# NTSB GAA18CA485: Cessna 172, N707TM, Sallisaw, OK, August 4, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 4, 2018, 11:00 local (16:00 UTC) - Place: Sallisaw, OK - Coordinates: 35.438331, -94.803054 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=35.4383&lon=-94.8031&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: 1 uninjured - Status: Completed, report September 26, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 98058 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA485 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/98058/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=98058 - Page: https://openairdocs.org/ntsb/GAA18CA485 ## Probable cause The student pilot's loss of 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 · Student/instructed pilot (probable cause); cases with it: [Cessna 172H, 15 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072424), [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 172H, 5 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072424), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Object/animal/substance: airport structure](https://openairdocs.org/ntsb-findings/03022042): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Cessna 172H, 1 case](https://openairdocs.org/ntsb-findings/03022042/cases.md?model=2072424), [All aircraft, 50 cases](https://openairdocs.org/ntsb-findings/03022042/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: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [Cessna 172H, 3 cases](https://openairdocs.org/ntsb-events/400/sequence.md?model=2072424), [All aircraft, 1,127 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna 172H, 10 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072424), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 172H, 7 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072424), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 172H, 20 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072424), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis According to the student pilot, during a solo flight in the traffic pattern, the airplane encountered a wind gust from the left during the landing roll. The airplane exited the left side of the runway and collided with a drainage culvert located about 100 ft east of the runway. The airplane's ground speed at the time of the collision was about 15 mph. The student reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. The airplane sustained substantial damage to the right-wing spar. The METAR for the airport reported that, about the time of the accident, the wind was from 150° at 3 knots, and the skies were clear. No gusts were reported. ## Factual narrative According to the student pilot, during a solo-flight in the pattern, the airplane encountered a wind gust from the left during the landing roll on runway 17. The airplane exited the left side of the runway and collided with a drainage culvert located about 100ft east of the runway. The airplane's ground speed at the time of the collision was about 15 miles per hour. The airplane sustained substantial damage to the right wing spar. The METAR for the accident airport reported that about the time of the accident the wind was from 150° at 3kts, and the skies were clear. No gusts were reported. The student pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N707TM](https://openairdocs.org/deregistered/N707TM-2020-05-04), registration cancelled 2020-05-04, S/N 17255665, built 1966 (OpenAirDocs) - Reported make and model: Cessna 172 (H) - Registry model: [Cessna 172H](https://openairdocs.org/model/cessna-172h) (registry code 2072424) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17255665 - Year built: 1966 - Airframe hours: 2881 - Engines: Continental O-300 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Fast Mover Aviation Llc - Registered owner: Fast Mover Aviation Llc - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 31, 2018 - Departed: FSM, Fort Smith, AR - Destination: JSV, Sallisaw, OK - Airport: JSV, Sallisaw Muni, runway 17, 4,006 × 75 ft, asphalt - Equipment: Stall warning system, ADS-B, Electronic flight bag or handheld device, Onboard weather ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 39; injuries: none; student; medical: class 3; seat: left; restraint: lap only; toxicology performed; flight hours: 25 total, 25 in this make and model, 25 in the last 90 days, 12 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 91 °F, dew point 63 °F - Altimeter: 30.04 inHg - Observed at: KJSV ## 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 20180804009879A](https://openairdocs.org/incident/20180804009879A), Aug 4, 2018: Cessna 172H, Sallisaw, OK, Substantial damage. The student was conducting a solo flight at kjsv. During the fourth landing the student was on roll out when he lost control and went off the runway on the… ## Docket (2 files) The files NTSB released with the investigation on May 9, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=98058. 855 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 692 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472797&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (item 2, .PDF, 1 photo, 163 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472798&FileExtension=.PDF&FileName=Photo-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.