# NTSB investigations: Air Tractor AT-401B

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 CEN23LA241](https://openairdocs.org/ntsb/CEN23LA241.md): Air Tractor AT-401B · Holyoke, CO · Accident · No injuries · Class 4 · Limited · Final report · Jun 15, 2023 · N6106U · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll.
- [NTSB CEN21LA393](https://openairdocs.org/ntsb/CEN21LA393.md): Air Tractor AT-401B · Storm Lake, IA · Accident · No injuries · Class 4 · Limited · Final report · Sep 1, 2021 · N5081W · Substantial damage
  > The pilot’s failure to maintain adequate airspeed during a landing approach with a tailwind that resulted in a landing overrun and impact with terrain.
- [NTSB CEN14CA427](https://openairdocs.org/ntsb/CEN14CA427.md): Air Tractor AT 401B · Cimarron, KS · Accident · Serious injuries · Data collection · Final report · Aug 13, 2014 · N9071Z · Substantial damage
  > The pilot's failure to maintain clearance from the antenna guy wire during an aerial application pass.
- [NTSB CEN14LA376](https://openairdocs.org/ntsb/CEN14LA376.md): Air Tractor AT 401B · Ellis, KS · Accident · 1 fatal · Limited investigation · Final report · Jul 18, 2014 · N4223F · Substantial damage
  > The noninstrument-rated pilot’s inadequate preflight weather planning and subsequent inadvertent encounter with instrument meteorological conditions, which resulted in spatial disorientation and the loss of airplane control. Contributing to the accident was…
- [NTSB CEN09LA503](https://openairdocs.org/ntsb/CEN09LA503.md): Air Tractor AT401 · Waterloo, IA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2009 · N60747 · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ATL04LA173](https://openairdocs.org/ntsb/ATL04LA173.md): Air Tractor AT-401B · Bainbridge, GA · Accident · 1 fatal · Limited investigation · Final report · Sep 4, 2004 · N3047A · Substantial damage
  > The pilot's failure to maintain adequate airspeed during an abrupt maneuver which resulted in a stall and collision with the ground.
- [NTSB ATL03LA122](https://openairdocs.org/ntsb/ATL03LA122.md): Air Tractor AT401B · Girard, GA · Accident · No injuries · Limited investigation · Final report · Jul 30, 2003 · N61227 · Substantial damage
  > A loss of engine power due to the failure of the internal supercharger blower seals.
- [NTSB CHI02LA206](https://openairdocs.org/ntsb/CHI02LA206.md): Air Tractor AT-401B · Pratt, KS · Accident · No injuries · Limited investigation · Final report · Jul 22, 2002 · N60747 · Substantial damage
  > The pilot's failure to maintain terrain clearance. A factor was low altitude flight.
- [NTSB FTW00LA162](https://openairdocs.org/ntsb/FTW00LA162.md): Air Tractor AT-401B · Thibodaux, LA · Accident · Serious injuries · Limited investigation · Final report · Jun 1, 2000 · N5028Q · Substantial damage
  > The pilot's failure to maintain clearance with the power lines while maneuvering during an aerial application flight. A factor was the sunglare on the windscreen.
- [NTSB ATL00LA046](https://openairdocs.org/ntsb/ATL00LA046.md): Air Tractor AT-401-B · Lawrenceburg, TN · Accident · No injuries · Limited investigation · Final report · Apr 22, 2000 · N6096P · Substantial damage
  > The loss of engine power due to a stuck exhaust valve that resulted in the collision with a tree while maneuvering for the forced landing.
- [NTSB CHI99LA268](https://openairdocs.org/ntsb/CHI99LA268.md): Air Tractor AT-401B · Edelstein, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 1999 · N61775 · Substantial damage
  > an inadequate fuel supply which resulted in fuel exhaustion. Factors associated with the accident were the low altitude at which the power loss occurred and the corn crop the airplane contacted.
- [NTSB CHI99LA258](https://openairdocs.org/ntsb/CHI99LA258.md): Air Tractor 401B · Mccanna, ND · Accident · Serious injuries · Limited investigation · Final report · Jul 24, 1999 · N6006A · Substantial damage
  > the inadvertent stall by the pilot.

## 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 ('0390207'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0390207

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