Boeing KC-135 Stratotanker

- On 17 January 1966, a fatal collision occurred between a B-52G, 58-0256, and a KC-135A, 61-0273, flying out of Moron AB, Spain while flying over Palomares, Spain. The B-52G was on an Operation Chrome Dome mission, which required multiple air refuelings. The mishap caused both aircraft to break up in mid-air and killed all four crewmembers on the KC-135A and three of the seven on the B-52G, while causing radiological contamination as well as a nuclear weapon which had to be recovered from the sea nearby.
- On 19 January 1967, USAF KC-135A, 56-3613, crashed into Shadow Mountain (elevation 4,340 ft MSL) while descending towards Fairchild Air Force Base, killing all nine on board.
- On 17 July 1967, USAF KC-135R, 59-1465, stalled and crashed near Offutt Air Force Base after the pilot overrotated the aircraft during takeoff, causing a stall and killing one of five on board in the subsequent crash.
- On 17 January 1968, USAF KC-135A, 58-0026, stalled and crashed at Minot Air Force Base after the pilot, 15th Air Force Vice Commander MGen Charles Eisenhart, overrotated the aircraft during takeoff in a snowstorm, killing all 13 on board. This accident was instrumental in the decision to refit the KC-135 fleet with the Collins FD-109(V) integrated flight director system, in place of the earlier "round dial" cockpit layout.