1.Don Repo and Bob Loft died in an airplane crash.
2.We don't know why Flight 401 crashed.
3.The ghost of Don Repo appeared on all Eastern Airlines flights.
4.More than one person saw the ghost of Bob Loft.
5.All of the people who saw the ghost of Don Repo and Bob Loft were airline employees.
6.The word spotted, in line 6 means talked to.
7.The word vanished, in line 13 means disappeared.
8.You can infer that Flight 401 was probably using undamaged parts from another aircraft.