Wien Air Alaska Flight 99
Encyclopedia
Wien Air Alaska Flight 99 was a scheduled domestic passenger flight that crashed into Sevuokuk Mountain, when on approach to Gambell Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

 on 30 August 1975, killing 10 of the 32 crew and passengers on board, including the pilot and co-pilot. The Fairchild F-27B aircraft was operated by Wien Air Alaska
Wien Air Alaska
Wien Air Alaska was formed from Northern Consolidated Airlines and Wien Alaska Airways. The company was famous for being the first airline in Alaska, and one of the first in the United States.-History:...

.

Flight

Wien Air Alaska
Wien Air Alaska
Wien Air Alaska was formed from Northern Consolidated Airlines and Wien Alaska Airways. The company was famous for being the first airline in Alaska, and one of the first in the United States.-History:...

 Flight 99 originated in Nome
Nome, Alaska
Nome is a city in the Nome Census Area in the Unorganized Borough of the U.S. state of Alaska, located on the southern Seward Peninsula coast on Norton Sound of the Bering Sea. According to the 2010 Census, the city population was 3,598. Nome was incorporated on April 9, 1901, and was once the...

 on August 30, 1975, bound for Savoonga and Gambell. The flight from Nome to Savoonga was uneventful, and the plane departed Savoonga for Gambell at 1327H.
As Gambell did not have a tower, the Wien agent at Gambell, upon hearing the plane radio its departure from Savoonga, turned the NDB
Non-directional beacon
A non-directional beacon is a radio transmitter at a known location, used as an aviation or marine navigational aid. As the name implies, the signal transmitted does not include inherent directional information, in contrast to other navigational aids such as low frequency radio range, VHF...

at Gambell on to aid the flight's crew in navigation.

Fog was prevalent in the Gambell area, and the crew discussed strategies to land at the airport. After several missed approaches, the plane flew north over the community, and turned east, and then south to make one final pass. The plane passed over Troutman Lake east of Gambell, and turned south, before impacting Sevuokuk Mountain at an altitude of 424 feet.

After impact, the plane broke apart and was propelled up the mountain approximately 132 feet, coming to rest inverted. A fire broke out, and the residents of the village came to aid, attempting to put the fire out with hand-held extinguishers. All but one of the injured passengers were able to escape the wreckage. Most of the injured or killed passengers were natives of Nome, Gambell, or Savoonga.

Cause

The cause of the crash, according to the NTSB, was improper IFR (Instrument Flight Rules) operation, failure to adhere to instrument approach procedures. The airplane collided with a mountain on a missed approach to landing, after multiple missed approaches. The weather at the airport was below approach minimums with a low ceiling and sea fog.
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