39 fatalities

Wien Consolidated Airlines Flight 55 Crash at Pedro Bay, Alaska (N4905)

Pedro Bay, United States of AmericaFlight

On December 2, 1968, a Fairchild F27 (registration N4905) operated by Wien Consolidated Airlines was involved in an aviation accident near Pedro Bay, United States of America in flight. 39 people were killed. Investigators recorded the probable cause as: The Board determines that the probable cause of this accident was an in-flight structural failure caused by an encounter with severe to extreme turbulence. This turbulence was not forecast and its presence was not known to the flight crew. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A Wien Consolidated Airlines Fairchild F-27B, N4905, crashed at Pedro Bay, Alaska, killing 39 people. The aircraft suffered an in-flight structural failure due to severe turbulence.

Accident Overview and Route Details On an unspecified date, a Wien Consolidated Airlines Fairchild F-27B, registration N4905, crashed near Pedro Bay, Alaska. The accident resulted in the deaths of 36 passengers and three crew members. The aircraft was destroyed by an in-flight breakup and subsequent ground impact. It was operating as Flight 55 in scheduled domestic passenger service from Anchorage International Airport (ANC) to Dillingham Municipal Airport (DLG), with planned en route stops at Iliamna Airport (ILI), Big Mountain Airport (BMX), and King Salmon Airport (AKN). Flight 55 departed Anchorage at 08:46 on an instrument flight plan for Iliamna and was cleared to cruise at 16,000 feet. The weather at Iliamna was reported as clear, with visibility at 15 miles at the time of departure from Anchorage. The flight proceeded toward Iliamna without reported difficulty. At 09:25, the first officer requested and was approved for a clearance to approach Iliamna. No further communication was received from the crew after this request.

Probable cause

The Board determines that the probable cause of this accident was an in-flight structural failure caused by an encounter with severe to extreme turbulence. This turbulence was not forecast and its presence was not known to the flight crew. The failure occurred in an area of the right wing (WS 197) which had been weakened to an indeterminate degree by pre-existing fatigue cracks.