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B747 Oral Questions - 7) Engines

  1. EEC
    What does the EEC use as the controlling parameter for the GE engines?
    N1
  2. EEC
    What protection features are provided in the EEC Normal mode?
    • Thrust limiting
    • Maintains constant thrust
    • Over-speed protection
  3. EEC
    What occurs in the auto-throttle system when any EEC control is switched to alternate mode?
    The auto-throttles disconnect, but can be reconnected when all EEC's have been switched to alternate mode
  4. EEC
    What EEC normal mode protection feature is not available in EEC Alternate mode?
    Thrust limiting at max N1 (Max thrust can be achieved prior to thrust lever position at full forward
  5. EEC
    When does the EEC select approach idle?
    • Flaps in a landing position
    • Continuous ignition switch is ON
    • During thrust reverser operation
  6. EEC
    What action should be taken prior to manual selection of EEC alternate mode?
    Decrease thrust lever position (Thrust does not change when the EEC auto transfers control from normal mode to alternate mode)
  7. ENGINE/ENGINE START/IGNITION
    What happens when you turn the Continuous (CON) IGNITION Switch ON?
    • Selected igniters operate continuously
    • Commands approach idle minimum
  8. ENGINE/ENGINE START/IGNITION
    What 2 engine indications are displayed full time on the Primary EICAS?
    • N1
    • EGT
  9. ENGINE/ENGINE START/IGNITION
    What color does the EGT change to if the EGT start or t/o limit is reached?
    Red
  10. ENGINE/ENGINE START/IGNITION
    If the airbourne vibration monitoring system cannot determine the source of the vibration (FAN, LPT, NT) it will display "BB". What does this mean?
    Broadband (Broadband vibration is the average vibration detected)
  11. ENGINE/ENGINE START/IGNITION
    What 3 items will the autostart protect from during an engine start that also will result in an ENG 1, 2, 3, 4 AUTOSTART EICAS message?
    • Hot Start
    • Hung Start
    • No EGT rise
  12. ENGINE/ENGINE START/IGNITION
    How is the engine thrust reverser actuated on the GE B747-400F?
    Pneumatically actuated fan air
  13. ENGINE/ENGINE START/IGNITION
    With an engine shut down, what does "X-BLD" indicate when displayed next to the N2 indication?
    Crossbleed air is recommended for start
  14. ENGINE/ENGINE START/IGNITION
    When is ignition selected for all engines?
    • Trailing edge flaps are out of the up position
    • Continuous ignition switch is ON
  15. ENGINE/ENGINE START/IGNITION
    How many igniters are selected for ground start, and how many for an in-flight start?
    • Ground Start: 1
    • In-flight Start: 2
Author
Birddog370
ID
344904
Card Set
B747 Oral Questions - 7) Engines
Description
B747 Oral Questions Engines
Updated

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