Beechcraft King Air 350 Engine Upgrade STC on the Way
Turboprop engine-upgrade company Blackhawk Modifications this week announced progress toward a supplemental type certificate (STC) that will boost performance in the workhorse Beechcraft King Air 350. The Waco, Texas-based company recently submitted a flight test plan to the FAA for the engine upgrade that will replace the original Pratt & Whitney 1,050 shp PT6A-60A engines […]