2 Ergebnisse für: 1.535.859
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720p HD Strange Helicopter! (twin counter-rotating blades) for heavy lift - YouTube
https://www.youtube.com/watch?v=FqWvDEMOzOo&feature=related
This unusual helicopter was being used to transport large and apparently heavy loads to the construction crews at remote 500kv power transmission line tower ...
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Sikorsky S-52 First Helicopter Loop - 1949 - YouTube
https://www.youtube.com/watch?v=xhRUGKa_ImY
H E "Tommy" Thompson loops the Sikorsky S-52 helicopter in 1949. First recorded helicopter loop from 8mm movie. Thompson also set an international speed reco...