MOSCOW — Russian Helicopters is planning to resume the development of the re-engined Mil Mi-34S1 light helicopter. The Mi-34S1 is envisioned as an improved version of 1,450-kg (3,200-lb.) Mi-34 training and sport rotorcraft, which suspended production in the early 2000s. This program initially called for replacement of the outdated 325-hp M14V26V piston engine with the 365-hp M9FV variant and installation of new avionics and an improved interior. The first prototype with the new ...


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