Boeing XCH62 ( plus bonus CH54 Skycrane , Cessna YH41 Seneca, Fairchild VZ5 Fledgeling)

In 1967, the Soviet Mil V-12 helicopter made its first lift-off successfully. The US military had an urge to match or top this heavy-lift helicopter. In early 1970, a joint Army and Navy working committee was formed to study the development of a heavy lift helicopter. The requirement for a 22-ton payload class HLH was issued. Boeing proposed the tandem-rotor Model 301 that was about twice size of the Chinook. Other design included in the competition was the Sikorsky S-73. In 1973, a contract was awarded to Boeing for the construction of one prototype, designated XCH-62. In 1975, the XCH-62 prototype had been 90% complete, being readied for a planned initial flight the next year, but Congress declined to provide further funding. The incomplete XCH-62 program was terminated. In 1983, the Army and NASA proposed collaboration to finish the aircraft for experimental flights but Congress again refused to fund the project. The XCH-62 remained in storage until 1987 when it was decided that it should be placed in the US Army Aviation Museum at Fort Rucker, Alabama