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Identyfication by Armand van Ishoven. This was the first light aircraft in the world, designed by Daimlers chief constructor Hanns Klemm. Built in secret after World War One the single-seater was powered by a 7.5 hp Indian motorcycle engine and suffered structural faillure during taxiing trials early in 1919. It was rebuild and first tested as a glider and then the Indian engine was fitted again in 1922. In December 1923 it was flown as a two-seater fitted with a 12.5 hp Harley-Davidson engine. Solo flights have been made with a duration of three hours and reaching 7,000 ft (2,134 m). Early 1924 Dipl.-Ing. M. Schrenk and Dipl.-Ing. W. von Langsdorff made a record flight from Sindelfingen to Bensheim, Germany, a distance of 75 mile (120 km) in two hours, reaching 3,609 ft (1,100 m). The aircraft is also known as Klemm-Daimler L 15. Specifications (single-seater): Span: 52 ft 9.9 in (16.1 m) Length: 27 ft 6.7 in (8.4 m) Height: 6 ft 10.7 in (2.1 m) Wing area: 258.33 sq.ft (24.0 sq.m) Empty wt: 417 lb (189 kg) Max T/O wt: 608 lb (189 kg) Max speed: 46.6 mph (75 kmh) Ceiling: 7,218 ft (2,200 m)