# Fatal NTSB investigations: Air Tractor AT-401

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 FTW00LA212](https://openairdocs.org/ntsb/FTW00LA212.md): Air Tractor AT-401 · Panhandle, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 18, 2000 · N6055W · Destroyed
  > The pilot's failure to maintain airspeed, which resulted in a stall.
- [NTSB FTW99FA004](https://openairdocs.org/ntsb/FTW99FA004.md): Air Tractor AT-401 · Newellton, LA · Accident · 1 fatal · Field investigation · Final report · Oct 8, 1998 · N4531M · Substantial damage
  > The pilot's failure to maintain aircraft control during an inadvertent entry into adverse weather conditions. A related factor was the fog.
- [NTSB FTW96FA228](https://openairdocs.org/ntsb/FTW96FA228.md): Air Tractor AT-401 · Lake Providence, LA · Accident · 1 fatal · Field investigation · Final report · May 28, 1996 · N1549D · Destroyed
  > failure of the pilot to maintain sufficient airspeed, while maneuvering (turning), which resulted in an inadvertent stall and collision with the terrain. The high gusty wind condition was a related factor.
- [NTSB LAX90DVA07](https://openairdocs.org/ntsb/LAX90DVA07.md): Air Tractor AT-401 · San Joaquin, CA · Accident · 1 fatal · Final report · Jul 26, 1990 · N7315S · Substantial damage
  > The failure of the no. 4 cylinder head.

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0390204', '0390209'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&model=0390204

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