# NTSB investigations: Champion 7AC: 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 ERA19TA182](https://openairdocs.org/ntsb/ERA19TA182.md): Aeronca 7AC · Concord, GA · Accident · No injuries · Class 3 · Final report · May 27, 2019 · N1797E · Substantial damage
  > The pilot's inability to maintain directional control during landing for reasons that could not be determined because postaccident examination of the airplane brake assemblies revealed no anomalies that would have caused the right brake to lock, which…
- [NTSB GAA17CA471](https://openairdocs.org/ntsb/GAA17CA471.md): Champion 7ACA · Nampa, ID · Accident · No injuries · Data collection · Final report · Aug 5, 2017 · N1227G · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll and the flight instructor’s use of excessive braking, which led to a nose-over.
- [NTSB ERA16CA178](https://openairdocs.org/ntsb/ERA16CA178.md): Champion 7AC · Jasper, AL · Accident · No injuries · Data collection · Final report · Apr 23, 2016 · N82463 · Substantial damage
  > The pilot's inadequate compensation for the wind which resulted in a loss of directional control at touchdown and collapse of the landing gear.
- [NTSB ERA09CA386](https://openairdocs.org/ntsb/ERA09CA386.md): Champion 7AC · Westminster, MD · Accident · No injuries · Data collection · Final report · Jul 3, 2009 · N1397E · Substantial damage
  > The pilot's failure to properly set the throttle for start.

## 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 ('21101MA')
    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=21101MA

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