# NTSB ERA26LA280: Waco ASO, N119Y, Hamilton, OH, July 24, 2026 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: July 24, 2026, 11:40 local (15:40 UTC) - Place: Hamilton, OH - Coordinates: 39.363854, -84.52306 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.3639&lon=-84.5231&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report September 11, 2026 - 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): 203461 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA26LA280 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/203461/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=203461 - Page: https://openairdocs.org/ntsb/ERA26LA280 ## Probable cause The separation of the right main landing gear axle, which resulted in a loss of control during the landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: main gear strut/axle/truck](https://openairdocs.org/ntsb-findings/01023213): Aircraft › Aircraft systems · Failure (probable cause); cases with it: [Waco ASO, 1 case](https://openairdocs.org/ntsb-findings/01023213/cases.md?model=9601202), [All aircraft, 86 cases](https://openairdocs.org/ntsb-findings/01023213/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Waco ASO, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=9601202), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [Waco ASO, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=9601202), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093); cases with it: [Waco ASO, 1 case](https://openairdocs.org/ntsb-events/093/sequence.md?model=9601202), [All aircraft, 319 cases](https://openairdocs.org/ntsb-events/093/sequence.md) ## Analysis The pilot reported that after touching down, smoothly on centerline, the airplane veered right. He attempted to apply corrective control inputs which were not successful. The airplane then began to slide, which resulted in the left main wheel and subsequently the right main wheel separating from the landing gear. The airplane continued to slide on the main landing gear struts, with the lower left wing dragging on the runway, until the airplane came to stop on the edge of the runway nearly, and oriented nearly perpendicular to it. This resulted in substantial damage to the lower left wing and aileron. Postaccident photographs showed a rubber witness mark on the right main landing gear strut and fractures of both the main landing gear wheel axles. Given this information, it is likely that during the touchdown sequence the right main landing gear wheel axle began to separate, which resulted in the right main wheel coming into contact with the right main landing gear strut. The contact with the right main landing gear strut likely resulted in the right uncorrectable motion the pilot reported and subsequent sideload and separation of both main landing gear. ## Aircraft - Registration: [N119Y](https://openairdocs.org/aircraft/N119Y), registered now, S/N 3220, built 1930 (OpenAirDocs) - Reported make and model: WACO ASO - Registry model: [Waco ASO](https://openairdocs.org/model/waco-aso) (registry code 9601202) (OpenAirDocs) - Registry engine: [Jacobs L-4MB](https://openairdocs.org/engine/jacobs-l-4mb) (registry code 35030, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 3220 - Year built: 1930 - Engines: JACOBS R755 9 245 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 21, 2026, 12 hours before - Departed: HAO, Hamilton, OH - Airport: HAO, Butler County Rgnl/Hogan Fld, runway 30, 5,500 × 100 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; injuries: none; airline transport, flight engineer, private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: basicmed, with waivers/limitations; last flight review July 18, 2026; seat: rear; restraint: 4-point; flight hours: 24,000 total, 300 in this make and model, 16,000 as pilot in command, 15 in the last 90 days, 4 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 80° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 57 °F - Altimeter: 30.15 inHg - Observed at: HAO - METAR: METAR KHAO 241453Z AUTO 08006KT 10SM CLR 22/14 A3015 RMK AO2 SLPNO T02220144 ## 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 20260724010089A](https://openairdocs.org/incident/20260724010089A), Jul 24, 2026: Waco ASO, Hamilton, OH, Substantial damage. On July 24, 2026, a Waco Aso, registration [privacy data omitted], departed khao (Butler county regional airport) for a local flight with one pilot and three… ## Docket (2 files) The files NTSB released with the investigation on September 11, 2026, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=203461. 2.7 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 10 pages, 1.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20787633&FileExtension=pdf&FileName=6120.1%20Completed_Redacted-Rel.pdf - Photos (item 2, PDF, 7 pages, 969 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20788541&FileExtension=pdf&FileName=Photo%20Array%20ERA26LA280-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.