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Company-funded single-seat ground-attack development of MB-339 two-seat trainer. No prototype, built on MB-339 production jigs, first flight May 30, 1980. Powered by a more powerful engine, it had a revised nose, an internal cannon and larger fuel capacity. Engine: 4,450 lb (2,018 kg) s.t Fiat-built Rolls-Royce Viper 680 Max. speed: 559 mph (900 kmh) at sea level Ceiling: 47,999 ft (14,630 m) Range: 805 mls (1,296 km) Weight: 7,154 lb (3,245 kg) Max. T/O: 13,999 lb (6,350 kg) Span: 36 ft 9.7 in (11.22 m) Length: 35 ft 7.2 in (10.85 m) Height: 13 ft 1.1 in (3.99 m) Area: 207.74 sq.ft (19.30 sq.m)