12/31/2012. Remarks by Walter van Tilborg: "XtremeAir GmbH was founded by Harro Moewes in December 2005, and a year later it moved into a newly built production facility at Magdeburg-Cochstedt airport, Hecklingen, Germany. The Sbach is an original design single-seat unlimited aerobatic aircraft, designed by Philipp Steinbach and Albert Mylius. The construction is entirely of composite materials (carbon fiber) and stressed to +/- 10G.

The prototype (D-EYKS c/n 01) was initially known as the Extreme 3000 and was powered by a 300 hp Lycoming Thunderbolt AEIO-580-L1B5 engine. It made its maiden flight on May 19, 2006, and was soon very successful in several aerobatic contests and won the 2006 German aerobatic championship in the unlimited class.

Soon the name was changed to Sbach 300, while later the designation XA41 was used for marketing and certification purposes. The type could also accept engines such as the 320 hp or 330 hp AEIO-580, or the 300 hp AEIO-540. During 2012 the type became the world's first certificated (also by FAA) composite construction aerobatic aircraft. By late 2012 at least seven aircraft had been completed.

The Sbach 342 is a very similar two-seat version with a prototype aircraft first flying in July 2008. It was slightly longer and also featured a longer cockpit canopy. Engine was also the 300 hp AEIO-580-L1B5 (with the same optional engines as in the Sbach 300) and overall performance was very similar to the single-seat version. The Sbach 342 was designated as XA42 for marketing and certification purposes.

The Reinsdorf 325 is a modified aircraft built from a Sbach 342 kit by a group at Reinsdorf airfield, including Matthias Jahn, Pedro Schäffer, Holger Keil, Kathi Suthau. Fitted with a 350 hp Lycoming AEIO-580 engine, it first flew as D-EZAK on September 17, 2011 after construction had started in May 2010."