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Fuel Tank Quantities (LBS)
Total Fuel Quantity
Center Wing Tank
Main Tanks 2 and 3 (each)
Main Tanks 1 and 4 (each)
Reserve Tanks (each)
- Total 359,000
- Center Wing Tank 115,000
- Main Tanks 2 and 3 (each) 84,000
- Main Tanks 1 and 4 (each) 29,000
- Reserve Tanks (each) 8,800
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Main Tank 2 and 3
60,000
40,000
20,000
60,000 Scavenge Pumps in Center Wing Tank scavenge fuel to tanks 2 and 3
40,000 Reserve tanks gravity feed to main tanks 2 and 3
20,000 During jettison only...tanks 1 and 4 gravity feed into Main Tanks 2 and 3 until Tanks 1 and 4 reach 7000lbs.
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Center Wing Tank
>17,000
<17,000
7,000
4,000
3,000
>17,000 Both Center Wing Tank switches must be ON for taxi, takeoff or climb.
<17,000 Both Center Wing Tank switches must be OFF for taxi, takeoff or climb.
7,000 FUEL LOW CTR L and or R EICAS message illuminates during climb...Turn OFF CWT pumps.
4,000 FUEL OVD CTR L and or R EICAS message illuminates during cruise...Turn ON CWT pumps.
3,000 FUEL LOW CTR L and or R EICAS message. Turn OFF CWT pumps. Scavenge pumps will scavenge remaining fuel into tanks 2 and 3.
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Stand Pipe Level
Main tanks 1,2,3,4
Each
Combined
7,000 lbs standpipe level.
28,000 combined.
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FUEL IMBALANCE
Outboard tanks 1 and 4 >inboard tanks 2 and 3 (after reaching FUEL TANK/ENG EICAS)
Between tanks 2 and 3
Between tanks 1 and 4
6,000-- Outboard tanks 1 and 4 >inboard tanks 2 and 3 (after reaching FUEL TANK/ENG EICAS)
6,000--Between tanks 2 and 3
6,000--Between tanks 1 and 4
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FUEL DISAGREE
FMS message on progress page 2
Fuel totalizer and calculated values disagree by 9,000 lbs or more. May indicate a fuel leak.
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FUEL QTY LOW
EICAS message
FUEL QTY LOW EICAS
2,000 or less in Main Tanks 1,2,3 or 4
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FUEL TEMP LOW
EICAS message
Fuel temp -37ºc or less
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