# NTSB ERA21LA314: Cessna 172S, N35585, Clarksville, TN, June 17, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: June 17, 2021, 18:00 local (23:00 UTC) - Place: Clarksville, TN - Coordinates: 36.622242, -87.414883 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=36.6222&lon=-87.4149&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Eastern Region Aviation - Parties: FAA FSDO - NTSB case key (mKey): 103614 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA21LA314 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103614/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103614 - Page: https://openairdocs.org/ntsb/ERA21LA314 ## Probable cause The flight instructor’s inadequate remedial action during takeoff, which resulted in a runway excursion. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained; cases with it: [Cessna 172S, 66 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072439), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot; cases with it: [Cessna 172S, 30 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=2072439), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna 172S, 77 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072439), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The instructor stated that this was the first flight for the student pilot. He and the student pilot were at the controls of the airplane during the takeoff roll when the airplane veered to the left. The flight instructor announced that he had control of the airplane, attempted to apply right rudder to correct the movement, however the airplane continued toward a ditch off the side of the runway. He decided to add full power to try and take off to avoid the ditch, but the airplane struck a runway light, which resulted in the left wingtip impacting the grass. The airplane settled back onto the ground, the nose gear separated, and it came to rest in a wings level nose low attitude. The airplane sustained substantial damage to both wings and the engine mount. The pilot reported that the airplane had no preimpact mechanical malfunctions or failures that would have precluded normal operation. ## Aircraft - Registration: [N35585](https://openairdocs.org/deregistered/N35585-2022-07-25), registration cancelled 2022-07-25, S/N 172S8873 (OpenAirDocs) - Reported make and model: CESSNA 172S - Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (registry code 2072439) (OpenAirDocs) - Category: Airplane - Serial number: 172S8873 - Year built: 2001 - Airframe hours: 9853 - Engines: Lycoming IO-360-L2A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Wings of Eagles - Registered owner: Louis Zamudio - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, May 10, 2021, 52 hours before - Airport: CKV, Outlaw Fld, runway 05/23, 4,004 × 100 ft, asphalt - Equipment: Stall warning system, ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; injuries: none; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review November 21, 2020; seat: right; flight hours: 753 total, 591 in this make and model, 724 as pilot in command, 169 in the last 90 days, 48 in the last 30 days, 3 in the last 24 hours - Student pilot; age 44; injuries: none; student; seat: left; flight hours: 0 total, 0 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 4 knots - Visibility: 10 statute miles - Lowest ceiling: 4,000 ft broken - Temperature: 88 °F, dew point 64 °F - Observed at: CKV - METAR: SA 17/06/2021 17:52-> METAR KCKV 171752Z AUTO VRB04KT 10SM FEW065 31/18 A3002 RMK AO2 SLP160 T03060178 10317 20200 58007 TSNO= ## 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 20210617010269A](https://openairdocs.org/incident/20210617010269A), Jun 17, 2021: Cessna 172S, Clarksville, TN, Substantial damage. During the take-off roll with the student on the controls, the aircraft reached a about 40 KTS when the aircraft veered sharply to the left. The student placed… ## Other investigations on N35585 (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 GAA19CA412](https://openairdocs.org/ntsb/GAA19CA412), Jul 14, 2019: Cessna 172 (N35585), Elkton, FL, substantial damage. Probable cause: The pilot under instruction's failure to follow the flight instructor’s directions and the flight instructor's delayed remedial action and subsequent exceedance of the airplane’s critical angle of… ## Docket (3 files) The files NTSB released with the investigation on May 4, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103614. 10.9 MB in all. - Operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 5.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12572565&FileExtension=pdf&FileName=NTSB%206120_N35585_CFI_Redacted-Rel.pdf - Pilot's statement (item 2, PDF, 2 pages, 628 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12572252&FileExtension=pdf&FileName=MOR%20Pilots%20Statements_Redacted-Rel.pdf - Investigative photographs (item 3, PDF, 6 pages, 5.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12572575&FileExtension=pdf&FileName=Investigative%20Photographs%20-%20ERA21LA314-Rel.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.