Original sentence: 506A set a number of altitude, speed and distance records for its class between 1936 and 1938.A military version was developed as the Z.The Z
Edited sentence: 506A set a number of altitude, speed and distance records for its class between 1936 and 1938, including speeds of 191.539 mph (308.25km/h) over distance of 3,107 (5000 km), 198.7 mph (319.78 km/h) over a distance of 1,243 miles (2000 km), and 200.118 mph (322.06) over a distance of 621 miles (1000 km).A military version  was developed as the Z.Flown mostly by Mario Stoppani, the Z.It carried a load of 4,409 lb (2000 kg) to 25,623 ft (7810) and 11,023 lb (5000 kg) to 22,693 ft (6917 m).Later flew 3,345.225 miles (5383.6 km) in a closed circuit