Powerplant Flashcards

1
Q

The PW 123D series engines comprise, in part:

  • 1 axial compressor and one centrifugal compressor.
  • 12 cylinders in a V formation.
  • 2 centrifugal compressors and a two stage propeller compressor.
  • 2 centrifugal compressors, two compressor turbines and a two stage power turbine.
A
  • 2 centrifugal compressors, two compressor turbines and a two stage power turbine.
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2
Q

The ECU:

  • Provides Np underspeed protection; preventing Np entering the 500 - 780
    prop RPM range.
  • Should be selected OFF for normal operations.
  • Provides Np overspeed protection; preventing Np entering the restricted
    range, 1200 - 1236 prop RPM.
  • Provides automatic torque setting on take off.
A
  • Provides Np underspeed protection; preventing Np entering the 500 - 780
    prop RPM range.
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3
Q

Failure of the No. 1 ECU on takeoff prior to setting climb power will be indicated by:

  • A significant loss of power on the No 1 engine.
  • The “#1 ENG Manual” caution light and no power loss.
  • The “#1 ENG Manual” caution light and a significant power loss.
  • The “#1 Torque motor” caution light and no power loss.
A
  • The “#1 ENG Manual” caution light and no power loss.
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4
Q

If an engine fails to light-off within ten seconds of initiating fuel flow:

  • The condition lever should be moved to max.
  • The start must be aborted
  • The start may be continued.
  • A hot start will ensue.
A
  • The start must be aborted
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5
Q

The starter engagement limits are:

  • Two minutes on, two minutes off (three attempts)
  • One minute on, one minute off (three attempts).
  • Two minutes on, one minute off (three attempts).
  • One minute on, two minutes off (three attempts).
A
  • One minute on, two minutes off (three attempts).
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6
Q

The ENGINE INTAKE HTR requires the following conditions to operate:

  • Flight in icing conditions with OAT above 15° C.
  • OAT above 15°C.
  • Flight in icing conditions.
  • Engine running, variable AC available, Bypass doors open, OAT 15°C or less.
A
  • Engine running, variable AC available, Bypass doors open, OAT 15°C or less.
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7
Q

The power levers, in part:

  • Cause the propellers to feather when selected to ‘ discing’.
  • Control the propeller blade angle in the ‘beta’ range.
  • Must be moved from ‘discing’ to ‘flight idle’ to initiate fuel flow for engine
    starting.
  • Are a convenient hand rest for the pilot flying.
A
  • Control the propeller blade angle in the ‘beta’ range.
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8
Q

The engine must be shut down if the oil pressure drops below:

  • 40 psi
  • 30 psi
  • 55 psi
  • 20 psi
A
  • 40 psi
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9
Q

The maximum permissible ITT during an engine start is:

  • 600°c
  • 1,500°c
  • 400°c
  • 950°c
A
  • 950°c
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10
Q

The recommended Nh rpm range before selecting fuel on is:

  • 10% - 19%
  • Maximum Nh attainable
  • 10% - 25%
  • 5% - 19%
A
  • 10% - 19%
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11
Q

The engine oil quantity should be:

  • Maintained at the full level at all times.
  • Checked by a licensed engineer only.
  • Checked prior to the first flight of the day.
  • Checked within 30 minutes of engine shutdown.
A
  • Checked within 30 minutes of engine shutdown.
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