Complex sentence: The ICAR 36 was a high-wing cantilever monoplane of mixed construction, with closed cockpit, single engine, and a fixed landing gear; a welded steel tube fuselage covered with plywood and tapered single-spar, plywood covered wings.
Split into simpler sentences: The ICAR 36 was a high-wing cantilever monoplane of mixed construction, with a closed cockpit, single engine, and fixed landing gear. It had a welded steel tube fuselage, covered with plywood, and tapered single-spar, plywood-covered wings.