# NTSB investigations: Air Tractor AT-301, 1990

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 FTW90DPG08](https://openairdocs.org/ntsb/FTW90DPG08.md): Air Tractor AT-301 · Corning, AR · Accident · Serious injuries · Final report · Aug 14, 1990 · N4433S · Substantial damage
  > Blockage of the carburetor Air intake by a collapsed Air induction hose due to improper maintenance by an unknown party.
- [NTSB FTW90DPG04](https://openairdocs.org/ntsb/FTW90DPG04.md): Air Tractor 301A · Foreman, AR · Accident · No injuries · Final report · Jul 30, 1990 · N31631 · Destroyed
  > The pilot's inadvertent stall/mush.
- [NTSB FTW90DRG04](https://openairdocs.org/ntsb/FTW90DRG04.md): Air Tractor AT-301 · Mission, TX · Accident · No injuries · Final report · Jul 2, 1990 · N3653W · Substantial damage
  > The pilot's failure to maintain proper clearance above the crops he was spraying. A factor was the tree induced mechanical turbulence encountered during the descending turn.
- [NTSB MKC90LA128](https://openairdocs.org/ntsb/MKC90LA128.md): Air Tractor AT-301 · Ulysses, KS · Accident · No injuries · Limited investigation · Final report · Jun 15, 1990 · N3650Z · Substantial damage
  > Failure of the powerplant cylinder and stall/mush encountered by the pilot in command.
- [NTSB MIA90LA083](https://openairdocs.org/ntsb/MIA90LA083.md): Air Tractor AT-301 · Rolling Fork, MS · Accident · No injuries · Limited investigation · Final report · Mar 6, 1990 · N23509 · Substantial damage
  > The in-flight separation of the left aileron due to improper maintenance procedures and an inadequate aircraft preflight.

## 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 year(c."eventDate") = 1990
  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&year=1990

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