Lycoming IO-540

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Lycoming IO-540 is a six-cylinder, horizontally opposed direct drive engine of 540 cubic inch displacement. "IO" stands for fuel injected and opposed cylinders, versions of this engine are equipped with carburators (referred to as "O-540") or turbochargers (known as "TIO-540"). Generally these engines produce 260 to 315 horsepower. They are installed on many Aero Commanders, Piper Navajos, Chieftans, Aztecs, Saratogas Comanches and Aerostars. Their main competitive engine is the Continental IO-520 and IO-550 series.

ETHANOL-FUELED IO-540 developed and certified by brazilian company

São José dos Campos, October 19, 2004 – Indústria Aeronáutica Neiva, a wholly owned Embraer subsidiary, has received type certification for its ethanol-fueled Ipanema cropdusting aircraft from Brazilian aviation regulating agency Centro Técnico Aeroespacial (CTA). The Ipanema is the first series production aircraft in the world coming out of the factory certified for flying with ethanol.

Conversion of existing engines is not only feasible but also cost effective. Neiva received 69 orders to retrofit customers’ AvGas-fueled Ipanemas into ethanol-powered airplanes. This work is expected to begin in January of the next year. Deliveries of the first units of the ethanol version are expected in the first quarter 2005.

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