In 1962 a Lockheed Constellation took off over the Pacific Ocean carrying 96 soldiers and 11 crewmen, and then disappeared forever. The military conducted one of the largest search-and-rescue missions in the history of the Pacific, but never found a trace of their lost soldiers. Flying Tiger Line, an early cargo airline and military contractor, speculated that the flight had been hijacked or otherwise sabotaged, but admitted that they had no evidence tu support their theories. Sailors aboard a Liberian tanker reported a fireball splashing into the sea, which suggest that Flight 739 exploded in midair. That was never confirmed.
- EgyptAir Flight 990, October 31, 1999.
- Aviation Mysteries of All the Time