| JayHendrickson, Platt-LePage Aircra|
| Platt-LePage XR-1, serial number 41-001
First US Aircorps helicopter to receive the R- designation.
Two seater, lateral tandem rotor layout, with rotors mounted on winglike pylons.
XR-1 was extensively tested, but not adopted for service, due to protracted developement, and the war ending.
First flight May 1941, last flight June 1946.
07/16/2000 @ 12:33 [ref: 452]