What happened
During the execution of the Linebacker II mission over Vietnam, an aircraft departing from Andersen Air Force Base on Guam Island was intercepted while flying near Hanoi. During the flight, the plane was struck by an enemy SA-2 surface-to-air missile. The impact caused the aircraft to crash in the Kinh No area.
On board the aircraft were seven crew members at the time of the incident. The crash resulted in four fatalities and left three other crew members to be captured and held as prisoners of war.
Findings
Investigations into the loss of the aircraft determined that the primary reason for the crash was that the plane was hit by enemy surface-to-air missile fire while operating in hostile airspace.