# NTSB ANC94LA022: Cessna 207, N36CF, Tuntutuliak, AK, December 3, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: December 3, 1993, 19:45 local (23:45 UTC) - Place: Tuntutuliak, AK - Coordinates: 60.410621, -162.649948 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=60.4106&lon=-162.6499&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 7, 1994 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2476 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC94LA022 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2476/pdf - Page: https://openairdocs.org/ntsb/ANC94LA022 ## Probable cause FAILURE OF THE PILOT TO MAINTAIN PROPER ALIGNMENT DURING THE TAKEOFF ROLL. FACTORS RELATED TO THE ACCIDENT WERE: DARKNESS AND THE SNOW BERM ALONG THE EDGE OF THE RUNWAY. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water encounter with terrain/water, takeoff - roll/run - light condition - dark night (contributing factor) - proper alignment - not maintained, pilot in command (cause) - terrain condition - snowbank (contributing factor) - terrain condition - tundra ## Analysis THE PILOT-IN-COMMAND REPORTED THAT DURING THE TAKEOFF ROLL, THE AIRPLANE'S LEFT MAIN LANDING GEAR WHEEL COLLIDED WITH A SNOW BERM, WHICH RESULTED IN THE LOSS OF DIRECTIONAL CONTROL. THE AIRPLANE THEN EXITED THE RUNWAY AND WENT ONTO TUNDRA. ## Factual narrative On December 03, 1993, at approximately 1945 Alaska standard time, a wheel equipped Cessna 207 airplane, N36CF, operated by Yute Air Alaska, Inc., crashed during takeoff from runway 20 at Tuntutuliak, Alaska. The commercial certificated pilot-in- command, the sole occupant, was not injured and the airplane sustained substantial damage. The positioning flight was being conducted under 14 CFR Part 91 when the accident occurred. The intended destination was Bethel, Alaska. Visual meteorological conditions prevailed and a company VFR flight plan was in effect. In a telephone interview on the evening of December 03, 1993, the pilot-in-command told the NTSB investigator-in-charge that during the takeoff roll, the plane's left main landing gear wheel got too close to the east side edge of the runway and the snow pulled the airplane off the runway resulting in substantial damage to the left wing. The pilot said that he had accrued a total flight time of approximately 2460 hours of which about 125 hours were in the Cessna 207. ## Aircraft - Registration: [N36CF](https://openairdocs.org/deregistered/N36CF-2012-05-07), registration cancelled 2012-05-07, S/N 20700269, built 1974 (OpenAirDocs) - Reported make and model: CESSNA 207 - Registry model: [Cessna 207](https://openairdocs.org/model/cessna-207) (registry code 2073602) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20700269 - Airframe hours: 20275 - Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Registered owner: Yute Air Alaska, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, December 1, 1993, 6 hours before - Destination: BET, BETHEL, AK - Flight plan: Company VFR - Airport: AK61, Tuntutuliak, runway 20, 1,800 × 100 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 24; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 2,285 total, 127 in this make and model, 2,225 as pilot in command, 223 in the last 90 days, 120 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Night/dark - Visibility: 5 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 19931203047519A](https://openairdocs.org/incident/19931203047519A), Dec 3, 1993: Cessna 207, Tuntutuliak, AK, Substantial damage. Left wheel got too close to edge of snow compacted strip. Encountered a drift. Pulled aircraft off runway. ## Other investigations on N36CF (3) 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. - [NTSB ANC09LA012](https://openairdocs.org/ntsb/ANC09LA012), Nov 14, 2008: Cessna 207 (N36CF), Napaskiak, AK, substantial damage. Probable cause: The pilot's continued flight into adverse weather and icing conditions, and his failure to maintain sufficient airspeed to avoid a stall, resulting in a loss of control and in-flight collision with… - [NTSB ANC05LA041](https://openairdocs.org/ntsb/ANC05LA041), Feb 16, 2005: Cessna 207 (N36CF), Kipnuk, AK, substantial damage. Probable cause: The pilot's failure to maintain directional control of the airplane during the landing roll, which resulted in a departure from the runway and collision with a snow bank. A factor contributing to the… - [NTSB ANC99LA153](https://openairdocs.org/ntsb/ANC99LA153), Sep 17, 1999: Cessna 207 (N36CF), Bethel, AK, substantial damage. Probable cause: The pilot's failure to maintain a visual lookout for a parked airplane during taxi. 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.