Phil Lockwood Explains Component Changes in Engine TBO Increase
At the 2010 Sport Aviation Expo, Rotax premiered their new 2010 model of the 912 ULS engine. Popular among the LSA industry, the 4 stroke 9 series Rotax engine premiered in 1989. When it debuted, the engine featured a 600-hour time between overhaul (TBO). Over time, with much refinement and evolution, Rotax gradually raised TBO times from 600 hours to 1200 hours to 1500 hours. Now, twenty years after its debut, the 912ULS engines have had their recommended TOB raised to 2,000 hours.