Related Topics
Take Another Quiz

B737 - Day 5 - Pneumatics, Air Conditioning

21 Questions
Climate Quizzes & Trivia

B737 Typerating

Questions and Answers
  • 1. 
    What are the sources of engine bleed air?
    • A. 

      4th compressor section

    • B. 

      5th and 9th stage of compressor section.

    • C. 

      5th compressor section

    • D. 

      9th compressor section

  • 2. 
    With both engine bleed switches ON, pack switches selected to AUTO, and the isolation valve switch in AUTO, what position will the isolation valve be in?
    • A. 

      Closed

    • B. 

      On

  • 3. 
    With the isolation valve switch in the AUTO position, what selection either pack switch will open the isolation valve?
    • A. 

      OFF

    • B. 

      Auto

    • C. 

      ON

  • 4. 
    Which valve controls the associated pneumatic system pressure?
    • A. 

      The engine bleed valve

    • B. 

      APU bleed valve

    • C. 

      Mix Manifold

    • D. 

      X-bleed valve

  • 5. 
    When will the DUAL BLEED light illuminate?
    • A. 

      If both engine bleeds are on

    • B. 

      N°2 engine bleed ON and APU bleed ON.

    • C. 

      N°1 engine bleed ON and APU bleed ON.

    • D. 

      N°1 engine bleed ON and APU bleed OFF.

  • 6. 
    When will Engine BLEED TRIP OFF light illuminate?
    • A. 

      When the engine bleed temperature exceeds a pre-determined limit

    • B. 

      When EGT exceeds a pre-determined limit

    • C. 

      When the engine bleed pressure exceeds a pre-determined limit

    • D. 

      When the engine bleed Temperature or pressure exceeds a pre-determined limit

  • 7. 
    The TRIP RESET on the 737 800 will reset 3 situations which are?
    • A. 

      BLEED TRIP OFF, PACK TRIP OFF and ZONE TEMP lights

    • B. 

      Exessive EGT, pressure and temperature

    • C. 

      BLEED TRIP OFF, DUAL BLEED and ZONE TEMP lights

    • D. 

      Exessive temp on both engines and APU

  • 8. 
    A leak of hot air from the APU bleed duct will cause the illumination of which light?
    • A. 

      Left WING BODY OVERHEAT

    • B. 

      Right WING BODY OVERHEAT

    • C. 

      OVERHEAT light

    • D. 

      FAULT light

  • 9. 
    Before Engine Start, what Bleed Duct Pressure should be indicated?
    • A. 

      It is an on demand supply, however it does read approx. 15 psi

    • B. 

      It is an on demand supply, however it does read approx 30 psi

    • C. 

      It is an on demand supply, however it does read approx 25 psi

    • D. 

      It is an on demand supply, however it does read approx 45 psi

  • 10. 
    Illumination of the right WING-BODY OVERHEAT light indicates that an overheat has occurred in which duct?
    • A. 

      Left engine strut, Left inboard wing leading edge, or Left side air conditioning bay.

    • B. 

      Left wing tank

    • C. 

      Right engine strut, right inboard wing leading edge, or right side air conditioning bay.

    • D. 

      Right wing tank

  • 11. 
    Automatic switching to the APU high flow mode occurs when the APU bleed switch is ON, either pack switch is set to ---------, and the aircraft is positioned ------------?
    • A. 

      LOW, on the ground

    • B. 

      HIGH, in flight

    • C. 

      HIGH, on the ground

    • D. 

      Low, in flight

  • 12. 
    When are the RAM DOOR FULL OPEN lights illuminated?
    • A. 

      On the ground or in flight

    • B. 

      On the ground or in flight with the flaps extended

    • C. 

      In flight with flaps extended

    • D. 

      In flight with gear down

  • 13. 
    What will be the position of the trip air modulating valve after the associated ZONE TEMP light is illuminated?
    • A. 

      Closed

    • B. 

      Open

  • 14. 
    In flight, with flaps retracted, both pack switches in AUTO, but only one pack operating, what flow mode will be in?
    • A. 

      OFF mode

    • B. 

      It will schedule to ON flow mode

    • C. 

      It will schedule to AUTO mode

    • D. 

      It will schedule to high flow mode

  • 15. 
    What causes a PACK light to illuminate?
    • A. 

      Failure of both primary and standby pack controls, or the overheat in the cooling cycle. The associated pack valve closes.

    • B. 

      Both packs in operation

    • C. 

      A fault in with either on or both packs

    • D. 

      Failure of both primary and standby pack controls.

  • 16. 
    On the ground, with the APU bleed switch ON, if either pack switch is set to HIGH, the APU will which mode?
    • A. 

      High flow

    • B. 

      Normal flow

    • C. 

      Auto flow

    • D. 

      OFF

  • 17. 
    Conditioned air from the Left Pack is supplied to?
    • A. 

      The Mix Manifold

    • B. 

      The mix Manifold and the Cabin

    • C. 

      The Mix Manifold and the Flight Deck

    • D. 

      The Cabin

  • 18. 
    In flight, with the recirculation fans in the AUTO position (##):
    • A. 

      The right recirculation fan operates if both packs are operating unless both PACK switches are selected to HIGH

    • B. 

      Both fans are operating normally.

    • C. 

      Both fans are operating in HIGH mode

    • D. 

      The left recirculation fan operates if both packs are operating unless both PACK switches are selected to HIGH

  • 19. 
    In the AUTO mode of operation, when does the pressurization start (##)?
    • A. 

      When AUTO button is pressed.

    • B. 

      When TOGA buttons are pressed

    • C. 

      When aircraft gets airborne

    • D. 

      On the ground when the thrusts levers are advanced to set take-off power (when both N1s are greater than 60% & both N2s are greater than 89% for 1.5 seconds)

  • 20. 
    With the pressurization mode selector in AUTO, what indicates a failure of the selected controller?
    • A. 

      FAULT light illuminates.

    • B. 

      MASTER CAUTION and FAULT lights illuminate.

    • C. 

      MASTER CAUTION and ALTN lights illuminate.

    • D. 

      The AUTO FAIL and ALTN lights illuminate.

  • 21. 
    Below 28 000ft and if AUTO mode, the pressurization system controller schedules a constant When does the OFF SCHED DESCENT light illuminate?cabin altitude during the cruise, based on what differential pressure?
    • A. 

      7.8 psi

    • B. 

      7.45 psi

    • C. 

      8.35 psi