Stanley David Griggs (September 7, 1939 – June 17, 1989) was a United States Navy officer and a NASA astronaut. He is credited with conducting the first unscheduled extra-vehicular activity of the space program during Space Shuttle mission STS-51-D. Griggs was killed when the vintage World War II-era training aircraft he was piloting – a North American AT-6D (registration N3931S)[1] – crashed near Earle, Arkansas.
In 1967 Griggs entered the U.S. Naval Test Pilot School at Patuxent River, Maryland and upon completion of test pilot training was assigned to the Flying Qualities and Performance Branch, Flight Test Division, where he flew various test projects on fighter and attack-type aircraft. In 1970, he resigned his regular United States Navy commission and affiliated with the Naval Air Reserve in which he achieved the rank of Rear Admiral.
Waving to the orbiter during his 3-hour EVA aboard mission STS-51-D
In July 1970, Griggs was employed at the Lyndon B. Johnson Space Center as a research pilot, working on various flight test and research projects in support of NASA programs. In 1974, he was assigned duties as the project pilot for the Space Shuttle trainer aircraft and participated in the design, development, and testing of those aircraft pending their operational deployment in 1976. He was appointed Chief of the Shuttle Training Aircraft Operations Office in January 1976 with responsibility for the operational use of the shuttle trainer, and held that position until being selected as an astronaut candidate by NASA in January 1978. In August 1979, he completed a one-year training and evaluation period and became eligible for Space Shuttle flight crew assignment.
From 1979 to 1983, Griggs was involved in several Space Shuttle engineering capacities including the development and testing of the Head-Up Display (HUD) approach and landing avionics system, development of the Manned Maneuvering Unit (MMU), and the requirements definition and verification of on-orbit rendezvous and entry flight phase software and procedures. In September 1983 he began crew training as a mission specialist for flight STS-51-D, which flew April 12–19, 1985. During the flight, Griggs conducted the first unscheduled extravehicular activity (space walk) of the space program. The space walk lasted for over three hours during which preparations for a satellite rescue attempt were completed.
At the time of his death, Griggs was in flight crew training as pilot for STS-33, a dedicated Department of Defense mission, scheduled for launch in November 1989. He was buried at Arlington National Cemetery.[2]
