Norman Albert Riddell was 60 when he boarded a small aircraft that failed to arrive on its July 18, 1981 flight from Port Walter to Port Lucy, Alaska. He was traveling with Judy Riddell, Randall Riddell, and Rob Mourant; the four were reported overdue and none of them, nor the aircraft, have ever been found.

The official position is that all four are presumed dead after a likely aviation accident over a rugged, sparsely populated portion of Alaska. The flight path would have taken them over remote terrain, and no wreckage or communications were recovered, leaving the circumstances unclear.

This disappearance remains unresolved and is part of a larger pattern of aircraft losses in Alaska’s difficult environment. Does anyone have family recollections, photos, or local knowledge about the Port Walter–Port Lucy route or searches conducted in July 1981 that could help clarify what happened?