Lycoming Engines has applied for approval to use UL 91 unleaded avgas in several of its engine models, including those in the 233, 235, 320 and 360 engine families. Engines in the 540 family will follow as Lycoming completes additional validation, Lycoming officials said. Lycoming has submitted for ASTM D7547 UL 91 unleaded avgas approval […]
Lycoming
Ask Paul: What’s best? A flush or overhaul?
Q: I recently found paper towel bits and pieces in a Lycoming engine in an aerobatic airplane. The pilot said he saw the oil pressure go to “zero,” so he reduced power, and landed safely. Would you suggest a flush or overhaul? What’s the best way to go about this? ED NELSON, via email A: […]
Ask Paul: Why is my spark plug oil-fouled?
Q: I have been noticing an intermittent miss on the left mag during mag checks on the O-235L2C in my 1981 Cessna 152 (about 670 SMOH that included new Lycoming cylinders and pistons). About 30 hours ago when I cleaned, regapped, and rotated the plugs, I found that the lower plug on the #4 cylinder […]
Lycoming STC for Cardinal RG
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, […]