4 blade, shaft horsepower add, shorter take off distance, increased climb rate. Yup believe it! Look here.
Locator: 3 miles north of the City of Yorkton - 51.2587 N, 102.4629 W - S1/2 Sec 23-26-4-W2
We know not all of our customers use large airports, so we've included the radio protocol reference sheet and the Yorkton Aerodrome chart.