AD 2/3

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AD 2/3
2011-02-19 01:16:32
Assignment ten

Turboprop Engines and Props and Power Plant Troubleshooting
Show Answers:

  1. If fluid other than the correct hydraulic fluid is used to service the prop or prop control, the entire assembly must be sent to overhaul for seal replacement.
  2. What will happen if the prop system is tested without being properly serviced?
    The auxiliary pump motor will continue to run
  3. Which of the following conditions require a rigging check?

    Prop servicing or engine change?
    Fuel control or coordinator change?
    Linkage change or adjustment on fuel control?
    both 2 and 3 above
  4. What minimum number of rigging pins are required to rig and adjust a prop system?
  5. By which of the following means does pulling the emergency shudown handle send the prop to full feather?
    by mechanically positioning the feather valve and electrically energizing the feather button
  6. If your hand slips off the feather button while decreasing blade angle during an unfeather check, you must increase blade angle by refeathering the prop before continuing to decrease blade angle.
  7. What must be done to the prop dome assembly to avoid an erroneous final balance check?
    drain any residual hydraulic fluid from the dome
  8. When the prop is being balanced, the blade pitch must be set to what degree?
    45 degrees
  9. What is the purpose of the red nuts, bolts, and washers installed in the deicer contact ring holder assembly?
    to obtain holder assembly balance
  10. During preliminary balancing, you should install balance washers on what prop component?
    on the blade balance plug
  11. During the external leakage test, a total of how many cycles must be completed with no evidence of leakage?
  12. 90 degrees coordinator movement is what power lever position?
  13. 0 degrees coordinator movement is what power lever position?
    max reverse
  14. 34 degrees coordinator movement is what power lever position?
    flight idle
  15. The power levers control what power?
    power delivered by the engines
  16. The function of the coordinator is to coordinate the interaction between which of the following groups of components?
    fuel control, temperature control, and propeller
  17. Effective troubleshooting includes all EXCEPT which of the following requirements?

    A thorough knowledge of normal engine operations?
    An understanding of atmospheric effects on engine operation?
    Using schematic to visualize component relationships?
    Restoring normal operating limitations through quick adjustments?
    Restoring normal operating limitations through quick adjustments
  18. Which of the following problems is most often the cause of recurring engine discrepancies?
    improper troubleshooting procedures
  19. The responsiblity to discover and eliminate unsafe work practices rests with which of the following individuals?
    all hands
  20. Which of the following is the most frequent problem associated with the compressor section?

    foreign object damage?
  21. Which of the following operations will cause problems in the combustion chamber and turbine section?

    Hot starts?
    All of the above
  22. The engine fuel system starts with which of the following components?
    engine driven fuel pump
  23. Using F-44 fuel in jet aircraft engines could result in problems since this is the wrong type of fuel.
  24. When troubleshooting aircraft systems or components, you should check past records for which of the following reasons?

    to determine how the systems or components operate?
    To see if previous or interreleated maintenance was performed on the same systems or components?
    To determine the location of the components in the system?
    To determine what test equipment should be used?
    To see if previous or interrelated maintenance was performed on the same systems or components
  25. An operational check may include which of the following operations?

    Checking mechanical linkages for binding?
    Performing an engine turnup to record engine speeds and temperatures?
    Using a JETCAL analyzer or JETCAL unit?
    All of the above
  26. You are troubleshooting an electrical device that is not receiving any power. What check should you make first?
    check the fuse or circuit breaker
  27. Before replacing a major component in an aircraft, you should make which of the following determinations?
    Whether the component to be replaced is defective
  28. What is the first step in the deductive troubleshooting of a functional engine discrepancy?
    a visual inspection
  29. Early model engine test procedures used rpm as the sole engine operating parameter to establish thrust. Many present day test procedures use which of the following engine parameters?
    engine pressure ratio
  30. What is engine pressure ratio (EPR)?
    Ratio of total pressure at the front of the compressor to total pressure at rear of the turbine
  31. As compared to a cold day, what happens to compressor rpm for a given thrust on a hot day?
    it will be lower
  32. Common troubleshooting errors include which of the following errors?

