OF ALL ELECTRICAL CABLES AGREE WITH THE REQUIREMENTS OF THE ELECTRICAL STANDARD PRACTICES MANUAL.
WARNING: DO NOT REPAIR CABLES THAT ARE IN FUEL TANKS. DO NOT MAKE IN-LINE SPLICES. IF A CABLE IS DEFECTIVE, YOU MUST REPLACE THE FULL CABLE ASSEMBLY.
A. General Visual Inspection of Internal Tank Wiring and Probe Attachments

F Wing Tank Harness - Cable Routing ** ON A/C NOT FOR ALL
F Wing Tank Inner Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Wing Tank Outer Cell Harness - Location and Detail ** ON A/C NOT FOR ALL
F Vent Surge Tank Harness - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 17QT - Location and Detail ** ON A/C NOT FOR ALL
F Center Tank Harness 18QT - Location and Detail ** ON A/C NOT FOR ALL
   (1) Do a visual inspection of the tank wiring harnesses as follows:
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the tank wiring harnesses. Make sure that:
  • There is no sign of wear or damage to the harness or harness connections
  • There is no sign of corrosion on the harness connections
  • The harness insulation is in good condition
  • The harness clamps and brackets are all correctly installed.
NOTE: If wear or damage is found, refer to the Electrical Standard Practices Manual for data.
   (2) Do a visual inspection of the fuel quantity probes as follows:
NOTE: Do an inspection of all the fuel quantity probes in the bay that you are in. There will not be a fuel quantity probe in all bays of the fuel tanks.
     (a) Use a LIGHT SOURCE - SPARK-PROOF to examine all of the fuel quantity probes. Make sure that:
  • There is no sign of damage to the probes
  • There is no sign of corrosion on the probe connections
  • The probe clamps and brackets are all correctly installed.
     (b) Replace all probes that are not in the correct condition:
5. Close-up
Subtask 28-18-44-410-050-B ** ON A/C NOT FOR ALL
A. Close Access
   (1) Remove the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) and close the FWD fuel-surge door 540AZ(640AZ).
   (2) Remove the 98D57004014000 HOOK-COVER (RIB2-SURGE DOORS) and close the AFT fuel-surge door 540BZ(640BZ).
   (3) Make sure that the work area is clean and clear of tool(s) and other items.
   (4) Install the applicable access panels:
     (a) For the LH wing install:
     (b) For the RH wing install:
     (c) For the center tank install:
Subtask 28-18-44-410-050-C ** 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) Install the applicable RIB2 access panels that follow:
     (a) For the left wing, install 540AZ and 540BZ (Ref. AMM TASK 57-27-12-400-002).
     (b) For the right wing, install 640AZ and 640BZ (Ref. AMM TASK 57-27-12-400-002).
   (3) Install the applicable access panels that follow:
     (a) For the left wing:
     (b) For the right wing:
     (c) For the center tank:
Subtask 28-18-44-650-051-A
B. Fuel Configuration
   (1) Refuel the aircraft (Ref. AMM TASK 12-11-28-650-003).
Subtask 28-18-44-942-050-A
C. Removal of Equipment
   (1) Remove the safety barriers.
   (2) Remove the access platform(s).
   (3) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
   (4) Remove the WARNING NOTICE(S).
   (5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.02 06:17:20 UTC
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