On August 17, 1981, 33-year-old William Bill Arthur Tiedeman flew from Anchorage to Grayling in a red and white Cessna 180, tail number N3424Y, with three other men: Kenneth Fischer, Robert Hawk, and Larry Larson. The aircraft was routed over Rainy Pass, terrain known for challenging weather. Tiedeman was described as having brown hair and brown eyes and wearing a dark blue denim jacket, blue jeans, brown engineer-style boots, a digital watch, and a necklace made with bear claws and coins.

The plane never arrived in Grayling and was reported overdue. The Alaska State Troopers mounted a search and rescue effort, but no wreckage, distress signals, or other evidence was ever found. The disappearance left no clear answers and the file has since gone cold, with the families still seeking resolution.

Did anyone have contact with these men or see the Cessna in the Anchorage or Rainy Pass area on or after August 17, 1981?