Blackhawk Modifications of Waco, Texas, could begin testing its King Air 350 XP67A engine upgrade program next month. A testing plan has been submitted to the FAA. Blackhawk anticipates testing to begin in November, with the finalized supplemental type certificate expected in May of 2017.
The STC will allow the Pratt and Whitney Canada PT6A-67A 1,200-shaft-horsepower engine to replace the standard PT6A-60A 1,050-shp engines in the King Air 350. Because the higher horsepower engine will require a more robust propeller assembly, Blackhawk has worked with MT Propeller to develop a migration path. MT will exchange the hubs and spinners on King Air 350s with the five-blade composite propellers currently installed "for a small fee" and will reset the propeller warranty to two years.
The company is now accepting pre-certification orders for the XP67A with a $50,000 refundable deposit. The company said that it has contracted with Pratt and Whitney to offer the XP67A under the Converter Exchange Program (CEP) and requires the core PT6A-60A engines to be returned. Qualifying core engines will be issued credit at $70 per hour per engine for time remaining to the 3,600 TBO.
During the National Business Aviation Association's Business Aviation Convention and Exhibition in Orlando, Florida, the company will have a display at the Orange County Convention Center off the main aisle in South Exhibit Hall A, booth #1119.