# NTSB investigations: Air Tractor AT-401, LA

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 CEN22LA157](https://openairdocs.org/ntsb/CEN22LA157.md): Air Tractor AT-401 · Rayville, LA · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 26, 2022 · N9192E · Substantial damage
  > A loss of engine power for a reason that could not be determined based on available information.
- [NTSB CEN14LA450](https://openairdocs.org/ntsb/CEN14LA450.md): Air Tractor AT-401 · Natchez, LA · Accident · No injuries · Limited investigation · Final report · Aug 24, 2014 · N91968 · Destroyed
  > The loss of power due to the failure of the No. 2 exhaust valve and rocker boss during takeoff.
- [NTSB DFW07LA138](https://openairdocs.org/ntsb/DFW07LA138.md): Air Tractor AT-401 · Oak Grove, LA · Accident · No injuries · Limited investigation · Final report · Jun 6, 2007 · N92PK · Substantial damage
  > A complete loss of power due to failure of the impeller drive gear train and displacement of the blower spring drive mechanism, which resulted in seizure of the propeller shaft/crankshaft. Also causal was the failure of the phenolic separator bracket of the…
- [NTSB FTW04LA179](https://openairdocs.org/ntsb/FTW04LA179.md): Air Tractor AT-401 · Winnsboro, LA · Accident · No injuries · Limited investigation · Final report · Jul 10, 2004 · N10061 · Substantial damage
  > The pilot's mismanagement of fuel resulting in fuel starvation. A contributing factor was the ditch.
- [NTSB FTW01LA178](https://openairdocs.org/ntsb/FTW01LA178.md): Air Tractor AT-401 · Grand Coteau, LA · Accident · No injuries · Limited investigation · Final report · Aug 9, 2001 · N10140 · Substantial damage
  > the loss of engine power while maneuvering, which resulted from a fractured #4 cylinder head at the exhaust valve rocker arm boss. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW00LA074](https://openairdocs.org/ntsb/FTW00LA074.md): Air Tractor AT-401 · Rayville, LA · Accident · No injuries · Limited investigation · Final report · Jan 25, 2000 · N91968 · Substantial damage
  > The loss of engine power due to a crack in the #6 cylinder. A factor was the lack of suitable terrain for the forced landing.
- [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 FTW94LA200](https://openairdocs.org/ntsb/FTW94LA200.md): Air Tractor AT-401 · Pioneer, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 1994 · N10112 · Substantial damage
  > Fuel exhaustion due to the pilot's failure to refuel. A factor was a lack of suitable terrain for the forced landing.

## 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" = 'LA' 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 ('0390204', '0390209'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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