Boeing 747-400 System

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Author:
coba
ID:
160770
Filename:
Boeing 747-400 System
Updated:
2012-07-02 15:57:29
Tags:
Boeing 747 400 System
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Description:
UPS 747-400 System Questions
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  1. How many Fuel Tanks are installed
    7
  2. What is the Fuel Quantity in a Reserve Tank
    9,000# each
  3. What is the Fuel Quantity in Main Tank 1 & 4 each
    29,000# each
  4. What is the Fuel Quantity in Main Tank 2 & 3 each
    84,000# each
  5. What is the Fuel Quantity in Center Tank
    115,000#
  6. What is the Total Fuel Quantity with ALL tanks full
    359,500#
  7. What is the Stand Pipe level
    7,000#
  8. When does Scavange of CWT begin and where does it scavange to?
    In to Main Tank 2 & 3 when they reach 60,000# each
  9. When does Reserve Tanks transfer and where
    In to Main Tanks 2 & 3 when they reach 40,000# each
  10. During Fuel Jettison,When does Main Tank 1 & 4 transfer and where?
    • In to Main Tank 2 & 3 when they reach 20,000# each
    • until Stand Pipe level (7,000#)
  11. When should the CWT O/J pumps be ON
    When CWT has more then 17,000# of fuel
  12. Climbing out, when will you get a message to turn CWT O/J pumps OFF
    When CWT reaches 7,000#
  13. At Cruise, when will you get a message to turn CWT O/J pumps ON
    When CWT indicates MORE then 4,000# after Level off
  14. When will you get a message to turn CWT O/J pumps OFF at Cruise
    • When CWT reaches 3,000#.
    • The ramaining 3,000# will scavange in to Main Tank 2 & 3 
  15. What is on the APU Standby Bus and how is it powered
    Left   FMC, PFD & ND

    • Powered by Capt Transfer Bus  (or APU HOT BAT Bus)
    • (Through AC Bus-3   (with AC Bus 1 as Backup)
  16. What is on MAIN Standby Bus and how is it powered
    Left  EFIS Control, Left Com, Left ILS / VOR Upper EICAS

    Powered by Main AC Bus-3  (or Main Hot Bat Bus) 
  17. What is on Capt Transfer Bus and how is it powered
    Left   HF, APU Standby Bus (for critical flight instruments)

     AC Bus-3 (or AC Bus-1)
  18. What is on FO's Transfer Bus and how is it powered
    FO's  PFD, ND, EFIS Control Panel, Lower EICAS

    AC Bus-2  (or AC Bus-1) 
  19. When is the Ground Handling Bus Powered and what equipment does it power
    • Only on Ground
    • With EXT-1 or APU-1  AVAILABLE (not ON)

    • Lower Cargo Doors
    • Service Lights
    • Fueling System
    • HYD Aux Pump-4
  20. When is the Ground Service Bus powered and what equipment does it power
    • Ground or Flight
    • Powered by AC Bus-1  (or Ground Handling Bus Switch)

    • Fuel Pumps for APU
    • Battery Charger
    • Flood lights
  21. When is the Main Deck Cargo Handling Bus powered and what equipment does it power
    • Powered on Ground only
    • when EXT-2 or APU-2 is AVAILABLE, (DONT select ON)

    • Main Deck doors
    • Cargo Handling Equipment

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