SF340 Flight Controls

  1. How are the primary flight controls operated? 8-1
  2. How are the Trims operated? 8-1
  3. How are the Flaps operated? 8-1
  4. What joins the ailerons together? 8-1
    Aileron Interconnect unit
  5. Which side aileron trim is operated when the main trim is used? 8-1
    Left side
  6. Which side aileron trim is operated if the Standby trim is used? 8-1
    Right side
  7. What makes up the Interconnect unit? 8-2
    A friction device to hold the two ailerons together
  8. How can the ailerons be reconnected after the roll disconnect has been pulled? 8-2
    Only by maintenance on the ground
  9. How are the two elevators joined together? 8-2
    Elevator Interconnect unit
  10. Which elevator trim moves when the yoke mounted trim switch is moved? 8-4
    Both main and standby when PITCH TRIM is synched
  11. What allows the main and standby trims to operate together? 8-4
    The pitch trim synchronizer
  12. How are the Main and Standby trims separated from each other? 8-4
    By operating the Standby trim switch
  13. How are the main and Standby trims tied together? 8-4
    Pitch trim synchronizer
  14. If the left control wheel trim switch is operated and the right wheel switch operated in the other direction how do the trims respond? 8-5
    The Captain’s trim will override the FO’s trim
  15. When would you get a CONFIG CWP light? 8-6 (Also Warning Systems)
    • During T/O when:
    • Pitch trims are out of takeoff range, “green arc”
    • Condition levers not at Max
    • Flaps are beyond 15º
    • When attempting to start the #1 engine and the FI Stop Override switch is pulled.
  16. If takeoff is attempted with the trims outside of the green arc what happens? 8-6
    • Master Warning,
    • and Intermittent Horn
  17. A stall warning is provided by what simultaneous indications? 8-6
    • An Aural Clacker
    • A Stick Shaker
  18. At Stall Threshold what happens? 8-6
    The Stick Pusher activates
  19. How much pressure does the Stick Pusher generate? 8-6
    80 pounds of force
  20. What lights will illuminate as the Stick Pusher activates? 8-6
    PUSH 1 and PUSH 2 on both sides of the panel
  21. How is the Stick Pusher Overridden? 8-6
    By overpowering the 80lbs of force
  22. What are the 3 warning signs of a stall? 8-6
    • Stick shaker,
    • clacker,
    • and push lights
  23. How is the Stick Pusher deactivated? 8-7
    • Reduce the Angle of Attack
    • Pressing the PUSHER DISARM button
  24. What is being checked when the stall test switches are both pushed down? 8-7
    The .5g sensor is functioning properly, and the pusher does not activate
  25. When testing the stall system what is being checked? 8-7
    • Associated PUSH light illuminates
    • Aural alert (clacker)
    • Stick shaker
    • With both switches up stick pusher activates along with PUSH 1 and PUSH 2
    • With both switches down pusher does not activate with PUSH 1 and PUSH 2
  26. How can the Pusher System be reset after deactivation? 8-7
    Only by maintenance
  27. When is the Stick Pusher inhibited? 8-7
    • While on the ground
    • After takeoff for 7 seconds
    • Anytime load factor is less than .5g
  28. What angle does the Stick Pusher move the elevator to? 8-7
    4º nose down
  29. How long is the Stick Pusher sustained for? 8-7
    • As long as the excessive AOA exist
    • Load factor less than .5g
  30. What does a STALL FAIL CWP light indicate? 8-8
    A fault detected in a stall warning/ident computer
  31. What is the purpose of the Rudder Limiter? 8-11
    To limit rudder travel at high airspeeds
  32. What are the speed and travel limits of the Rudder Limit system? 8-11
    • Full travel (up to 30º) at speeds up to 150 knots
    • Intermediate travel (up to 15º) at speeds between 150-200 Knots
    • Minimum travel (up to 5.7º) at speeds above 200 Knots
  33. What does a RUDDER LIMIT CWP light indicate? 8-11
    Discrepancies between monitored Airspeeds or an improperly positioned limiting mechanism
  34. What is the Purpose of the RUD LIM switch? 8-11
    In OVRD, allows full rudder travel by retracting rudder limiting mechanism
  35. What is ‘Flap blow-back’? 8-13
    A design feature that allows the flaps to retract at excessive airspeeds in order to prevent flap damage.
  36. Are the flaps operated as a single unit? 8-13
    No, they are 2 individual flaps operated by a single HYDR. actuator for each flap
  37. What keeps the flaps from a split flap condition? 8-13
    A mechanical Interconnection
  38. What are the flap detent settings? 8-14
    0, 7, 15, 20, and 35 degrees
  39. What is indicated by an illuminated FLAPS CWP light? 8-14
    • Failure of the flap controller
    • Disagreement between Flap handle selection and left Flap position
  40. Does a split flap automatically trigger a FLAPS CWP light? 8-14
    No, if the left flap agrees then no light
  41. If the flap controller fails what are the indications? 8-14
    • FLAPS CWP light
    • Master Caution
    • Flaps become locked in position without further control
  42. With a flap controller failure how could the crew verify flap position? 8-14
    By use of the flap angle marks on the flap
  43. At what settings are the gates located during flap retraction? 8-14
    7 and 20 degrees
  44. What position do the Gust locks fail to? 8-18
  45. How do the GUST LOCKS prohibit Takeoff while engaged? 8-18
    Power lever movement is limited
  46. When would you get a GUST LOCK CWP light? 8-18
    When the Gust Lock is released and the rudder fails to unlock
  47. Are the aileron and elevator gust locks electric or mechanical? 8-18
  48. Is the Rudder gust lock electric or mechanical? 8-18
  49. How are the trim switches operated?
    Both switches must be moved together
Card Set
SF340 Flight Controls
Colgan Air Saab 340 Chapter 8 - Flight Controls