Chapter 1 Dash 1 (Systems) Flashcards
What is the aircraft basic empty weight?
4900 pounds
What is maximum takeoff gross weight?
6500 pounds
How much shaft horsepower does the PT6A-68 Engine Produce?
1100 Shaft Horsepower
What are the two sections of the PT6A-68 Engine?
Gas Generator Section and Power Turbine Section
What are the 4 parts of the gas generator section?
Four-stage axial-flow compressor, single-stage centrifugal flow compressor, combustion chamber, and single stage compressor turbine
What is the oil capacity of the Oil System?
18.5 Quarts
What are the 4 components of the oil system?
Pressure, scavenge, cooling, breather
When must oil be serviced if it requires servicing?
Within 30 minutes of engine shutdown
Where is normal oil level on the dipstick?
Between ADD and MAX HOT
Can you use the sight glass for accurately checking oil quantity?
No
The engine oil pressure indicator may display oil pressures up to ____ PSI with the engine shutdown due to the design of the oil pressure transmitter.
4 PSI
Where is data from the oil pressure and temperature sensors sent?
To the Engine Data Manager (EDM)
Where does the EDM send information about the oil pressure to illuminate the CWS panel if necessary?
To the signal conditioning unit (SCU)
When will the SCU activate the Red OIL PX annunciator?
-If oil pressure is at or below 40 PSI with the PCL above idle
-If oil pressure is at or below 15 PSI at idle
-If oil pressure is between 15 and 40 PSI for 5 seconds at idle
When will the SCU activate the Amber OIL PX annunciator?
-If oil pressure is between 15 and 40 PSI at idle power
-If oil pressure is between 40 and 90 PSI for 10 seconds above idle power
When will the SCU activate both the Amber and Red OIL PX annunciators?
If oil pressure remains between 15 and 40 PSI at idle power for 5 or more seconds
What does illumination of both Red and Amber OIL PX annunciators mean if the Oil Pressure gauge is otherwise reading normal oil pressure?
Failure of the Signal Conditioning Unit (SCU)
What circuit breaker does power for the Oil Pressure transducer flow through and where is it located?
OIL TRX on FCP Bat Bus
If power fails to the oil pressure transducer, what will the oil pressure gauge read?
0 PSI
The Reduction Gearbox is a two-stage planetary reduction drive that reduces power turbine output shaft speed of _______ RPM to the propeller operating speed of _________ RPM
30,000 RPM, 2,000 RPM
Is there a mechanical connection between the Reduction Gearbox and the Gas Generation Section?
No
Where is the Chip Detector mounted?
In the Reduction Gearbox
What are the 3 devices mounted on top of the Reduction Gearbox?
Propeller Interface Unit, torque probe, Permanent Magnet Alternator (PMA)
What is mounted on the right side of the Reduction Gearbox?
The Air Conditioning Compressor