The mystery man passed a flight attendant a note while on a Northwest Orient Airlines flight in Portland, Oregon, bound for Seattle on Nov. 24, 1971.

The aircraft made an emergency landing at Osaka Kansai International Airport after a cabin pressure issue. Thankfully, no injuries were reported.

In 1950, Northwest Orient Flight 25-01 vanished over Lake Michigan during severe weather, resulting in the deaths of all 58 people on board. Despite extensive searches, the wreckage was never ...

Northwest Orient Airlines Flight 2501, at the time the deadliest commercial airlines disaster in American history, disappeared when it flew into a storm over Lake Michigan on June 24, 1950.