Complex sentence: The Glasair III is an all-composite cantilver low-wing monoplane is an improved variant of the earlier Glasair II with a retractable landing gear and powered by a Lycoming IO-540-K1H5 engine.
Split into simpler sentences: The Glasair III is an all-composite cantilver low-wing monoplane. It is an improved variant of the earlier Glasair II with a retractable landing gear and powered by a Lycoming IO-540-K1H5 engine.