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‐ When the accuracy of the fuel quantity indication is degraded, two amber bars appear across
the last two digits.
‐ If the fuel is unusable (trim or outer tanks only), the quantity indication is displayed in an
amber box.
‐ The fuel quantity indication becomes amber, in case of low level (inner tank only) or a tank
overflow.
‐ In the event of imbalance of more than 3 000 kg (6 622 lb) between the left and right wing
tanks, fuel quantity pulses in the inner and outer tanks.
‐ Units may either be in KG or LB, depending on the DMC pin program.
(4) Collector cell fuel QTY indication
‐ It is normally green.
‐ When the fuel QTY indication is inaccurate, two amber bars appear across the last two
digits.
Units may either be in KG or LB, depending ‐ on the DMC pin program.
(5) Fuel on board QTY indication
‐ It is normally green.
‐ In case of degraded accuracy, the last two digits are dashed.
Note: In case any TK’s fuel is partially unusable, the QTY indication is displayed in a partial
amber box.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-28-20 P 28/38
FCOM 19 AUG 10
(6) Gross weight indication
‐ It is normally green.
‐ When the accuracy of the fuel QTY indication is degraded, two amber bars appear across
the last two digits.
‐ When the gross weight is not computed on ground, blue dashes appear.
‐ Units may either be in KG or LB, depending on the DMC pin program.
(7) CTR of GRVTY indication
‐ It is normally green.
‐ When the FMGC (FE part) detects an excess aft CG, it comes on red.
‐ When the CG is not computed on ground, blue dashes appear.
(8) Fuel temperature indication
‐ It is normally green.
‐ It is amber in the following cases :
• Inner tanks : Above 49 °C in flight, or 45 °C on ground.
• Outer or trim TKs : Below –40 °C.
• Inner tanks : Below –35 °C.
‐ It disappears when the tank quantity is below :
• 1 000 kg (2 200 lb) for the trim TK.
• 1 100 kg (2 420 lb) for the outer tank.
Note: Fuel temperature is not indicated for the right outer tank.
(9) ENG number
‐ It is white, when the ENG is running.
‐ It is amber, when the ENG is not running.
(10) Fuel Flow 1 + 2
‐ It is normally green.
‐ It is displayed using ECU or EEC indications.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-28-20 P 29/38
FCOM 19 AUG 10
Applicable to:
FUEL FEED, TRANSFER AND JETTISON INDICATIONS
(1) Engine LP valves indication
In line - Green : Valve is open.
In line - Amber : Valve is abnormally open.
Cross line - Amber : Valve is closed.
Transit - Amber : Valve is in transit.
(2) Engine feed pumps indication
In line - Green : Pump is running.
In line - Amber : Pump abnormally running.
Cross line - Amber : Pump not running.
"LO" - Amber : Pump pressure is low. Pump is on.
(3) Standby engine feed pumps indication
Are identical to the normal pump, except for pump not running.
Cross line - Green : Pump not running.
Cross line - Amber : Pump abnormally not running.
(4) Outer to inner transfer indication
▹􀀃Green􀀃:􀀃Normal􀀃transfer􀀃(auto).􀀃
▹􀀃Green􀀃:􀀃Manual􀀃transfer.􀀃
▹􀀃Amber􀀃:􀀃Abnormal􀀃transfer.􀀃
No display : No transfer.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-28-20 P 30/38
FCOM 19 AUG 10
(5) Center to inner transfer indication
Identical to the transfer from outer tanks.
(6) Center tank pumps indication
Identical to the standby wing tank pumps.
(7) Trim tank isolation indication
This valve represents the trim tank isolation valve and the trim tank inlet valve.
In line - Green : One valve is open.
Cross line - Green : Both valves are closed.
In line - Amber : One valve is abnormally open.
Cross line - Amber : Both valves are abnormally closed.
(8) Trim to center transfer indication
No display : No transfer.
Green : Manual forward ( ) transfer.
Green : Normal aft ( ) or forward ( ) transfer (auto).
Amber : Abnormal aft ( ) or forward ( ) transfer.
(9) Trim to inner transfer indication
No display : No transfer.
Green : Normal aft ( ) or forward ( ) transfer.
Amber : Abnormal aft ( ) or forward ( ) transfer.
　
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