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overflow.
‐ In the event of imbalance of more than 3 000 kg (6 622 lb) between the left and right wing
TKs, fuel QTY pulses in the INR 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 21/38
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.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-28-20 P 22/38
FCOM 19 AUG 10
Applicable to:
(1) FU indication (per ENG)
‐ It is normally green.
‐ If the fuel flow detection system fails, the FADEC computes a synthetic FU value.
‐ When this computed value is considered erroneous by more than 136 kg (300 lb), the
displayed value is crossed out with two amber bars.
‐ Units may either be in KG or LB, depending on the DMC pin program.
(2) Total FU indication
‐ It is normally green.
‐ When either “engine fuel used” is crossed, two amber bars appear across the value.
‐ Units may either be in KG or LB, depending on the DMC pin program.
(3) Fuel QTY indication
‐ It is normally green.
‐ 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.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
FUEL
CONTROLS AND INDICATORS
A330/A340 FLEET DSC-28-20 P 23/38
FCOM 19 AUG 10
‐ 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.
(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.
　
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