W DOC AIRBUS | AMM A320F

Refuel Procedure for use with an Unserviceable Magnetic Level Indicator (MLI)

TASK 28-40-00-040-012-A
Refuel Procedure for use with an Unserviceable Magnetic Level Indicator (MLI)

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.
1. Reason for the Job
MMEL 28-43-01B
MANUAL MAGNETIC INDICATORS
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
SAFETY BARRIER(S)
 B. Referenced Information
REFERENCE
DESIGNATION
TASK 12-11-28-650-004-A
Pressure Refuel with Manual Control
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 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-46-00-710-001-A
Test of the Tank High-Level Sensing-System
TASK 28-46-00-710-002-A
Test of the Additional Center Tank (ACT) High-Level-Sensing System
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 31-60-00-860-002-A
EIS Stop Procedure
3. Job Set-up
Subtask 28-40-00-941-071-A
A. Safety Precautions
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
   (1) You must obey the fuel safety procedures when you work on the fuel system (Ref. AMM TASK 28-00-00-910-001).
   (2) Put the SAFETY BARRIER(S) in position.
Subtask 28-40-00-860-075-A
B. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
   (2) Do the EIS start procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
   (3) On the ECAM control panel, push (in) the FUEL pushbutton switch to show the FUEL page on the ECAM lower display unit.
   (4) Make sure that the F.USED indications on the FUEL page are correctly shown.
4. Procedure
Subtask 28-40-00-040-085-A ** ON A/C NOT FOR ALL
A. Refuel Procedure for use with an Unserviceable Magnetic Level Indicator (MLI)
WARNING: BE CAREFUL NOT TO FILL THE TANKS MORE THAN NECESSARY NEAR THE END OF THE REFUEL PROCEDURE. WHEN YOU USE THE MANUAL OVERRIDE (MANUAL PLUNGER), THE HIGH-LEVEL PROTECTION SYSTEM WILL NOT STOP THE REFUELING AUTOMATICALLY. THUS THERE IS A RISK OF OVERFILLING AND FUEL SPILLAGE.
CAUTION: DO NOT REFUEL OR DEFUEL THROUGH THE TWO REFUEL/DEFUEL COUPLINGS AT THE SAME TIME. THIS IS TO PREVENT PRESSURE DIFFERENCE PROBLEMS.
CAUTION: DO NOT LET THE REFUEL PRESSURE BE MORE THAN THE MAXIMUM PRESSURE OF 50 PSI (3.45 BARS). IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE AIRCRAFT OR EQUIPMENT CAN OCCUR.
   (1) Do a test of the high level sensors (Ref. AMM TASK 28-46-00-710-001).
   (2) Refuel the aircraft as follows:
     (a) Fully refuel the wing tanks until:
     (b) Multiply the total volume of the fuel by the specific gravity of the fuel. The result is the total mass of the fuel.
     (c) Make sure that this total mass is equal to the maximum capacity of the applicable wing tank.
Subtask 28-40-00-040-085-C ** ON A/C NOT FOR ALL
A. Refuel Procedure for use with an Unserviceable MLI
WARNING: BE CAREFUL NOT TO FILL THE TANKS MORE THAN NECESSARY NEAR THE END OF THE REFUEL PROCEDURE. WHEN YOU USE THE MANUAL OVERRIDE (MANUAL PLUNGER), THE HIGH-LEVEL PROTECTION SYSTEM WILL NOT STOP THE REFUELING AUTOMATICALLY. THUS THERE IS A RISK OF OVERFILLING AND FUEL SPILLAGE.
CAUTION: DO NOT REFUEL OR DEFUEL THROUGH THE TWO REFUEL/DEFUEL COUPLINGS AT THE SAME TIME. THIS IS TO PREVENT PRESSURE DIFFERENCE PROBLEMS.
CAUTION: DO NOT LET THE REFUEL PRESSURE BE MORE THAN THE MAXIMUM PRESSURE OF 50 PSI (3.45 BARS). IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE AIRCRAFT OR EQUIPMENT CAN OCCUR.
   (1) Do a test of the high level sensors (Ref. AMM TASK 28-46-00-710-001).
   (2) Refuel the aircraft as follows:
     (a) Fully refuel the wing tanks until:
     (b) Multiply the total volume of the fuel by the specific gravity of the fuel. The result is the total mass of the fuel.
     (c) Make sure that this total mass is equal to the maximum capacity of the applicable wing tank.
5. Close-up
Subtask 28-40-00-860-076-A
A. Aircraft Configuration
   (1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
   (2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (3) Make a note in the aircraft technical log that the FQI system of the applicable wing is unserviceable.
Subtask 28-40-00-942-069-A
B. Removal of Equipment
   (1) Remove the SAFETY BARRIER(S).
   (2) Make sure that the work area is clean and clear of tools and other items.
[Rev.10 from 2021] 2026.04.02 06:18:03 UTC
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