First flown in 1948, the Mi-1 was the first Soviet helicopter to enter large-scale production, being used for both military and civil duties. Largely replaced now by the Mi-2, it remains in use with some smaller air arms as a communications and general-purpose type. The Mi-1 was built in Poland by the WSK works as the SM-1, and the Polish Air Force also has in service the SM-2, developed in Poland from the Mi-1 with a lengthened, five seat front fuselage and a nose-door for stretcher loading.
| Country of origin | USSR |
| Power Plant | One 575 hp Ivchenko A1-26V piston radial. |
| Performance | Max speed: 111 mph (180 km/h) |
| Cruising speed: 84 mph (135 km/h) | |
| Inclined rate of climb : 1,280 ft/min (6.5 m/sec) | |
| Hovering ceiling (OGE) 8242 ft (3000m) rage 340 mls (550 km) | |
| Weights | Empty 4,035 lb (1,831 kg) / normal take off 5.325 lb (2 416 kg). |
| Dimensions | Rotors diam 47 ft 1 in (14.36m) |
| Fuselage length 39 ft 9 in (12.11 m) | |
| Height 10 ft 10 in (3.30 m) |
