Later sold on the civil market as F-GKYD.

The first of six prototype Bell-Boeing YV-22A tilt rotors was photographed at the Bell Flight Test Center at Arlington Municipal Airport, Texas on February 6, 1990. This was the first V-22 to hover almost a year earlier at Arlington on March 19, 1989 and the first to fly in fixed-wing mode on Sept. 14, 1989. It's seen here being pushed back into the text flight hangar after ground testing.

The first of six prototype Bell-Boeing YV-22A tilt rotors seen at the Bell Flight Test Center at Arlington Municipal Airport, TX on February 6, 1990. This was the first V-22 to hover on March 19, 1989 and the first to fly in fixed-wing mode on Sept. 14, 1989. Note the tuffs on the nacelle to track air flow. Behind the aircraft to the left and right are elevated test stands where the V-22 ground ran with the nacelles and rotors in vertical or horizontal flight mode. The fuselage of 163911 was reported at MCAS New River and later the Hickory Aviation Museum in Hickory NC in 2016. Current status?

NASA gave Bell the "go ahead" to develop two VX-15 tilt rotor research aircraft in Sep. 1973. On May 3, 1977, the prototype, N702NA, made its first fight (hover) at the Bell Flight Test Centre at Arlington Municipal Airport (KGKY) after extensive ground tests. Both XV-15s prototypes spent their early years at NASA Ames (KNUQ), but after the 1981 Paris Air Show, N702NA returned to Bell in Texas for further testing. It is seen in Feb. 1990 at at Arlington with the prototype V-22 Osprey. On Aug. 22, 1992, N702NA crashed at Arlington. The cockpit of the wreck was salvaged and became a simulator.

Originally delivered to Canadian Pacific Air Line in September 1953 as CF-CUT. As seen also here in AirHistory.net, it has more colorful c/s earlier, but got this one most likely after 1983 when owned first by company called Vortex Air International as N11VX and then Universal Air Equipment Leasing as N9779N. Companies which flights favored low visibility. Bought by Florida Aircraft Leasing on January 1990 and ferried to KFLL, where broken up spares by April 1992.