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3743 Airport Drive • Denison TX 75020
Tel: 903-786-5050 • Fax: 903-786-5053


24/7 Tech Support Hot Line (903) 647-2114

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Our Company

Texas Turbine Conversions is the leader in aircraft power conversions

Located in North Dallas, at North Texas Regional Airport (KGYI), Texas Turbine Conversions, Inc. has been modifying aircraft with the Honeywell (Garrett) TPE331 engine for over 20 years. The company holds multiple STC's for engine modifications on numerous aircraft platforms.  Currently specializing in DeHavilland DHC-3 Otter and the Cessna 208/208B Caravan’s, the company has modified and delivered over 80 aircraft all over the world. Utilizing the Honeywell TPE331-12JR, we have sold over 45 Cessna 208/208B Caravans, and have converted over 40 Otters since 2001 using either the Honeywell TPE331-10 or the TPE331-12 engine.

The company is comprised of people with engineering, mechanical, and flying backgrounds. We are very familiar with the following aircraft:

  • Cessna C-172's up to C-208
  • Helio Couriers
  • Pilatus PC-6 Porters
  • DeHavilland DHC-3 Otters, DHC-4 Caribous, DHC-6 Twin Otters
  • Shorts SC-7 Skyvans
  • Douglas DC-3's

TTC, Inc. is easily capable of fulfilling your engine upgrade needs. We have several other conversions planned in the future and your aircraft could be one of them. Just give us a call and we can talk about the engine needs for your particular aircraft.