*No Variant assigned
May 3, 1977
XV-15 TRRA:
First flight of the NASA/Army/Bell XV-15 TRRA tilt rotor
March 15, 1990
XV-15 TRRA:
The Bell XV-15 captures five official FAI records
June 4, 1990
XV-15 TRRA:
Bell XV-15 takes a record for speed over a recognized course
April 21, 1995
XV-15 TRRA:
First tilt rotor landing at the world's first civil vertiport (Bell XV-15)
July 11, 2003
XV-15 TRRA:
Bell XV-15 completes its last research flight