TF-104GA pair of two seat TF-104Gs were delivered to the NASA Flight Research Center on June 27, 1975. The aircraft flew a variety of missions over the next 18 years, including tests of the Thermal Protection System (TPS) used on the Space Shuttle.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/tf-104g/Copy URL to clipboard> DownloadShareSize1041x781px