Accident Fairchild F-27B N4905,
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Date:Monday 2 December 1968
Type:Silhouette image of generic F27 model; specific model in this crash may look slightly different    
Fairchild F-27B
Owner/operator:Wien Consolidated Airlines
Registration: N4905
MSN: 49
Year of manufacture:1959
Total airframe hrs:17194 hours
Engine model:Rolls-Royce Dart 514-7E
Fatalities:Fatalities: 39 / Occupants: 39
Aircraft damage: Destroyed, written off
Location:42 km E of Iliamna Airport, AK (ILI) -   United States of America
Phase: Approach
Nature:Passenger - Scheduled
Departure airport:Anchorage International Airport, AK (ANC/PANC)
Destination airport:Iliamna Airport, AK (ILI/PAIL)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
A Wien Consolidated Airlines Fairchild F-27B, N4905, crashed at Pedro Bay, Alaska. The 36 passengers and three crewmembers were killed in the accident and the aircraft was destroyed by in-flight breakup and ground impact.
The aircraft was being operated as Flight 55 in scheduled domestic passenger service between Anchorage International Airport, AK (ANC) and Dillingham Municipal Airport, AK (DLG) with en route stops at Iliamna Airport, AK (ILI), Big Mountain Airport, AK (BMX), and King Salmon Airport, AK (AKN).
Flight 55 departed from Anchorage at 08:46 on an instrument flight plan for Iliamna. The flight was cleared to cruise at 16,000 feet. The weather at Iliamna was reported to be clear, and the visibility was 15 miles at the time of the flight's departure from Anchorage.
The flight proceeded toward Iliamna without reported difficulty, and at 09:25, the first officer requested a clearance for an approach to Iliamna. This request was approved. No further communication was received from the crew.
Ground witnesses in and around the Pedro Bay area reported that they saw a fireball and a large cloud of black smoke which appeared to be behind the wing of the aircraft. The aircraft appeared to continue on course for a short period of time, then pieces of the aircraft were seen falling, and the aircraft entered a spinning descent.
The major portion of the wreckage was located on the southern shore of Foxies Lake at an elevation of approximately 220 feet.

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 flightcrew. 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."

Accident investigation:
Investigating agency: NTSB
Report number: NTSB/AAR-70-16
Status: Investigation completed
Duration: 1 year and 7 months
Download report: Final report




photo (c) Frank Ellemers Collection; Anchorage International Airport, AK (ANC/PANC)

Revision history:


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