Northwest Flight 2501 crashed into Lake Michigan 75 years ago this week. But clues uncovered in 20 years of searching lessen the mystery.

Seventy-five years after Lake Michigan's worst aviation disaster, grave markers in South Haven and St. Joe stand as silent ...

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.

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 found.

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.