Mil Mi-17 (Kazan Mi-17) The Mil Mi-17 is the export Mi-8: a twin-turbine Russian transport helicopter built since 1977. Origins, variants, performance and who flies it.
Sikorsky S-92 The Sikorsky S-92 is a 19-seat twin-engine helicopter flown offshore, on rescue missions and as Marine One. Its history, price, variants and safety record.