# NTSB investigations: Air Tractor AT-301, WI

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 CEN11FA562](https://openairdocs.org/ntsb/CEN11FA562.md): Air Tractor AT-301 · Nekoosa, WI · Accident · No injuries · Field investigation · Final report · Aug 4, 2011 · N4345S · Substantial damage
  > A total loss of engine power during initial climb for undetermined reasons.
- [NTSB CEN09LA602](https://openairdocs.org/ntsb/CEN09LA602.md): Air Tractor AT-301A · New Miner, WI · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 2009 · N3651R · Substantial damage
  > A total loss of engine power due to the fatigue failure of the engine torsion shaft. Contributing to the accident was the chrome plating of the shaft by an undetermined maintenance/overhaul facility.
- [NTSB CHI89DEP10](https://openairdocs.org/ntsb/CHI89DEP10.md): Air Tractor AT-301 · Plainfield, WI · Accident · 1 fatal · Final report · Aug 1, 1989 · N5044S · Destroyed
  > Failure of the pilot-in-command to maintain control of the aircraft while conducting aerial application maneuvers in close proximity to the terrain.

## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0390103', '0390105'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0390103&state=WI

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