Technical data
Type	Mi-4
Function	transport
Year	1952
Crew	3
Engines	1*1700hp Shvetsov ASh-82V
Rotor Span	21m
Length	25.02m
Height	5.18m
Disc Area	346m2
Empty Weight	5390kg
Maximum Weight	7800kg
Speed	160km/h
Ceiling	5500m
Range	400km

76k b/w Mi-4 supporting firefighters in Siberia. From the 'Notes of an aircraft designer' by A.Yakovlev;