Raisbeck Engineering Beechcraft King Air 200 series ‐ upgrade to 4‐blade "Quiet Turbofans" Beechcraft King Air 90 series ‐ upgrade to 4‐blade "Quiet Turbofans" DeHavilland Twin Otter ‐ upgrade to 4‐blade "Quiet Turbofans" Colemill Enterprises Piper Navajo / Chieftan ‐ "Panther" upgrade includes 4‐blade Q‐tip propellers Beechcraft Baron ‐ "President" upgrade includes new 3‐blade propellers Beechcraft Baron ‐ "Foxstar" upgrade includes 4‐blade Q‐tip propellers Beechcraft Bonanza ‐ "Starfire" upgrade includes 4‐blade Q‐tip propeller D'Shannon Aviation Beechcraft Bonanaza ‐ upgrade to 3‐blade propeller RAM Aircraft Cessna 421B/C ‐ upgrade to new 3‐blade propeller Cessna 340 / 414 ‐ "Series IV, VI, VII" upgrades include 3‐blade ScimitarPlus propellers Cessna T310, 340, 414 ‐ upgrade to 3‐blade Q‐tip propellers Cessna T206, T207, T210 ‐ upgrade to 3‐blade ScimitarPlus SE propeller Beechcraft 58P, 58TC Baron ‐ upgrade to new 3‐blade propellers Rocket Engineering Piper Malibu / Mirage ‐ "JetPROP" turbine engine conversion including 4‐blade propeller Beechcraft Duke ‐ "Royal Turbine" engine conversion including 4‐blade propellers Beechcraft B36TC Bonanza ‐ "Turbine Air" engine conversion including 4‐blade propeller O&N Aircraft ‐ Cessna P210 ‐ turbine engine conversion including 3‐blade propeller Serv Aero ‐ DeHavilland Otter ‐ turbine engine conversion including 3‐blade propeller Tradewind Turbines ‐ Beechcraft Bonanza ‐ turbine engine conversion including 3‐blade propeller Turbines, Inc ‐ Thrush S2R ‐ turbine conversion includes 3‐blade propeller Soloy Aviation ‐ Cessna 206H ‐ turbine conversion includes new 3‐blade propeller Southern Agro Turbine ‐ turbine conversion includes 3‐blade propeller Basler Turbo Conversions ‐ Douglas DC‐3 ‐ "BT‐67" turbine conversion includes new 5‐blade propellers Yates Aircraft ‐ Cessna 188 ‐ upgrade includes new 2‐blade propeller Hershey Flying Service ‐ Thrush S2R ‐ turbine conversion includes 3‐blade propeller Texas Skyways ‐ Cessna single engine conversions including new 3‐blade propeller Turbine Dromader ‐ PZL M18 Dromader ‐ turbine conversion including 3‐blade propeller Aerodyme ‐ Commander 114 ‐ engine conversion including new 3‐blade propeller Wipaire ‐ Cessna single engine float conversions including new 3‐blade propellers Malibu Power ‐ Piper Malibu engine conversion including new 3‐blade propeller Texas Turbine Conversions DHavilland Otter ‐ turbine engine conversion including 4‐blade propeller Cessna Caravan ‐ engine upgrade including 4‐blade propeller P. Ponk ‐ Cessna single engine conversions including new 3‐blade propellers Tornado Alley Turbos ‐ Beech Bonanza engine upgrade including new 3‐blade propeller Atlantic Aero Beech Bonanza engine upgrade including new 3‐bladepropeller Cessna 210 engine upgrade including new 3‐blade propeller Aero Twin / 850 LLC ‐ Cessna Caravan ‐ engine upgrade including 4‐blade propeller Blackhawk Modifications Piper Cheyenne ‐ engine upgrade including 4‐blade propellers Cessna Caravan ‐ engine upgrade including 4‐blade propeller Standard Aero ‐ Beechcraft King Air 200 ‐ engine upgrade including 4‐blade propellers Knot 2U ‐ Piper Twin Comanche ‐ upgrade to new 2‐blade propellers Professional Pilots Piper Super Cut ‐ engine upgrade including 2‐blade propeller Piper Cherokee Six 300 / Saratoga ‐ upgrade to new 3‐blade propeller Piper Arrow ‐ upgrade to new 2‐blade propeller Midwest M20 Sales ‐ Mooney Eagle ‐ engine upgrade including 3‐blade propeller .