In hot conditions, the company has seen climb rate more than double from sea level to the FL350 service ceiling, reducing this time-to-climb to 18 minutes.
Blackhawk Modifications has begun testing an engine upgrade for the Beechcraft King Air 350 that replaces the original 1,050-shp Pratt & Whitney Canada PT6A-60A engines with 1,200-shp (flat-rated to 1,050 shp) PT6A-67As. The installation on its King Air testbed also includes new, five-blade composite propellers from MT. (Photo: Blackhawk Modifications)
