By James Heinz
A previous article on this blog told the story of Northwest Airlines flight 2501. It disappeared over Lake Michigan on June 24, 1950, while on a flight from Benton Harbor, Mich., to Milwaukee. https://wmhs.org/search-for-missing-airliner-finds-lost-shipwrecks-after-author-clive-cussler-and-tv-producer-josh-gates-show-interest/
And on June 24, 2025, the search for America’s only missing airliner was called off.
Since 2004 the Michigan Shipwreck Research Association had been searching for the missing airliner. MSRA spent 20 years, 10,000 hours, and about $500,000 searching 700 square miles of Lake Michigan for Flight 2501. But, on the 75th anniversary of the crash, Valerie Van Heest of MSRA announced that they will be searching no longer.
Valerie Van Heest’s book Fatal Crossing
Van Heest, who literally wrote the book on 2501, entitled “Fatal Crossing”, feels that the DC-4 broke up into small pieces that have sunk into the muck at the bottom of Lake Michigan to a depth that sonar can no longer detect.
Witnesses at the time reported seeing a flash in the sky over the Lake. Van Heest believes that the aircraft was caught in a microburst from a thunderstorm that was in the area at the time and broke up when it hit the surface of the Lake. Others believe that the aircraft may have exploded in the air, accounting for the flash in the sky.
The greatest clue to what caused 2501 to disappear may be the condition of the human remains of some of the 58 people aboard that were recovered from the surface of the Lake. Not one intact body was found. Instead, dismembered body parts were all that were recovered. One young boy found a human lung on the beach in Michigan.
What strikes me in reading accounts of the wreck is how primitive commercial aviation was at that time. The DC-4 was unpressurized and flying at an altitude of 3,500 feet. The pilot had no on board weather radar and was navigating by looking at the lightning flashes from the thunderstorm. There was no air traffic control radar tracking the flight, and ATC could only track the flight and help them avoid other airplanes through position reports radioed by the pilots.
Flight 2501 was the largest loss of life in an airline disaster in American history to that time, but it occurred the day before the Korean War broke out and so it was quickly forgotten. Only conspiracy buffs remembered it as proof of the Lake Michigan Triangle or because the flash in the sky was evidence of UFO activity. The search was at first made possible by assistance from adventure novelist Clive Cussler and was profiled in an episode of the Discovery Channel show “Expedition Unknown” by host Josh Gates.
In addition to searching for the wreck, Van Heest tracked down the two unmarked mass graves that contained the dismembered body parts of the crew and passengers. She also notified every living relative of those who were aboard, and saw that the graves were marked and that memorial services were held.
The search was not a complete failure from the standpoint of the MSRA. Although they did not find 2501, they did find several lost shipwrecks.
That they did not find the missing airplane is not surprising, since the MSRA web site lists eight other missing aircraft in the same area dating back to the 1930s. Two pioneering 19th century balloonists went missing in the area and have never been located either. Michigan state underwater archeologist Wayne Lusardi told me that he has a list of about 1,000 aircraft that have gone missing in Lake Michigan. That includes the Soviet space satellite Sputnik 4 which crashed in the lake near Manitowoc in 1962. https://wmhs.org/on-this-day-a-lake-michigan-wreck-fell-from-outer-space/
There is an exhibit on the missing aircraft at the Heritage Museum and Cultural Center in St. Joseph, Mich., which displays some of the clothing and personal effects recovered from Lake Michigan of the passengers.
Photos are courtesy of the MSRA website.
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James Heinz is the Wisconsin Marine Historical Society’s acquisitions director. He became interested in maritime history as a kid watching Jacques Cousteau’s adventures on TV. He was a Great Lakes wreck diver until three episodes of the bends forced him to retire from diving. He was a University of Wisconsin – Milwaukee police officer for thirty years. He regularly flies either a Cessna 152 or 172
