Blackhawk Nears FAA STC Approval for Daher TBM 700 Engine Upgrade | Aviation International News

EAA AirVenture 2025

Maintenance and Modifications

Blackhawk Nears STC Approval for TBM 700 Engine Upgrade

Modification specialist is anticipating imminent approval

The Blackhawk Group's TBM 700 testbed — The Blackhawk Group’s fully upgraded TBM 700C2 STC certification testbed is for sale and on display this week at the company’s booth at EAA Airventure.

By Curt Epstein • Business Aviation Services Editor

July 22, 2025

This week at EAA Airventure, aircraft modification specialist Blackhawk Group announced it has submitted a request to the FAA for a supplemental type certificate (STC) on its XP66D engine upgrade for Daher TBM 700-series turboprop singles. Replacing the original stock 700-shp Pratt & Whitney Canada PT6A-64 engine with the 850-shp PT6A-66D brings the TBM 700 performance on par with that of the upgraded TBM 850.

Blackhawk’s testing data reveals that the modification slashes time-to-climb to FL310 by six minutes and increases maximum cruise by an average of 25 knots to more than 300 knots. Additionally, the more powerful turboprop engine offers lower operating costs and enhanced safety margins with its increased power, according to Blackhawk.

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