Two months after the certification of the IO-390-A1A6 engine, Lycoming Engines has earned a Supplemental Type Certificate (STC) for installing the engine in a Cessna 177 Cardinal RG.
The Cessna 177 Cardinal RG’s original engine is a Lycoming IO-360. This is the first STC Lycoming has received as part of the Lycoming Echelon STC program, which seeks to provide premium powerplant and firewall forward solutions for legacy aircraft.
“The 390 offers pilots more power in the same footprint as the IO-360,” says Dennis Racine, Lycoming director of marketing and program management. “The benefits of the STC package include additional horsepower, improved performance in climb and cruise speed, and added value to the airframe.
Lycoming worked closely with Cessna Aircraft and McCauley Propellers to develop the Cardinal STC. Lycoming had developed and certified the IO-390 in response to requests from aircraft owners and pilots for a higher horsepower, four-cylinder engine. For several years, the uncertified version of a 390 Lycoming engine, the IO-390-X, has been powering many homebuilt and kit aircraft in the experimental market.
The certified IO-390 Lycoming engine weighs 312-315 pounds and has rated 210 hp at 2700 rpm. The four-cylinder, fuel-injected IO-390-A1A6 includes a rotating system, specifically developed cylinders, tuned induction system, Lycoming’s roller tappets, Slick Start ignition, and front facing fuel servo.
The STC includes a new or rebuilt IO-390, Slick Start System, McCauley governor and all required hardware. STC is approved with the McCauley 2-blade propeller that was standard equipment on the Cardinal RG, replacement is optional.
For more information: Lycoming.com.