Editing Piasecki Helicopter (section)

===Piasecki is forced out===
[[File:Piasecki YH-16 helicopter in flight.jpg|thumb|right|YH-16 prototype in flight]]
[[Donovan Berlin|Don R. Berlin]] was brought in as president and director of Piasecki Helicopters in 1953,<ref name="Miller">{{cite news |author=Miller, Steven |url=http://www.nysun.com/obituaries/frank-piasecki-88-vertical-flight-pioneer/71281/ |title=Frank Piasecki, 88, Vertical Flight Pioneer |newspaper=The New York Sun |date=February 14, 2008 |accessdate=June 2, 2013 |archive-date=October 2, 2013 |archive-url=https://web.archive.org/web/20131002231641/http://www.nysun.com/obituaries/frank-piasecki-88-vertical-flight-pioneer/71281/ |url-status=dead }}</ref> while Frank Piasecki was chairman of the board. Under Piasecki, the company began the PV-15 large transport tandem helicopter project (designated [[Piasecki H-16 Transporter|H-16]]). The prototype PV-15 was first flown in 1953, but a fatal crash in January 1956 led to the cancellation of the project.<ref name=Vertical-legacy/>

The majority owners eventually lost faith in Frank Piasecki's leadership and by May 1956 he was forced out of the company. He had formed a new company, [[Piasecki Aircraft|Piasecki Aircraft Corporation]] to pursue the development of compound helicopters and other rotorcraft. In two successive special stockholders' meetings the board then changed the name of Piasecki Helicopter to '''Vertol''' (for [[vertical take-off and landing]]) Aircraft Corporation and amended the bylaws to bar Piasecki's re-election as a director, on the grounds that he was running a rival company.<ref name="trimble"/>{{rp|257–8}}