B737-Flight Controls

  1. An attempt to bank the aircraft to the left results in no lateral movement of the wings. What is the problem and solution?
    Ailerons jammed: FO controls roll with spoilers
  2. Does the elevator feel system operate using A or B hydraulic system(s).
    Operates with either "A" or "B" system pressure available.
  3. What does an illuminated elevator FEEL DIFF PRESS light indicate?
    Excessive differenial pressure is sensed by the elevator feel computer with the flaps UP.
  4. Which system operates automatically above .615 mach and moves the elevator?
    Mach Trim System
  5. How is a mach trim system, single channel failure indicated?
    MACH TRIM FAIL light, FLT CONT annunciator, and MASTER CAUTION lights come on when recall is activated.
  6. TRUE or FALSE

    Main electric trim is faster with flaps extended.
  7. What is the function of the STAB TRIM CUTOUT switches? (300/500)
    Shuts off autopilot and main electric trim motors.
  8. What action is required to stop a runaway stabilizer trim?
    Move control column in the opposite direction of runaway trim to remove power from both autopilot and main electric trim motors.
  9. What are some conditions necessary for the automatic speed trim system to function?
    During low speed flight at a low gross weight, and with a aft CG it uses the autopilot stab trim to trim the aircraft.
  10. What indicates to the crew that the speed trim system is operating?
    Stabilizer trim wheel rotates at autopilot stab trim speed with the autopilot not engaged.
  11. How is dual channel speed trim failure indicated?
    SPEED TRIM FAIL, FLT CONT annunciator and MASTER CAUTION light illuminate.
  12. Which hydraulic system powers the rudder?
    Powered by either "A" or "B' or Standby hydraulic system
  13. What systems require power in order for the aileron and rudder trim systems to operate?
    Both Hydraulic and Electrical power are required for each system to trim the aircraft.
  14. What does the Rudder Pressure Reducer (RPR) do above 1000 ft. RA after takeoff?
    System "A" pressure to the rudder is reduced to 1000 psi.
  15. Which hydraulic system does the yaw damper system use and what does it do?
    Uses "B" hydraulic system pressure and provides rudder deflection commands and turn coordination.
  16. Which actions trip the YAW DAMPER switch to the OFF position?
    Loss of "A" hydraulic pressure. Flight control switch placed to OFF or STBY RUD.
  17. What is the hydraulic power source for the ground spoilers?
    "A" System for both inboard and outboard ground spoilers.
  18. Which action causes the flight spoilers to deploy at touchdown with the speed break lever ARMED?
    Wheel spin-up occurs on any two main wheels.
  19. What occurs after touchdown when all spoiler panels are deployed and either throttle is advanced?
    The SPEED BRAKE lever automatically moves to the down detent and all Ground and Flight spoilers retract.
  20. All spoiler panels extend when a takeoff is rejected above 60 kts. and ________.
    The reverse thrust levers are positioned to reverse thrust.
  21. What does an illuminated green SPEED BRAKE ARMED light indicate?
    Speed brake lever is selected to ARMED with valid system inputs.
  22. When approaching a stall angle of attack, what does the autoslat system provide?
    Automatic slat extension to the "full extend" position with trailing edge flaps at the 1 through 5 positions.
  23. When is the Power Transfer Unit (PTU) activated with flaps 1 through 5 selected?
    Loss of system "B" engine driven pump pressure.
  24. How does the Power Transfer Unit provide power for the autoslat system?
    Allows system "A" pressure to power a hydarulic pump which pressurizes system "B" fluid.
  25. What is the maximum altitude for flap extension?
    20,000 ft.
  26. TRUE or FALSE

    The alternate flap system provides asymmetry protection and LE devices can be retracted.
    FALSE. No asymmetry protection and LE devices cannot be retracted.
  27. When are the LE slats in the EXTEND position?
    When trailing edge flaps are in the 1 through 5 positions.
  28. With an amber LE TRANSIT light on (normal conditions), which other light(s) will illuminate on the forward panels?
  29. At cruise, what does an illuminated AUTO SLAT FAIL light, MASTER CAUTION light, and FLT CONT light indicate? (no recall)
    A dual channel autoslat computer failure.
  30. What occurs when the alternate flap position switch is held in the down position with the ALTERNATE FLAPS master switch in the ARM position?
    B? Standby hydraulic pump is energized, the electric motor extends trailing edge flaps and leading edge devices????
  31. Speedbrakes inflight________.
  32. What is the Mach limit with both channels of the Mach Trim system failed?
  33. TRUE or FALSE

    If the loss of hydraulic system "A" and the FEEL DIFF PRESS light illuminated, the elevator feel system is still operative.
  34. TRUE or FALSE

    With normal hydraulic system pressure indications, placing either FLT CONTROL switch to the STBY RUD position, should cause the respective flight control LOW PRESSURE light to illuminate, then extinguish.
  35. TRUE or FALSE

    The takeoff configuration warning horn will sound if a takeoff is attempted with speed brake lever in the SPEED BRAKE ARMED position.
  36. With the flaps set at "5" for takeoff, which leading edge annunciator will be illuminated on the center instrument panel?
  37. With the SPEED BRAKE DO NOT ARM light illuminated before landing, the speed brake lever should be manually moved to_____ after touchdown.
    UP (all the way back)
  38. The Yaw Damper uses:
    "B" system hydraulic pressure only.
  39. TRUE or FALSE

    When the leading edge devices are extended with ALTERNATE FLAPS Position Switch, the LE slats extend to FULL EXT regardless of TE flap position.
  40. TRUE or FALSE

    The MSCH TRIM FAIL light, in conjunction with the MASTER CAUTION and the System Annunciator FLT CONT light, illuminate if a dual channel failure of the Mach trim occurs.
  41. What function does the flap load limiter system provide? (300/500)
    It causes the flaps to move from 40 degrees to 30 degrees in the event of excessive airspeed.
  42. With the hydraulic "A" system flight control switch in STBY RUD:
    The Stanby hydraulic pump is activated.
  43. The trailing edge flaps are at 15 degrees. The correct indication on the aft overhead panel for the leading edge device is:
    Leading edge Devices (SLATS) FULL EXT lights are illuminated green.
  44. Duty cycle alternate flap extension to greater than 15 degrees and back to 0 degrees is:
    1 cycle-25 minutes off
  45. TRUE or FALSE

    Speed brakes should not be used with flaps greater than 15.
  46. The elevator FEEL DIFFERENTIAL PRESSURE light is inhibited when_______.
    The flaps are extended.
  47. A trailing edge flap asymmetry is sensed_______.
    In the trailing edge flap position indicator.
  48. The ground spoilers are powered by the "A" hydraulic system and can....
    only be pwered by the "A" hydraulic system
  49. The FLAP INHIBIT position of the GPWS switch...
    cancels an alert for landing with flaps less than 30 degrees.
  50. The trailing edge flaps are normally operated by_____.
    The "B" hydraulic system
Card Set
B737-Flight Controls
B737 flight controls systems