On final approach to Ellsworth AFB, while completing a local training sortie, all eight engine lost power. The aircraft stalled and crashed onto a building containing the equipment for the instrument landing approach system and located short of runway. Two crew members were killed while six others were injured. Three people working in the building were killed as well. Crew: Cpt Melvin J. Rudd, pilot, Sgt Richard Gilbert, navigator, Cpt Verle Rusk, navigator, 1st Lt Leonard R. Scotty, electronic countermeasures officer, T/Sgt Oscar Orrs, gunner, 1, Cpt John O'Connell Jr., navigator, † 1st Lt Kenneth B. Kaeppler, radar navigator. † Those killed on ground were: A1c Ronald R. Mitchell, A1 James E. Ferrell, Mr. Glen M. Allen.
Probable cause (official findings): The accident was the result of a fuel pump screen iced over, leading to a total power loss on all engines.