# NTSB ANC10CA001: Dehavilland DHC-2, N490K, King Salmon, AK, October 5, 2009 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 5, 2009, 11:15 local (19:15 UTC) - Place: King Salmon, AK - Coordinates: 58.958889, -155.102783 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=58.9589&lon=-155.1028&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report April 19, 2010 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Federal Aviation Administration (Operations) - NTSB case key (mKey): 74860 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC10CA001 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/74860/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=74860 - Page: https://openairdocs.org/ntsb/ANC10CA001 ## Probable cause The pilot's selection of an unsuitable takeoff area, and his decision to takeoff with a tailwind. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2808001), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Decision related to condition; cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=2808001), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=2808001), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Dehavilland DHC-2, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2808001), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot reported that he was departing to the east with a 5 knot tailwind, in a float-equipped airplane, on a Title 14, CFR Part 91 other work use flight. He said that the purpose of the flight was to demobilize a remote fishing lodge at the end of the season. The pilot reported that during the takeoff run he realized that the airplane would not become airborne before reaching the departure end of the lake, and he closed the engine throttle in an attempt to abort the takeoff. The airplane’s floats struck the shoreline, and the airplane came to rest on the shore, about 75 yards from the lake, sustaining substantial damage to the right wing. The pilot indicated that there were no preaccident mechanical problems with the airplane, and in his written report to the NTSB, he attributed the accident to “pilot error.” ## Factual narrative The pilot reported he was departing to the east with a 5 knot tailwind, in a float-equipped airplane, on a Title 14, CFR Part 91 other work use flight. He said that the purpose of the flight was to demobilize a remote fishing lodge at the end of the season. The pilot reported that during the takeoff run he realized that the airplane would not become airborne before reaching the departure end of the lake, and he closed the engine throttle in an attempt to abort the takeoff. The airplane’s floats struck the shoreline, and the airplane came to rest on the shore, about 75 yards from the lake, sustaining substantial damage to the right wing. The pilot indicated that there were no preaccident mechanical problems with the airplane, and in his written report to the NTSB, he attributed the accident to “pilot error.” ## Aircraft - Registration: [N490K](https://openairdocs.org/aircraft/N490K), registered now, S/N 1268, built 1958 (OpenAirDocs) - Reported make and model: DEHAVILLAND DHC-2 - Registry model: [Dehavilland DHC-2](https://openairdocs.org/model/dehavilland-dhc-2) (registry code 2808001) (OpenAirDocs) - Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1268 - Airframe hours: 14722 - Engines: P&W R-985 SERIES 450 horsepower reciprocating - Damage: Substantial damage - Flight: Other work use, Part 91 - Operator: Katmai Air Leasing LLC - Registered owner: Katmai Air Leasing LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 9, 2009, 43 hours before - Departed: King Salmon, AK - Destination: LHD, Anchorage, AK - Flight plan: Company VFR - Airport: runway 09 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; seat: left; flight hours: 15,980 total, 2,000 in this make and model, 225 in the last 90 days, 75 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 270° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft broken - Temperature: 39 °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 20091005050119A](https://openairdocs.org/incident/20091005050119A), Oct 5, 2009: Dehavilland DHC-2, Kulik Lodge, AK, Substantial damage. Pilot taxied for takeoff from nonvianuk lake with 3 company employees and their gear (last flight of the season). During takeoff, after coming up "on-step",… ## Docket (1 files) The files NTSB released with the investigation on November 9, 2009, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=74860. 775 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 775 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40321076&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF 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.