# NTSB ERA24LA238: Aeronca 11AC, N9418E, Geneseo, NY, June 1, 2024 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: June 1, 2024, 14:30 local (18:30 UTC) - Place: Geneseo, NY - Coordinates: 42.803835, -77.84245 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.8038&lon=-77.8424&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: 1 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): 194362 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA24LA238 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/194362/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=194362 - Page: https://openairdocs.org/ntsb/ERA24LA238 ## Probable cause The pilot’s failure to maintain directional control during the takeoff roll resulting in a runway excursion, and subsequent nose over. ## 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: [Aeronca 11AC, 14 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=0191102), [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: [Aeronca 11AC, 13 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=0191102), [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. - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Aeronca 11AC, 13 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=0191102), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Aeronca 11AC, 13 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=0191102), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Aeronca 11AC, 16 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=0191102), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Takeoff: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Aeronca 11AC, 7 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=0191102), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot had previously performed three uneventful landings and elected to depart for a final landing. The pilot initiated the takeoff roll from but started to lose directional control, drifting from one side of the runway to the other. When the left main tire was in tall vegetation adjacent to the runway he decided to continue the takeoff but the airplane veered more to the left and entered taller vegetation. While slowing the airplane nosed over, and both of the right wing’s lift struts were substantially damaged. The pilot reported, and a postaccident examination of the airplane confirmed, that there were no preimpact mechanical malfunctions or failures of the airplane that would have precluded normal operation. ## Aircraft - Registration: [N9418E](https://openairdocs.org/aircraft/N9418E), registered now, S/N 11AC-1055, built 1946 (OpenAirDocs) - Reported make and model: AERONCA 11AC (NO SERIES EXISTS) - Registry model: [Aeronca 11AC](https://openairdocs.org/model/aeronca-11ac) (registry code 0191102) (OpenAirDocs) - Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 11AC-1055 - Year built: 1946 - Airframe hours: 2309 - Engines: Continental A-665-8-F 65 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, December 17, 2023, 4 hours before - Airport: D52, Geneseo Airport, runway 5, 4,695 × 90 ft, grass/turf - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 77; injuries: none; private; airplane ratings: single-engine land; medical: basicmed; last flight review September 22, 2023; seat: left; restraint: 4-point; flight hours: 230 total, 38 in this make and model, 166 as pilot in command, 5 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 45 °F - Altimeter: 30.14 inHg - Turbulence: Unknown - Observed at: KDSV, 15 nm away - METAR: METAR KDSV 011854Z AUTO VRB05KT 10SM CLR 28/07 A3014 RMK AO2 SLP213 T02780067= ## 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 20240601010289A](https://openairdocs.org/incident/20240601010289A), Jun 1, 2024: Aeronca 11AC, Geneseo, NY, Substantial damage. On June 1, 2024, at approximately 1515 EDT, an Aeronca 11AC, experienced a runway excursion during takeoff. Weather conditions-no factor-vmc, winds 6 knot… ## Docket (6 files) The files NTSB released with the investigation on October 31, 2024, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=194362. 13.0 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 9.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17797513&FileExtension=pdf&FileName=6120%20Recd%207%2016%202024_Redacted-Rel.pdf - Pilot initial statement (item 2, PDF, 1 page, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17797334&FileExtension=pdf&FileName=Pilot%20Initial%20Statement-Rel.pdf - Weather reports and records (item 3, PDF, 2 pages, 32 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17797523&FileExtension=pdf&FileName=Wx%20Reports%20and%20Records-Rel.pdf - FAA inspector statement (item 4, PDF, 3 pages, 100 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17796954&FileExtension=pdf&FileName=FAA%20Inspector%20Statemnet-Rel.pdf - Investigative photographs (item 5, PDF, 4 pages, 916 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17798463&FileExtension=pdf&FileName=Investigative%20Photographs-Rel.pdf - Release of aircraft wreckage, NTSB form 6120.15 (item 6, PDF, 1 page, 2.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17804155&FileExtension=pdf&FileName=Fully%20Exctd%20Wreckage%20Release%20Form_Redacted-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.