NTSB investigations: Aeronca 11AC
13 cases on aircraft the registry lists as Aeronca 11AC, where the sequence of events included Loss of control on ground. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 2009 | 1 |
|---|---|
| 2010 | 1 |
| 2014 | 2 |
| 2016 | 3 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
WHERE c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0191102')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s.\"tier2Number\" = '230' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\")))
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0191102')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '230' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB CEN25LA403Accident · No injuriesClass 4 · LimitedFinal reportAeronca 11AC · Longmont, COThe pilot’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion and the pilot’s improper landing flare which resulted in a hard landing.NTSB ERA24LA238Accident · No injuriesClass 4 · LimitedFinal reportAeronca 11AC · Geneseo, NYThe pilot’s failure to maintain directional control during the takeoff roll resulting in a runway excursion, and subsequent nose over.NTSB CEN21LA275Accident · Minor injuriesClass 4 · LimitedFinal reportAeronca 11AC · Baltimore, OHThe pilot’s loss of directional control during landing.NTSB CEN21LA037Accident · No injuriesClass 4 · LimitedFinal reportAeronca 11AC · Wabash, INThe pilot’s failure to properly secure the airplane before beginning the engine start sequence.NTSB WPR20CA058Accident · No injuriesData collectionFinal reportAeronca 11AC · San Diego, CAThe pilot's failure to maintain directional control during the landing roll with a quartering tailwind, which resulted in a collision with an airport sign and subsequent ground-loop.NTSB ERA17LA262Accident · No injuriesClass 3 · LimitedFinal reportAeronca 11BC · Gilbert, SCThe pilot's failure to maintain directional control during landing, which resulted in a runway excursion.NTSB GAA17CA043Accident · No injuriesData collectionFinal reportAeronca 11AC · Winter Haven, FLThe pilot's failure to maintain directional control during the landing roll in gusty crosswind conditions, which resulted in a runway excursion.NTSB GAA16CA410Accident · No injuriesData collectionFinal reportAeronca 11AC · Gig Harbor, WAThe pilot's failure to maintain directional control during landing, and subsequent wing tip strike, which resulted in substantial damage to the rear spar.NTSB GAA16CA257Accident · No injuriesData collectionFinal reportAeronca 11AC · Vinton, IAThe pilot's failure to maintain directional control during the landing roll in gusty crosswind conditions, which resulted in a runway excursion and ground loop.NTSB CEN14LA387Accident · Minor injuriesLimited investigationFinal reportAeronca 11AC · Flushing, MIThe pilot receiving instruction’s failure to maintain directional control during the takeoff roll. Contributing to the accident was the flight instructor not having access to brake controls, which limited his ability to regain directional control at slower…NTSB WPR14CA229Accident · No injuriesData collectionFinal reportAeronca 11AC · Tacoma, WAThe student pilot's improper application of rudder resulted in a loss of control during the landing roll and the flight instructor's inadequate oversight.NTSB ERA11CA163Accident · No injuriesData collectionFinal reportAeronca 11AC · Randolph, NYThe certified flight instructor's delayed response to the student pilot's loss of directional control during takeoff, which resulted in a runway excursion and collision with a building.NTSB CEN09CA609Accident · No injuriesData collectionFinal reportAeronca 11AC · Augusta, KSThe pilot's failure to maintain directional control while landing with a quartering tailwind.