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Fuel

  1. How many fuel tanks does the aircraft have?
    2 integral fuel tanks (1 in each wing)
  2. What makes up the fuel tanks?
    Collector tank in the inboard section and a surge tank on the outboard.
  3. Where are the fuel parameters and indications displayed?
    MFD synoptic page and the EICAS
  4. What would be the indication of a fuel imbalance?
    FUEL IMBALANCE EICAS msg is displayed when the imbalance reaches 800lbs. Until the imbalance is reduced to 100lbs
  5. What is the MAX FUEL IMBALANCE between tanks?
    790 lbs
  6. Can the aircraft be over wing refueled?
    Yes, by 2 gravity refueling ports, one on each wing
  7. Where is the refueling door located?
    Right wing
  8. Can you refuel the aircraft without APU/EXT power? How is the aircraft panel powered without APU/EXT power?
    • Yes
    • Hot batt bus 2
  9. Where is the fuel temp taken from?
    Left wing
  10. What type of fuel pumps are in each wing?
    • 1 primary ejector pump
    • 1. AC electric pump
    • 1 DC electric pump (right wing only)
    • 3 scavenge pumps
  11. What is the primary ejector pump?
    A pump that is powered by motive flow and requires no electrical power to operate.
  12. With the engines running, through which pumps are the engines and APU fed?
    Primary ejector pumps
  13. What is the purpose of the AC fuel pump?
    • Backup pump, supplying fuel to the engine in the event of ejector pump failure or during engine start.
    • Supply fuel to the APU when the engine is not running.
    • Crossfeed operations
  14. When will the AC fuel pump turn on automatically?
    • Crossfeed operations
    • Ejector pump failure
    • Engine start
    • APU operations
  15. APU normally gets fuel from where?
    Right tank
  16. How many ways to close the fuel SOV? What closes that valve?
    • 1
    • Pulling the associated fire ext handle
  17. Regarding fuel, what happens when the respective fire handle is pulled?
    Respective fuel SOV closes
  18. The DC FUEL PUMP is located where and can be used for what?
    • Right fuel tank
    • Can be used in flight or on the ground
  19. Why do we have a DC fuel pump?
    Provides pressurized fuel for normal APU operations and engine start when AC power or the AC fuel pump is not available.
  20. What is the purpose of the scavenge pumps?
    Maintains fuel level in the collector tank.
  21. What pump is used when the engine is started?
    Primary ejector pumps
  22. What is the pump system logic for normal operations?
    • Primary ejector pump
    • AC pump
    • DC pump
  23. What is the purpose of the collector tank?
    • Keeps the fuel pumps submerged
    • Ensures constant fuel flow to the respective engine.
  24. When does the X feed open automatically? Can fuel be transferred tank to tank or dumped overboard?
    • During refueling operations
    • No
  25. How would you correct a fuel imbalance?
    Position the crossfeed selector knob to the low side tank as required
  26. Explain how crossfeed works?
    Opens the crossfeed valve and automatically turns on the opposite AC fuel pump.
  27. When must the crossfeed selector be set to off?
    During TO and LAND
  28. Will setting the AC PUMP selector knob to any position other than auto override the fuel crossfeed commands?
    Yes
  29. What are the alternate means of measuring fuel on the ground?
    3 magnetic level indicators
Author
APM
ID
359918
Card Set
Fuel
Description
Updated

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