Wien Consolidated Airlines Flight 55 was a scheduled domestic passenger flight in Alaska that crashed into Pedro Bay on 2 December 1968, killing all 39 on board. The Fairchild F-27B aircraft was operated by Wien Consolidated Airlines and was en route to Dillingham from Anchorage, with three intermediate stops. The NTSB investigation revealed that the aircraft suffered a structural failure after encountering "severe-to-extreme" air turbulence. The accident was the second-worst accident involving a Fairchild F-27 at the time, and currently the third-worst accident involving the aircraft.