NASA's former Landing Systems Research Aircraft (LSRA) Convair 990 N810NA sits adjacent to the entrance to the airport on November 11, 2007. Its Convair airframe number is 30-10-29. It was delivered to American Airlines in May 1962 as N5617. Modern Air Transport purchased it in 1968. NASA acquired it for use at Ames Research Center in May 1975 and registered it as N713NA. NASA later re-registered it as N710NA. It was used at the Ames Research Center until 1983 when it was withdrawn from use. It was stored at Marana, Arizona until it was refurbished in 1989 for use at the Dryden FRC, where it was registered as N810NA. After serving as the Landing Systems Research Aircraft in 1993 and 1994, it was retired to Mojave. It is 1 of 2 relatively intact 990s remaining at Mojave. (thanks to Goleta Air and Space Museum for this info)