Aircraft
Blackhawk gets PT6A mod STC
Blackhawk Modifications (Booth No.

Blackhawk Modifications (Booth No. 2935) has received supplemental type certificate (STC) approval of its XP28 upgrade for the Piper Cheyenne I with Pratt & Whitney Canada PT6A-28 engines in place of the original PT6A-11s. The new engines will allow power to be carried to a much higher altitude and increase speed to 250 ktas.

The bolt-on $475,000 conversion uses freshly overhauled or time-continued P&WC PT6A-28 or variant -28 models that have been converted from PT6A-21 or PT6A-11 engines. New four-blade Hartzell or McCauley propellers are optional. A new flight manual supplement and performance charts are included. The XP28 upgrade is available from any of Blackhawk’s dealers.