XtremeAir 42, also known as Sbach 342 – its marketing name, is a German high performance two-seat aerobatic and touring monoplane, designed by Philipp Steinbach with Albert Mylius and built by XtremeAir GmbH of Hecklingen. XA42 is a composite structure low-wing monoplane with a fixed conventional landing gear with a tailwheel. It is powered by a 315 hp (235 kW) Lycoming AEIO-580-B1A piston engine driving a three-bladed propeller.
It is the tandem version of the single-seater XA 41 (XtremeAir Sbach 300) which was designed by the same team in Speyer in 2004.
The XA42 received a type certificate from the European Aviation Safety Agency in March 2011. In November 2012 it received its type certification through the FAA.
- Crew: 1
- Capacity: 2
- Length: 6.67 m (21 ft 11 in)
- Wingspan: 7.5 m (24 ft 7 in)
- Height: 2.54 m (8 ft 4 in)
- Wing area: 11.25 m2 (121 ft2)
- Empty weight: 670 kg (1477 lb)
- Gross weight: 850 kg (1874 lb)
- Powerplant: 1 × Lycoming AEIO-580-B1A horizontally-opposed six-cylinder piston engine, 245 kW (315 hp)
- Fuel tank capacity: 275 l. (57 l. aerobatic)
- Maximum speed: 416 km/h (256 mph)
- Service ceiling: 4572 m (15000 ft)
- G limits: +/- 10
- Roll rate: 450°/sec