In some references the aircraft is referred to by the designation GA-400R-1. The designation GA-400R is used as per the source and it is also the designation used by the FAA for the associated registration number N62N. This was the first prototype of three.
Source: "Letters to the Editor of Vertiflite", Bob Pegg, VERTIFLITE Fall 2005, Page 4
VTOL type: Helicopter
Lift devices: 1 Single main rotor
Dedicated control device: 1 Tail rotor
Crew required: 1 in Single seater arrangement
Landing gear: Skids