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failed.
L1�� If either aft transfer valve failed open:
T TANK FEED.................................................................................................................ISOL
�� IF T TK FUEL UNUSABLE:
T TK UNUSBL PROC........................................................................................................ APPLY
L12
STATUS
�� WHEN SPD > 270 KT AND NOT IN CLIMB:
T TANK MODE................................................................ FWD
T TANK FEED............................................................... OPEN
Displayed if trim tank pump is failed or not installed.
L12
�� WHEN SPD > 270 KT AND NOT IN CLIMB:
T TANK MODE................................................................ FWD
T TANK FEED............................................................... OPEN
Displayed if the trim tank pump is failed.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A330/A340 FLEET PRO-ABN-28 P 45/98
FCOM 19 AUG 10
FUEL T TANK XFR FAULT
Applicable to:
T TANK MODE...........................................................................................................................FWD
L2 Displayed in all other cases.
L1 T TANK FEED...........................................................................................................................OPEN
L2 Fuel consumption is increased by approximately 1 %.
Either line (a) or (b) will be displayed.
Displayed if the trim tank isolation valve is failed closed or if the trim tank low level sensor is failed.
Note: 1. If the trim tank pump is failed or not installed, the above procedure is preceded by:
WHEN SPD > 270 kt AND NOT IN CLIMB:
2. If forward transfer is initiated by T TANK FEED sw, do not completely empty the trim
tank (below around 200 kg). This avoids drainage of the trim line and so ensures APU
supply.
L1�� If either aft transfer valve is failed open:
FUEL IMBALANCE....................................................................................................... MONITOR
�� IF TRIM TK QUANTITY NOT DECREASING:
T TANK MODE..............................................................................................................AUTO
T TANK FEED.................................................................................................................ISOL
T TK FUEL UNUSABLE
L2 These steps prevent uncommanded aft transfer via a failed aft transfer valve.
L1�� WHEN T TANK EMPTY:
T TANK FEED..................................................................................................................... AUTO
L2 Displayed if the trim tank isolation valve is failed closed or if the trim tank low level sensor is
failed.
L1 T TANK MODE.................................................................................................................... AUTO
L2 Displayed in all other cases.
L1�� If either aft transfer valve failed open:
T TANK FEED.................................................................................................................ISOL
�� IF T TK FUEL UNUSABLE:
T TK UNUSBL PROC........................................................................................................ APPLY
To be continued on next page
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A330/A340 FLEET PRO-ABN-28 P 46/98
FCOM 19 AUG 10
FUEL T TANK XFR FAULT (Cont'd)
L12
�� WHEN SPD > 270 KT AND NOT IN CLIMB:
T TANK MODE................................................................ FWD
T TANK FEED............................................................... OPEN
Displayed if the trim tank pump is failed.
FUEL TRIM TANK LINE FAULT
(DAMAGE ON THE TRIM LINE)
Applicable to: ,
L2 This caution is triggered in case of damage on the trim line.
L1 TRIM LINE ISOLATED
APU MASTER SW........................................................................................................................OFF
STATUS
INOP SYS
FUEL AFT XFR
APU (When TTK isol)
FUEL TRIM TANK LINE FAULT
(DAMAGE ON THE TRIM LINE)
Applicable to: MSN ,
,
L2 This caution is triggered in case of damage on the trim line.
L1 TRIM LINE ISOLATED
APU MASTER SW........................................................................................................................OFF
To be continued on next page
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
FUEL
A330/A340 FLEET PRO-ABN-28 P 47/98
FCOM 19 AUG 10
FUEL TRIM TANK LINE FAULT (Cont'd)
　
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