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481 - ATPL Question Bank in English - For a free-power-turbine turboprop engine:

Question 481 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot Licence

The pilot can select only OFF and IDLE; there is no control of flight power
The compressor, rather than the power turbine, directly drives the propeller reduction gearbox
The turbine driving the propeller reduction gearbox is mechanically independent of the gas generator
The gas-generator shaft and propeller shaft are rigidly coupled to rotate at the same speed

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