This was the third and last D-558-1 built. Built under USN contract with BuNo 37972, it was delivered new directly to NACA in 1949. The a/c conducted 78 flights with NACA and was retired 10 June 1953. It is currently at the Sullenberger Aviation Museum (formerly the Carolinas Aviation Museum) in Charlotte, North Carolina.

This recently restored Skystreak is one of only two surviving examples.

Although the Bell X-1 has taken all the glory other aircraft were used in the transonic test program. This Skystreak (ex BuNo 37972, the third and last built) flew 78 missions for the National Advisory Committee for Aeronautics accummulating lots of invaluable flight test data near the speed of sound. This one of only two that survive and is on display at the very interesting Carolinas Aviation Museum.

Ex BuNo 37972 in open storage and display at MCAS Quantico, Virginia. Later restored and loaned to the Carolinas Air Museum, Charlotte, NC