Bell XV-15 (NASA 703) and YO-3A (NASA 718) fly IRAP (inflight rotorcraft acoustics program) tests over Bell Helicopter Textron Co., Arlingtron, Texas
Photographer Dominic Hart
Bell XV-15 (NASA 703) and YO-3A (NASA 718) fly IRAP (inflight rotorcraft acoustics program) tests over Bell Helicopter Textron Co., Arlingtron, Texas