The XO-60 represents the final evolution of the Autogiro before the type became obsolete. The slow loitering speeds and almost vertical takeoff and landing abilities of the XO-60 made it ideal for military observation duties. However, the inability to hover sealed the fate of the Autogiro after the development of helicopters. This XO-60 was fully restored by the NASM in 1975 and is now on display at the Udvar-Hazy Center.
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