    Omitting required checks because they took too much time?
    Trying to remember pressures taken during checks instead of writing down information for later reference?
    Performing extra troubleshooting checks after a system or component checked good?
    all of the above
  33. Which diagram shows components by using symbols?
    schematic diagram
  34. Which diagram shows the sequence in which components are assembled?
    exploded view drawing
  35. Which diagram shows the relationship of each part with other parts in the system?
    schematic diagram
  36. In what TRAMAN can you find additional information to learn more about reading and drawing diagrams?
    NAVEDTRA 10077
  37. Which of the following information can NOT be determined from fluid line identification markers?
    secondary hazard
  38. Yellow is the color code used on the identification tape attached to an aircraft line that carries what material?
    lubricating oil
  39. What color is used on the tapes that identify aircraft fire-protectiong lines?
  40. What is the method most often used for identifying fluid lines?
    1-inch tape
  41. What do two-headed arrows show on fluid identification?
    reversible flow
  42. What hazard does the FLAM code identify?
  43. What hazard does the AAHM code identify?
    Anesthestic and harmful materials
  44. What hazard does the PHDAN code identify?
    physically dangerous
  45. Additional code for types of fluid lines and the color codes and symbols for each line are listed in which of the following pubs?

    NAVAIR 01-1A-20?
    NAVAIR 04-75PAC-1C?
    both 1 and 2 above
  46. To use electrical test equipment correctly, you must thoroughly understand the system and have a working knowledge of which of the following subjects?

    Basic electricity?
    Intermediate mathematics?
    Advanced logic?
    Flow charting?
    basic electricity
  47. When using an ohmmeter, the power switch of the circuit to be measured should always be in the ON position.
  48. What meter is the best meter to use when you troubleshoot an open circuit?
  49. Which of the following types of meters are contained in the multimeter?
    Ammeter, ohmmeter, and voltmeter
  50. An ohmmeter is used to measure circuit continuity and what other circuit parameter(s)?
    partial or total circuit resistance
  51. The variable resistor of an ohmmeter is properly adjusted with the heads shorted. The pointer will indicate what reading?
    zero only
  52. An ohmmeter is being used properly on a series-parallel circuit. What would an infinity reading indicate?
    open circuit
  53. A high-voltage insulation tester detects or measures which of the following electric properties?

    stray voltage?
    high harness resistance?
    electrical leakage?
    effects of static electricity?
    electrical leakage
  54. To calibrate the high-tension voltage tester, the microampere and kilovolt meters should be set to what value when the machine is OFF?
  55. The excess current indicator of the high-tension voltage tester should start to flash on and off continually when the microampere meter shows an excess of what maximum current flow?
    100 micro-amps
  56. When you operate the high-tension voltage tester, the red high-voltage test lead is connected to what side of the part to be tested?
    the high-voltage side
  57. When you operate the insulation tester, which of the following safety procedures should you follow?
    always discharge the ground circuits before you touch them
  58. Low EGT can reduce turbine blade life by up to 50 percent.
  59. An aircraft aborts a flight because of low thrust at max rpm. Which of the following sources of info will give you the most accurate readings to troubleshoot the problem?

    aircraft cockpit gauges?
    jet calibration/test unit?
    pilot passdown?
    JETCAL unit
  60. Which, if any, of the following inspection methods would allow you to check for damaged turbine vanes without engine disassembly?

    dye penetrant inspection?
    fiber-optic borescope?
    engine analyzer?
    fiber-optic borescope
  61. What are the two types of borescopes?
    rigid and flexible probe
  62. What is the primary advantage of the fiber-optic borescope?
    many areas of the engine may be inspected without opening the engine
  63. The optical characteristics of small and large borescopes are the same; the difference between them is length only.