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Stop any fuel transfer, and then monitor the depletion rate of each wing tank, to determine
if the leak is from an engine or a wing (case 1), or from the Center tank, or the APU feeding
line (case 2).
FUEL X FEED...........................................................................................MAINTAIN CLOSED
The crossfeed valve must remain closed to prevent the leak from affecting both sides.
CTR TK L+R XFR...............................................................................................................OFF
Each engine is fed via its associated wing tank only.
WING TANK FUEL QUANTITIES.............................................................................MONITOR
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A318/A319/A320/A321 FLEET PRO-ABN-28 P 38/42
FCOM 19 AUG 10
FUEL LEAK (Cont'd)
Monitor the depletion rate of each wing tank.
�� CASE 1: IF ONE WING TANK DEPLETES FASTER THAN THE OTHER BY AT
LEAST 300 kg (660 lb) IN LESS THAN 30 MINUTES:
An engine leak may still be suspected. Therefore:
THR LEVER (engine on leaking side)........................................................................ IDLE
ENG MASTER (engine on leaking side)......................................................................OFF
FUEL LEAK........................................................................................................ MONITOR
�� If leak stops:
If the wing tank fuel quantity of the affected side stops decreasing, the engine leak is
confirmed and stopped.
CTR TK L+R XFR................................................................................................... ON
FUEL X FEED..................................................................................... USE AS RQRD
The crossfeed valves can now be opened to re-balance fuel quantity, or to enable
use of fuel from both wings. Do not restart the engine.
�� If leak continues (after engine shutdown):
The wing tank fuel quantity of the affected side continues to decrease. If the leak has
not stopped after engine shut down, a leak from the wing may be suspected.
ENGINE RESTART....................................................................................CONSIDER
CTR TK XFR (non-leaking side)............................................................................. ON
CAUTION Do not apply the FUEL IMBALANCE procedure. Approach and landing
can be done, even with one full wing/one empty wing.
�� CASE 2: IF BOTH WING TANKS DEPLETE AT A SIMILAR RATE:
A leak from the Center tank or the APU feeding line may be suspected.
�� If fuel smell in the cabin:
APU (if ON)............................................................................................................OFF
This prevents additional fuel loss through the APU feeding line.
�� When fuel quantity in one wing tank is less than 3 tons (6600 lb):
CTR TK L+R XFR................................................................................................... ON
FOR LANDING
CAUTION Do not use reversers.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A318/A319/A320/A321 FLEET PRO-ABN-28 P 39/42
FCOM 19 AUG 10
FUEL IMBALANCE
Applicable to:
MSN,
FOB........................................................................................................................................ CHECK
Compare the FOB + FU, with the FOB at departure.
If the difference is significant, or if the FOB + FU decreases, suspect a fuel leak.
CAUTION A fuel imbalance may indicate a fuel leak.
Do not apply this procedure, if a fuel leak is suspected.
Refer to PRO-ABN-28 FUEL LEAK.
FUEL X FEED...............................................................................................................................ON
�� On the lighter side and in the center tank:
FUEL PUMPS.........................................................................................................................OFF
�� When fuel is balanced:
FUEL PUMPS (WING + CTR)................................................................................................. ON
FUEL X FEED........................................................................................................................ OFF
Note: There is no requirement to correct an imbalance, until the ECAM fuel advisory is
displayed.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A318/A319/A320/A321 FLEET PRO-ABN-28 P 40/42
FCOM 19 AUG 10
FUEL IMBALANCE
　
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