S. David Griggs

Stanley David Griggs 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) – crashed near Earle, Arkansas.

Biography from Launch Library 2.

• Space Shuttle Discovery / OV-103 | STS-51-D — Mission Specialist · Success · April 12, 1985

• STS-51-D EVA (Placeholder) — 1985-04-16 · 3h 6m