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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 PUMP 1+2............................................................................................................OFF
Each engine is fed via its associated inner tank only.
INNER TANK FUEL QUANTITIES........................................................................... MONITOR
Monitor the depletion rate of each inner tank.
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 34/42
FCOM 19 AUG 10
FUEL LEAK (Cont'd)
�� CASE 1: IF ONE INNER 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
CTR TK PUMP 1+2....................................................................................................... ON
FUEL LEAK........................................................................................................ MONITOR
�� If leak stops:
If the inner tank fuel quantity of the affected side stops decreasing, the engine leak is
confirmed and stopped.
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 inner 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
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 INNER 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 inner tank is less than 3 tons (6600 lb):
CTR TK PUMP 1+2.................................................................................................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 35/42
FCOM 19 AUG 10
FUEL LEAK
Applicable to:
A fuel leak may be detected, if:
The sum of FOB and FU significantly less than FOB at engine ‐ start or is decreasing, or
A passenger observes fuel spray from ‐ engine/pylon or wing tip, or
‐ The total fuel quantity is decreasing at an abnormal rate, or
‐ A fuel imbalance is developing, or
‐ Fuel quantity in a tank is decreasing too fast (leak from engine/pylon, or hole in a tank), or
‐ The Fuel flow is excessive (leak from engine), or
‐ Fuel is smelt in the cabin.
‐ The destination EFOB turns to amber on the F-PLN (or on the FUEL PRED) page, or
‐ ”DEST EFOB BELOW MIN” appears on the MCDU scratchpad.
If visibility permits, leak source may be identified by a visual check from the cabin.
WHEN A LEAK IS CONFIRMED
LAND ASAP
�� LEAK FROM ENGINE/PYLON CONFIRMED:
Engine fuel leak can be confirmed by excessive fuel flow indication, or a visual check.
THR LEVER (of affected engine)...................................................................................... IDLE
ENG MASTER (of affected engine)....................................................................................OFF
FUEL X FEED.................................................................................................. USE AS RQRD
If the leak stops, the crossfeed valve can now be opened to re-balance fuel quantity, or to
enable use of fuel from both wings. Do not restart the engine.
�� LEAK FROM ENGINE/PYLON NOT CONFIRMED or LEAK NOT LOCATED:
Stop any fuel transfer, and then monitor the depletion rate of each inner tank, to determine
　
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