The most extraordinary and credible research into the ghost phenomenon ever documented is the so-called "Ghosts of Flight 401." On December of 1972, an Eastern Airlines Tri-Star jetliner, Flight 401, crashed into a Florida swamp. The pilot, Bob Loft (on the left), and flight engineer Don Repo (on the right), were two of the 101 people who perished in the air crash. Not long after the crash, the ghosts of Loft and Repo were seen on more than twenty occasions by crew members on other Eastern Tri-Stars, especially those planes which had been fitted with parts salvaged from the Flight 401 wreckage. The apparitions of Loft and Repo were invariably described as being extremely lifelike. They were not only reported by people who had known Loft and Repo, but their ghosts were also subsequently identified from photographs by people who had not known Loft and Repo.

The strange tales of the ghostly airmen of Flight of 401 circulated in the airline community. An account of the paranormal happenings even appeared in a 1974 US Flight Safety Foundation's newsletter. John G. Fuller, the best-selling author of The Ghost of Flight 401, carried out an exhaustive investigation into the hauntings with the aid of several cautious airline personnel. A mass of compelling testimony was produced as a result. The website Flight 401 The Black Box Story provides an account of the crash as told using material from the Black Box. It highlights how poor ****pit resource management caused a tiny light bulb to distract the pilots and bring down a Tristar jetliner

http://theunexplainedmysteries.com/Ghosts-of-Flight-401.html