NTSB investigations: Aeronca 11AC
22 cases on aircraft the registry lists as Aeronca 11AC, where the first occurrence was “Loss of control - on ground/water”. 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
| 1982 | 3 |
|---|---|
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 2 |
| 1990 | 1 |
| 1991 | 2 |
| 1992 | 1 |
| 1994 | 1 |
| 1995 | 1 |
| 1999 | 3 |
| 2000 | 1 |
| 2006 | 1 |
| 2007 | 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_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 260))
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_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 260))
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 LAX07CA161Accident · No injuriesData collectionFinal reportAeronca 11AC · Glendale, AZThe private pilot's unstabilized approach and failure to maintain directional control during the landing roll, which resulted in a ground loop. Also causal was the instructor's inadequate supervision and failure to take remedial action.NTSB DFW06CA200Accident · No injuriesData collectionFinal reportAeronca 11AC · Searcy, ARThe student pilot's inadequate compensation for the existing wind conditions and the flight instructor's delayed remedial action to maintain directional control. A contributing factor was the crosswind.NTSB NYC00LA264Accident · No injuriesLimited investigationFinal reportAeronca 11AC-991 · Gettysburg, PAThe pilot's failure to maintain control of the airplane after landing which resulted in the inadvertent ground loop.NTSB LAX00LA046Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Sedona, AZThe pilot's inadequate compensation for the crosswind conditions and subsequent failure to maintain directional control of the airplane.NTSB CHI99LA318Accident · No injuriesLimited investigationFinal reportAeronca 11BC · Watervliet, MIthe pilot not maintaining aircraft control during takeoff, and the pilot not correcting for the porpoise.NTSB IAD99LA055Accident · No injuriesLimited investigationFinal reportAeronca 11BC · Millbrook, NYwas the pilot's inadequate compensation for winds and his failure to maintain directional control.NTSB CHI95LA084Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Kenosha, WIthe student's failure to maintain directional control during the landing roll.NTSB MIA94LA180Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Lutz, FLThe certified flight instructor's improper supervision of the student pilot during a wheel landing resulting in an on ground loss of control (inadvertent ground loop). Contributing to the accident was the student pilot's improper use of flight controls and…NTSB NYC93LA009Accident · No injuriesLimited investigationFinal reportAeronca 11-AC · Columbus, OHThe pilot failed to maintain control of the airplane, resulting the airplane departing the runway and impacted with the VASI lights.NTSB LAX91LA201Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Madera, CAThat the pilot failed to properly recover from a bounced landing. Contributing to this accident was the pilot's lack of experience in the airplane.NTSB ATL91LA058Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Union Springs, ALThe pilot's failure to maintain directional control of the airplane during the landing roll, which resulted in an inadvertent ground swerve.NTSB ANC90FA052Accident · No injuriesField investigationFinal reportAeronca 11AC · Chugiak, AKFailure of the pilot to maintain directional control, which resulted in an inadvertent ground swerve. Factors related to the accident were: the crosswind and snow covered terrain beside the runway.NTSB CHI90LA058Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Chillicothe, OHImproper planning/decision by the student pilot, which resulted in a landing on a slick runway, and his failure to maintain directional control during the landing, which resulted in his inability to maintain runway alignment. Contributing factors were: the…NTSB LAX90LA003Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Penn Valley, CAFailure of the pilot to maintain directional control during the landing roll-out, which resulted in an inadvertent ground swerve. Uneven terrain beside the runway was a factor.NTSB MIA89LA047Accident · Minor injuriesLimited investigationFinal reportAeronca 11AC · Tampa, FLThe plt stated that he failed to maintain directional control during landing in a crosswind. He further stated that he aggravated the loss of control by over-application of the controls and adding full throttle which led to the aircraft departing the rwy and…NTSB BFO88LA074Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Gaithersburg, MDThe pilot reported that the local winds were varying from 340 degrees to 360 degrees at 12 knots gusting to 20 knots. The pilot stated that he lost directional control due to gusty winds while on landing roll. The aircraft contacted a VASI light and then a…NTSB LAX88LA092Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Lakeport, CADuring ldg rollout the acft veered off the rwy, went into a ditch & collided with terrain causing substantial damage. The surface winds were estimated at only 5 KTS. The plt acknowledged that the accident might have been prevented if he had been less…NTSB CHI87LA075Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Dodgeville, WIWhile taxiing after landing on runway 12, a tailwind was encountered. The acft spun around, slid backwards off the rwy, down a steep embankment and struck a large rock. The plt reported winds from 270 degrees at 12 knots gusting to 18 knots.NTSB ANC85LA161Accident · No injuriesLimited investigationFinal reportAeronca 11AC · Dillingham, AKThe pilot stated that approximately 200 ft into the rollout the right wing lifted into the air, veering the plane to the right losing directional control of the aircraft causing the aircraft to exit the runway into a gravel pit.NTSB NYC83IA040Incident · No injuriesIncident investigationFinal reportAeronca 11AC · Monticello, NYAs the flight made a three point landing in strong, gusting, left crosswinds, a gust of wind lifted the aircraft's left wing. Directional control was lost and the aircraft departed the right side of the runway. It came to rest at the bottom of a grassy slope…NTSB ANC82DA077Accident · No injuriesFinal reportAeronca 11AC · Soldotna, AKThe student pilot was practicing takeoffs and landings. He stated that during a landing, the aircraft ground looped to the left, went off the runway and went into soft dirt. When the soft dirt was encountered, the landing gear and propeller were damage.NTSB LAX82IA086Incident · Minor injuriesIncident investigationFinal reportAeronca 11AC · Weldon, CAPilot stated that while at cruise, the engine began running rough and a precautionary landing was executed. During the touchdown, the aircraft struck a bump disconnecting the steering springs. He then lost directional control, striking a tree and fence on the…