The original TBM 850 is a more powerful, faster, derivative of the TBM 700 and supercedes the TBM 700C2. Although it retains the same Hartzell propeller as the TBM 700, the TBM 850 is fitted with a more powerful engine. The Pratt & Whitney Canada PT6A-66D turboprop is flat-rated to 850 shp, which is 150 shp more than the TBM 700’s PT6A-64 produced. The new engine also maintains more power at altitude and in hot conditions
The TBM 700 was designed to offer the owner–pilot fast, safe turboprop transportation. The aircraft was certificated in 1990 and is powered by a single Pratt & Whitney PT6A- 64 turboprop engine. The cabin seats four in club arrangement, with a fifth seat next to the pilot. The selling points of this aircraft are its speed and low cost. The range is also suitable for its cabin as no lavatory is available.