# NTSB investigations: Pratt & Whitney Canada PT6A-34AG, IL

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 CEN25LA267](https://openairdocs.org/ntsb/CEN25LA267.md): Air Tractor AT-402B · Wyoming, IL · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 15, 2025 · N647RA · Substantial damage
  > The pilot’s failure to attain a positive climb rate due to airplane’s improper takeoff configuration.
- [NTSB CEN22LA312](https://openairdocs.org/ntsb/CEN22LA312.md): Air Tractor AT-502B · Decatur, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2022 · N5850R · Substantial damage
  > Fracture of the compressor turbine (CT) blades due to creep.
- [NTSB CEN15LA335](https://openairdocs.org/ntsb/CEN15LA335.md): Air Tractor AT 502B · Virden, IL · Accident · No injuries · Limited investigation · Final report · Aug 1, 2015 · N502LH · Substantial damage
  > The pilot’s failure to establish a proper airspeed during takeoff with the airplane near its maximum gross weight and with a quartering tailwind.
- [NTSB CEN14CA464](https://openairdocs.org/ntsb/CEN14CA464.md): Air Tractor AT 502B · Colusa, IL · Accident · No injuries · Data collection · Final report · Aug 27, 2014 · N369AB · Substantial damage
  > The pilot did not maintain control of the airplane during takeoff from a grass strip. Contributing was the airplane being loaded beyond its capability for the runway.

## 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" = 'IL' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52251'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52251&state=IL

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.