Complex sentence: In 2002 he established a world record in speed over a triangular course of 1000km (144.95km/h) in the 15m class in a SZD 56 Diana from Ely, Nevada (USA).
Split into simpler sentences: In 2002 he established a world record in speed over a triangular course of 1000km (144.95km/h) in the 15m class. He performed this flight in a SZD 56 Diana from Ely, Nevada (USA).