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Business Aviation’s Workhorse Engine Marks Its 50th Birthday

Honeywell’s TFE731 turbofan helped define the business jet category in the early 1970s.

A Dassault Falcon 900.
A Dassault Falcon 900. [Shutterstock]
Gemini Sparkle

Key Takeaways:

  • Honeywell's TFE731 turbofan engine is a long-standing "workhorse" in aviation, celebrating 50 years since its certification in 1972.
  • Uniquely designed for business aviation, it significantly boosted fuel economy and range while cutting noise pollution, addressing major hurdles for early business jets.
  • The engine quickly became a staple, powering definitive new aircraft like the Lear 35, Dassault Falcon 50, and Cessna Citation III, earning "Aviation Product of the Year" in 1975.
  • With 13,000 units produced and 9,400 still in service, logging 108 million flight hours, the TFE731 remains a critical engine in the midsize jet segment and continues to evolve.
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Coming up with the right analogy to describe Honeywell’s (NASDAQ: HON) TFE731 engine can turn into a parlor game. You could say the widely used turbofan is the Lycoming O-320 of the jet world, or perhaps it is more akin to the -540 series.

If a vintage-car buff entered the conversation, the TFE731 would certainly be the Chevrolet small-block V-8 of aviation.

Jonathan Welsh

Jonathan Welsh is Lead Editor of Aviation Consumer and a private pilot who worked as a reporter, editor and columnist with the Wall Street Journal for 21 years, mostly covering the auto industry. His passion for aviation began in childhood with balsa-wood gliders his aunt would buy for him at the corner store. Follow Jonathan on Twitter @JonathanWelsh4

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