# NTSB investigations: Aeronca 11AC: Loss of control on ground

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB CEN25LA403](https://openairdocs.org/ntsb/CEN25LA403.md): Aeronca 11AC · Longmont, CO · Accident · No injuries · Class 4 · Limited · Final report · Sep 29, 2025 · N86326 · Substantial damage
  > The 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 ERA24LA238](https://openairdocs.org/ntsb/ERA24LA238.md): Aeronca 11AC · Geneseo, NY · Accident · No injuries · Class 4 · Limited · Final report · Jun 1, 2024 · N9418E · Substantial damage
  > The pilot’s failure to maintain directional control during the takeoff roll resulting in a runway excursion, and subsequent nose over.
- [NTSB CEN21LA275](https://openairdocs.org/ntsb/CEN21LA275.md): Aeronca 11AC · Baltimore, OH · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 16, 2021 · N85930 · Substantial damage
  > The pilot’s loss of directional control during landing.
- [NTSB CEN21LA037](https://openairdocs.org/ntsb/CEN21LA037.md): Aeronca 11AC · Wabash, IN · Accident · No injuries · Class 4 · Limited · Final report · Oct 28, 2020 · N9171E · Substantial damage
  > The pilot’s failure to properly secure the airplane before beginning the engine start sequence.
- [NTSB WPR20CA058](https://openairdocs.org/ntsb/WPR20CA058.md): Aeronca 11AC · San Diego, CA · Accident · No injuries · Data collection · Final report · Nov 25, 2019 · N9510E · Substantial damage
  > The 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 ERA17LA262](https://openairdocs.org/ntsb/ERA17LA262.md): Aeronca 11BC · Gilbert, SC · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2017 · N3154E · Substantial damage
  > The pilot's failure to maintain directional control during landing, which resulted in a runway excursion.
- [NTSB GAA17CA043](https://openairdocs.org/ntsb/GAA17CA043.md): Aeronca 11AC · Winter Haven, FL · Accident · No injuries · Data collection · Final report · Oct 22, 2016 · N9410E · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll in gusty crosswind conditions, which resulted in a runway excursion.
- [NTSB GAA16CA410](https://openairdocs.org/ntsb/GAA16CA410.md): Aeronca 11AC · Gig Harbor, WA · Accident · No injuries · Data collection · Final report · Jul 26, 2016 · N9791E · Substantial damage
  > The pilot's failure to maintain directional control during landing, and subsequent wing tip strike, which resulted in substantial damage to the rear spar.
- [NTSB GAA16CA257](https://openairdocs.org/ntsb/GAA16CA257.md): Aeronca 11AC · Vinton, IA · Accident · No injuries · Data collection · Final report · May 19, 2016 · N85871 · Substantial damage
  > The 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 CEN14LA387](https://openairdocs.org/ntsb/CEN14LA387.md): Aeronca 11AC · Flushing, MI · Accident · Minor injuries · Limited investigation · Final report · Jul 22, 2014 · N4453P · Substantial damage
  > The 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 WPR14CA229](https://openairdocs.org/ntsb/WPR14CA229.md): Aeronca 11AC · Tacoma, WA · Accident · No injuries · Data collection · Final report · Jun 4, 2014 · N9791E · Substantial damage
  > The 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 ERA11CA163](https://openairdocs.org/ntsb/ERA11CA163.md): Aeronca 11AC · Randolph, NY · Accident · No injuries · Data collection · Final report · Jul 20, 2010 · N9120E · Substantial damage
  > The 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 CEN09CA609](https://openairdocs.org/ntsb/CEN09CA609.md): Aeronca 11AC · Augusta, KS · Accident · No injuries · Data collection · Final report · Sep 26, 2009 · N9204E · Substantial damage
  > The pilot's failure to maintain directional control while landing with a quartering tailwind.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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
```

This list as a web page: https://openairdocs.org/ntsb-events/230/sequence?model=0191102

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