8 May 1956 -A USAF Martin B-57C-MA Canberra, 53-3858, crashed on the Ship Shole island bombing range near Langley AFB, Virginia, killing both crewmembers.
From the accident report: “Cause of accident – Undetermined”.
The aircraft was observed to be flying in a northeasterly direction at an estimated 500 feet altitude and traveling at a high rate of speed. It is probable that the speed was 425 knots indicated, because this was the prebriefed airspeed since the aircraft was on the run-in route on the LABS bombing range.
Witnesses observing the aircraft reported that everything appeared to be normal. The aircraft was then seen to abruptly dive and disappear; this was followed by an immediate explosion. The instructor pilot and the pilot of this dual control B-57C were both KWF. (1)
Source: Wikipedia/Portal: Aviation