Date & Time: Oct 23, 1968 at 1340 LT
Crew on board:
Pax on board:
Captain / Total hours on type:
The aircraft was engaged in a mission consisting of atmospheric research. En route, in unknown circumstances, the airplane went out of control and crashed into a lake located in the region of Houghton, Michigan. SAR operations were conducted but eventually suspended few days later as no trace of the aircraft nor the three occupants was found.
Due to lack of evidences, the cause of the accident could not be determined.