X-Plane 9.70+ Bucker Bu 133 Jungmeister. The Bucker Bu133 Jungmeister was an advanced trainer of the Luftwaffe in the 1930s. It was a single-engine, single-seat biplane of wood and tubular steel construction and covered in fabric. This is an update of Mark Fisher's Bucker 133 Jungmeister, created originally for X-Plane 6. It has been converted to X-Plane 9 with his kind permission. The "Antares" version was created from information found on a Swiss TV documentary. By Etienne Hallauer.