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.
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.
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.
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
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).
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.
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.
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
9
Q
The maximum permissible ITT during an engine start is:
- 600°c
- 1,500°c
- 400°c
- 950°c
A
- 950°c
10
Q
The recommended Nh rpm range before selecting fuel on is:
- 10% - 19%
- Maximum Nh attainable
- 10% - 25%
- 5% - 19%
A
- 10% - 19%
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.