# NTSB ANC05LA082: deHavilland DHC-2, N43446, King Salmon, AK, June 10, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 10, 2005, 09:30 local (17:30 UTC) - Place: King Salmon, AK - Coordinates: 58.676944, -156.649169 - Nearby events: https://openairdocs.org/map.md?lat=58.6769&lon=-156.6492&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 6 uninjured - Status: Completed, report December 20, 2005 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA-ANC FSDO 03 - NTSB case key (mKey): 61669 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC05LA082 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61669/pdf - Page: https://openairdocs.org/ntsb/ANC05LA082 ## Probable cause The pilot's failure to correct for torque/P-Factor during the takeoff run, and his delay in aborting the takeoff, which resulted in a loss of directional control and subsequent wing collision with the surface of the water. A factor contributing to the accident was a left crosswind. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, takeoff - roll/run - torque/p-factor - not corrected, pilot in command (cause) - aborted takeoff - delayed, pilot in command (cause) - weather condition - crosswind (contributing factor) - On ground/water encounter with terrain/water, takeoff - aborted - terrain condition - water ## Analysis The commercial certificated pilot was departing on a river toward the southeast in a float-equipped airplane. He said that the airplane was on-step, when it began an uncommanded left turn. He attempted to counteract the turn by applying right rudder and right aileron, but there was no change. The pilot indicated that he aborted the takeoff by pulling the engine power to idle. The airplane continued a hard left turn, and the right wing struck the water. The pilot said the right wing was bent upward about 40 degrees, at the right wing lift strut attach point. In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the pilot, he indicated that after returning to the dock, he noticed a light wind of about 8 to 10 knots from the north. ## Factual narrative On June 10, 2005, about 0930 Alaska daylight time, a float-equipped deHavilland DHC-2 airplane, N43446, sustained substantial damage when the right wing struck the water during an aborted takeoff from the King Salmon Seaplane Base, King Salmon, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country business flight under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by ALY LLC, dba Alaska Rainbow Lodge, King Salmon. The commercial certificated pilot, and the five passengers, were not injured. Visual meteorological conditions prevailed, and VFR company flight following procedures were in effect. The flight was en route to the lodge, located on the Kvichak River. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on June 10, the pilot reported that he was departing on the river in the southeast water lane. He said that the airplane was on-step, when it began an uncommanded left turn. He attempted to counteract the turn by applying right rudder and right aileron, but there was no change. The pilot indicated that he aborted the takeoff by pulling the engine power to idle. The airplane continued a hard left turn, and the right wing struck the water. The pilot said the right wing was bent upward about 40 degrees, at the right wing lift strut attach point. He was able to taxi back to the dock, and disembark his passengers. In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the pilot, he indicated that after returning to the dock, he noticed a light wind of about 8 to 10 knots from the north. ## Aircraft - Registration: [N43446](https://openairdocs.org/aircraft/N43446), registered now, S/N 1355, built 1958 (OpenAirDocs) - Reported make and model: deHavilland DHC-2 - Registry model: [Dehavilland BEAVER DHC-2](https://openairdocs.org/model/dehavilland-beaver-dhc-2) (registry code 2800108) (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: 1355 - Airframe hours: 15063 - Engines: Pratt & Whitney R-985 450 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Operator: Alaska Rainbow Lodge Inc., doing business as Alaska Rainbow Lodge - Registered owner: Aly LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 1, 2005, 25 hours before - Departed: AKN, King Salmon, AK - Destination: King Salmon, AK - Flight plan: Company VFR - Airport: AKN, King Salmon Seaplane Base ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; injuries: none; recreational; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review May 1, 2005; seat: left; flight hours: 1,170 total, 496 in this make and model, 1,111 as pilot in command, 65 in the last 90 days, 65 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 30° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft overcast - Temperature: 50 °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 20050610015049A](https://openairdocs.org/incident/20050610015049A), Jun 10, 2005: Dhav DHC2*, King Salmon, AK, Substantial damage. (-23) On takeoff, aircraft entered into gradual left turn that increased to the point the pilot decreased power. Aircraft then turned sharply further left and… 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.