# NTSB GAA17CA508: Cessna 182, N2465G, North Platte, NE, August 22, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 22, 2017, 14:30 local (19:30 UTC) - Place: North Platte, NE - Coordinates: 41.12611, -100.683609 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.1261&lon=-100.6836&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report April 23, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95884 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA508 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95884/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95884 - Page: https://openairdocs.org/ntsb/GAA17CA508 ## Probable cause The pilot’s failure to maintain directional control during the landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 182B, 8 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072706), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna 182B, 4 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072706), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna 182B, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072706), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 182B, 9 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072706), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 182B, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072706), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis According to the pilot in the high-performance, tailwheel-equipped airplane, he accomplished a normal wheel landing on the asphalt runway in light-and-variable wind conditions. He reported that, during the landing roll, the tailwheel settled to the runway and began a "violent shimmy." The airplane exited the left side of the runway and ground looped to the left. The right wing and the elevator struck the ground. The pilot taxied the airplane to parking. The airplane sustained substantial damage to the right wing and the elevator. The pilot reported that, shortly after the accident, he retrieved a metal clamp from the airport, which he believed was on the runway during the time of the accident. The accident airplane was originally manufactured with tricycle landing gear and was converted to a tailwheel-equipped airplane. A Federal Aviation Administration aviation safety inspector examined the airplane's tailwheel assembly, including the tire and the wheel, for evidence that a clamp had gotten caught in the tailwheel assembly. He reported that there were no signs of any scarring to the wheel, tire, or steering assembly. There were no signs of tire damage from skidding, and the tailwheel's control cables were intact. He reported that "there [was] no visible sign of any sort [that] this tailwheel was operated any way other than what it is designed for, and there is not any physical sign it was ever not following the [inputs] from the pilot." ## Factual narrative According to the pilot in the high performance, tailwheel-equipped airplane, he accomplished a normal wheel landing, to the asphalt runway, in light and variable wind conditions. He reported that during the landing roll, the tailwheel settled to the runway and began a "violent shimmy". The airplane exited the left side of the runway and ground looped to the left. The right wing and the elevator struck the ground. The pilot taxied the airplane to parking. The airplane sustained substantial damage to the right-wing and the elevator. Shortly after the accident, the pilot retrieved a metal clamp from the airport, which he believed was on the runway during the time of the accident. The accident airplane was originally manufactured with tricycle landing gear and was converted to a tailwheel-equipped airplane. A Federal Aviation Administration, Aviation Safety Inspector examined the airplane's tailwheel assembly to include the tire and the wheel. The Inspector reported that he inspected the tailwheel for any signs of a clamp getting caught in the tailwheel assembly. He reported that there were no signs of any scarring to the wheel or the tire, or the steering assembly. There were no signs of tire damage from skidding and the control cables for the tailwheel were intact. He reported that, "there [was] no visible sign of any sort [that] this tailwheel was operated any way other than what it is designed for, and there is not any physical sign it was ever not following the [input's] from the pilot". ## Aircraft - Registration: [N2465G](https://openairdocs.org/aircraft/N2465G), registered now, S/N 51765, built 1959 (OpenAirDocs) - Reported make and model: CESSNA 182 (B) - Registry model: [Cessna 182B](https://openairdocs.org/model/cessna-182b) (registry code 2072706) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 51765 - Year built: 1959 - Airframe hours: 3172.87 - Engines: CONT MOTOR O-470 270 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 26, 2017 - Departed: LBF, North Platte, NE - Destination: LBF, North Platte, NE - Airport: LBF, Lee Bird Field, runway 30, 8,001 × 150 ft, concrete - Equipment: Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 72; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review May 7, 2017; seat: front; restraint: lap only; flight hours: 31,914 total, 840 in this make and model, 12.8 in the last 90 days, 4.6 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 77 °F, dew point 52 °F - Altimeter: 30.25 inHg - Observed at: KLBF, 1 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 20170822013579A](https://openairdocs.org/incident/20170822013579A), Aug 22, 2017: Cessna 182B, North Platte, NE, Substantial damage. The pilot executed a normal approach and landing on rwy 30 at North Platte Nebraska (lbf). After landing and during rollout, after the tailwheel touched down,… ## Other investigations on N2465G (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 SEA78FYK21](https://openairdocs.org/ntsb/SEA78FYK21), Sep 9, 1978: Cessna 182B (N2465G), Azalea, OR, substantial damage ## Docket (3 files) The files NTSB released with the investigation on March 27, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95884. 2.8 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 964 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461314&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - FAA Inspector's Statement (item 2, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461315&FileExtension=.PDF&FileName=FAA%20Inspector%27s%20Statement-Master.PDF - Photos (Courtesy of FAA) (item 3, .PDF, 2 photos, 1.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461316&FileExtension=.PDF&FileName=Photos%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.