# NTSB GAA17CA432: Cessna TU206B, N10AR, Sandy, OR, July 23, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 23, 2017, 12:20 local (19:20 UTC) - Place: Sandy, OR - Coordinates: 45.430557, -122.241943 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.4306&lon=-122.2419&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report February 21, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95644 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA432 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95644/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95644 - Page: https://openairdocs.org/ntsb/GAA17CA432 ## Probable cause The pilot’s improper bank control during landing in gusting wind conditions. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: lateral/bank control](https://openairdocs.org/ntsb-findings/01062023): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna TU206B, 1 case](https://openairdocs.org/ntsb-findings/01062023/cases.md?model=2073324), [All aircraft, 391 cases](https://openairdocs.org/ntsb-findings/01062023/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna TU206B, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2073324), [All aircraft, 9,308 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Cessna TU206B, 1 case](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=2073324), [All aircraft, 1,201 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Cessna TU206B, 1 case](https://openairdocs.org/ntsb-events/240/sequence.md?model=2073324), [All aircraft, 5,010 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Cessna TU206B, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=2073324), [All aircraft, 1,789 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna TU206B, 3 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2073324), [All aircraft, 10,152 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis According to the pilot, he checked the wind sock at the airpark and made left traffic for a landing on the turf runway. As the airplane touched down, it encountered a wind gust from the left. The right wing struck the ground, followed by the left wing and the propeller. The nose landing gear collapsed, and the airplane came to rest upright on the main landing gear and the fuselage. The airplane sustained substantial damage to the right- and left-wing spars. The pilot reported the wind was from 270° at 7 knots. The nearest METAR, 10 miles northwest of the airpark, reported that, about the time of the accident, the wind was variable at 3 knots, the ceiling was overcast at 2,100 ft, and the visibility was greater than 10 statute miles. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative According to the pilot, he checked the wind sock at the airpark and made left traffic for a landing on the turf surface of runway 25. As the airplane touched down, it encountered a gust of wind from the left. The right-wing struck the ground, followed by the left-wing and the propeller striking the ground. The nose landing gear collapsed, and the airplane came to rest upright, on the main landing gear and the fuselage. The airplane sustained substantial damage to the right and left-wing spars. The pilot reported the wind was from 270 degrees at 7 knots, unknown if it was gusting. The nearest METAR, 10 miles northwest of the airpark, reported that about the time of the accident the wind was variable at 3 knots, the ceiling was overcast at 2,100 feet and the visibility was greater than 10 statute miles. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N10AR](https://openairdocs.org/aircraft/N10AR), registered now, S/N U206-0738, built 1966 (OpenAirDocs) - Reported make and model: CESSNA TU206B (B) - Registry model: [Cessna TU206B](https://openairdocs.org/model/cessna-tu206b) (registry code 2073324) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U206-0738 - Year built: 1966 - Airframe hours: 3190.13 - Engines: Continental TS10520C 285 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: K Airmotive LLC - Registered owner: K Airmotive LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 18, 2016 - Departed: 0629, SANDY RIVER AIR, OR - Destination: 0629, Sandy, OR - Airport: OG29, Mc Kinnon Airpark, runway 25, 3,000 × 50 ft, grass/turf - Equipment: Angle of attack indicator, Electronic flight bag or handheld device, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 77; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review August 20, 2015; seat: left; restraint: lap only; flight hours: 2,360 total, 630 in this make and model, 2,360 as pilot in command, 7 in the last 90 days, 4.4 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 3 knots - Visibility: 10 statute miles - Lowest ceiling: 2,100 ft overcast - Temperature: 72 °F, dew point 61 °F - Altimeter: 30.03 inHg - Observed at: KTTD, 10 nm away ## 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 20170723015579A](https://openairdocs.org/incident/20170723015579A), Jul 23, 2017: Cessna TU206B, Sandy, OR, Substantial damage. Departed independence Oregon for Sandy Oregon. Departed Sandy Oregon to Mc Kinnon Airpark. Flew a circuit around airport, checked windsock and looked for… ## Docket (2 files) The files NTSB released with the investigation on January 10, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95644. 3.6 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459349&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (Courtesy of FAA) (item 2, .PDF, 1 photo, 256 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459350&FileExtension=.PDF&FileName=Photo%20(Courtesy%20of%20FAA)-Master.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.