The Hiller X-2-235 was an experimental American coaxial helicopter developed in the 1940s that helped pave the way for the successful Hiller Model 360 and H-23 Raven.

A historian is restoring what he says is "undoubtedly the oldest helicopter in the Yukon," which crashed in 1952 outside Old Crow. Bob Cameron says the Hiller 360 helicopter is surprisingly ...

STANLEY HILLER JNR, who has died aged 81 at his home in California, was recognised worldwide as a pioneer of helicopter design and manufacture. Still a teenager when he started his own company, Hiller ...