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Blackhawk Group earns STC for TBM engine upgrade

By General Aviation News Staff · October 14, 2025 · Leave a Comment

The Blackhawk Group’s testbed aircraft at EAA AirVenture Oshkosh 2025.

The Blackhawk Group has received FAA approval of its XP66D Engine+ Upgrade for the Daher TBM 700 series aircraft.

The first XP66D installation is being completed at Blackhawk’s headquarters in Waco, Texas. A second installation is already scheduled to begin at TBG’s AVEX Performance Center in Broomfield, Colorado, according to company officials.

The XP66D replaces the original 700-horsepower PT6A-64 engine with the more powerful 850-horsepower PT6A-66D, elevating TBM 700 performance with a 21% increase in shaft horsepower (SHP), company officials noted.

Flight testing has shown dramatic results: Climb to FL310 is reduced from 28 minutes to 22 minutes, while maximum cruise speed increases by an average of 25 KTAS, reaching up to 303 KTAS, according to company officials.

In addition to faster climbs and higher speeds, the XP66D upgrade reduces operating costs and increases safety margins through greater available power to altitude, company officials added.

For more information: BlackhawkGroup.aero

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