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Do not apply this procedure, if a fuel leak is suspected.
Refer to 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
ABN-28
2/4
AQU3I1CK8 R/AEF3E1RE9N/ACE3 H2A0ND/A B3O2OK1
ABNORMAL AND
EMERGENCY PROCEDURES 30 AUG 10
A318/A319/A320/A321 FLEET , , , , , , , ,
MSN,
FUEL LEAK
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 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.
�� CASE 1: IF ONE INNER TANK DEPLETES FASTER THAN THE OTHER
BY AT LEAST
300 kg (660 lb ) IN LESS THAN 30 min:
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
　
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