When Rockwell International purchased North American Aviation, it also gained ownership of the NATWT. The NATWT was then gifted to the University of California, Los Angeles (UCLA) in 1998, with the intention of NATWT becoming a university research facility. It became known as the Micro Craft Trisonic Wind Tunnel. In 2007, UCLA decided to close the trisonic wind tunnel, citing environmental issues.
The last test to be conducted at TWT was completed on August 28, 2007. It was designated as test TWT 807. TWT was demolished in 2009.