# NTSB ANC07CA089: Cessna U206G, N4773U, Iliamna, AK, August 18, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 18, 2007, 08:00 local (16:00 UTC) - Place: Iliamna, AK - Coordinates: 59.205001, -154.97528 - Nearby events: https://openairdocs.org/map.md?lat=59.2050&lon=-154.9753&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 29, 2007 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 66717 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC07CA089 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66717/pdf - Page: https://openairdocs.org/ntsb/ANC07CA089 ## Probable cause The pilot's inadequate compensation for gusty wind conditions, which resulted in the float-equipped airplane's right wing striking the bottom of the shallow lake, while taxiing for takeoff. A factor contributing to the accident was the gusty wind condition. ## 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 - weather condition - gusts (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - On ground/water encounter with terrain/water, taxi - to takeoff - terrain condition - water - terrain condition - other ## Analysis The solo commercial certificated pilot was water-taxiing the float-equipped airplane for takeoff to conduct a positioning flight under Title 14, CFR Part 91, when the accident occurred. The pilot reported that the winds were 30 knots, gusting to 40 knots, and that the wind picked up the left wing, forcing the right wing into the shallow water where it struck the bottom of the lake. He said the airplane righted itself, and he was able to taxi to the shore. In a written statement, the pilot reported that the damage to the airplane sustained during the accident was to the right wingtip, and one-fifth of the right wing. ## Factual narrative The solo commercial certificated pilot was water-taxiing the float-equipped airplane for takeoff to conduct a positioning flight under Title 14, CFR Part 91, when the accident occurred. The pilot reported that the winds were 30 knots, gusting to 40 knots, and that the wind picked up the left wing, forcing the right wing into the shallow water where it struck the bottom of the lake. He said the airplane righted itself, and he was able to taxi to the shore. In a written statement, the pilot reported that the damage to the airplane sustained during the accident was to the right wingtip, and one-fifth of the right wing. ## Aircraft - Registration: [N4773U](https://openairdocs.org/aircraft/N4773U), registered now, S/N U20605094, built 1979 (OpenAirDocs) - Reported make and model: Cessna U206G - Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U20605094 - Airframe hours: 6913 - Engines: Continental IO-520-F 300 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: Branch River Air, doing business as Branch River Air - Registered owner: Hartley, Inc. - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: 100 hour, July 1, 2007 - Departed: Iliamna, AK - Destination: PAKN, King Salmon, AK - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 44; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review June 1, 2006; seat: left; flight hours: 3,029 total, 1,549 in this make and model, 2,938 as pilot in command, 317 in the last 90 days, 135 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 30 knots, gusting 40 - Visibility: 10 statute miles - Lowest ceiling: 800 ft overcast ## 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 20070818021349A](https://openairdocs.org/incident/20070818021349A), Aug 18, 2007: Cessna U206G, King Salmon, AK, Substantial damage. (-23) The pilot in command (PIC) was taxiing N4773U downwind for departure from crosswind lake, AK. According to the pic's insurance company and NTSB reports,… ## Other investigations on N4773U (1) 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 ANC08CA110](https://openairdocs.org/ntsb/ANC08CA110), Aug 20, 2008: Cessna U206G (N4773U), Igiugig, AK, substantial damage. Probable cause: The pilot's misjudged speed and distance during takeoff, which resulted in the float-equipped airplane colliding with a bank. 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.