First flight of the Platt-LePage XR-1
Monday, June 23, 1941 - Eddystone, PA, United States of America
This was the first aircraft to win a US Army Air Corps contract. The aircraft had lifted off the ground, whilst tethered, on 12 May 1941. It was also the first American military helicopter that had some level of control.
To see a video of the XR-1 in flight, click on this link.
See AHS Calendar June 2012 for more details.