# NTSB ANC94LA034: Cessna 206, N60491, New Koliganek, AK, February 11, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 11, 1994, 17:20 local (21:20 UTC) - Place: New Koliganek, AK - Coordinates: 58.820804, -157.860534 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=58.8208&lon=-157.8605&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 12, 1995 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2486 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC94LA034 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2486/pdf - Page: https://openairdocs.org/ntsb/ANC94LA034 ## Probable cause THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE. FACTORS IN THE ACCIDENT WERE THE STRONG CROSSWINDS AND THE ICY/SNOW COVERED TAXI SURFACE. ## Analysis THE PILOT LANDED ON RUNWAY 30 WITH WIND FROM 320 AT 25 TO 28 KNOTS. AFTER THE CARGO WAS UNLOADED THE PILOT TAXIED FOR TAKEOFF. WHILE TAXIING ON RUNWAY 22, AS THE AIRPLANE TAXIED BEYOND THE COVER OF SEVERAL BUILDINGS, IT BEGAN TO SLIDE SIDEWAYS TO THE LEFT. THE PILOT ADDED POWER IN AN ATTEMPT TO CONTROL THE AIRPLANE BUT IT CONTINUED TO SLIDE AND THEN FLIPPED OVER. ## Factual narrative On February 11, 1994, at approximately 1720 Alaska standard time, a wheel equipped Cessna 206 airplane, N60491, registered to and owned and operated by Yute Air Alaska, Inc. nosed over while taxiing for takeoff at the airport in New Koliganek, Alaska. The commercial certificated pilot-in-command, the sole occupant, was not injured and the airplane sustained substantial damage. The repositioning flight, conducted under 14 CFR Part 91, was taxiing for takeoff when the accident occurred. Visual meteorological conditions prevailed and a company VFR flight plan was in effect. During a telephone interview on the afternoon of February 16, 1994, the pilot-in-command told the NTSB investigator-in- charge that a few minutes prior to the accident, he landed on runway 30 at New Koliganek and at that time the wind was blowing from about 320 degrees magnetic at 25 to 28 knots. After unloading all of the cargo on board the plane, he proceeded to taxi for takeoff down runway 22. To the best of his knowledge, the wind direction and velocity were generally about the same as that encountered during the landing. As a result of the right quartering tailwind, he applied down aileron to the right wing and down elevator (yoke forward). The plane's wing flaps were retracted. As the airplane taxied beyond the cover of several buildings, it began to slide sideways to the left. He applied additional power to about 1700-1800 RPMs but the airplane kept sliding and flipped upside down near the center crown of the runway. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, taxi - to takeoff - directional control - not maintained, pilot in command (cause) - terrain condition - snow covered (contributing factor) - terrain condition - icy (contributing factor) - weather condition - high wind (contributing factor) - weather condition - crosswind (contributing factor) - Nose over, taxi - to takeoff ## Aircraft - Registration: [N60491](https://openairdocs.org/deregistered/N60491-2004-12-28), registration cancelled 2004-12-28, S/N U20602025, built 1973 (OpenAirDocs) - Reported make and model: CESSNA 206 - Registry model: [Cessna U206F](https://openairdocs.org/model/cessna-u206f) (registry code 2073333) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Airframe hours: 4105 - Engines: Continental IO-520 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 91 - Operator: Yute Air Alaska, Inc - Registered owner: Yute Air Alaska, Inc - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, January 31, 1994, 19 hours before - Departed: KNW, NEW STUYAHOK, AK - Flight plan: Company VFR - Airport: KGK, Koliginak, runway 22, 1,400 × 50 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 26; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,520 total, 15 in this make and model, 1,350 as pilot in command, 50 in the last 90 days, 40 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 320° at 25 knots, gusting 30 - Visibility: 20 statute miles - Lowest ceiling: none - Temperature: 16 °F ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19940211003559A](https://openairdocs.org/incident/19940211003559A), Feb 11, 1994: Cessna U206F, New Koliganek, AK, Substantial damage. Blown over during taxi for takeoff by strong quartering tailwind gust. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.