# NTSB investigations: Pratt & Whitney Canada PT6A-34AG: Low altitude operation/event

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 CEN25LA274](https://openairdocs.org/ntsb/CEN25LA274.md): Air Tractor AT502 · Hastings, NE · Accident · No injuries · Class 4 · Limited · Final report · Jul 22, 2025 · N502KB · Substantial damage
  > The pilot’s failure to maintain clearance from powerlines while maneuvering at low altitude.
- [NTSB GAA25WA281](https://openairdocs.org/ntsb/GAA25WA281.md): Air Tractor AT-504 · Gizan, Saudi Arabia · Accident · Serious injuries · Class 4 · Foreign · Oct 9, 2024 · N149SH · Destroyed
- [NTSB CEN23FA412](https://openairdocs.org/ntsb/CEN23FA412.md): Air Tractor AT-502B · New Rockford, ND · Accident · 1 fatal · Class 3 · Field · Final report · Sep 19, 2023 · N502NB · Substantial damage
  > The pilot’s failure to maintain clearance from overhead power lines during an aerial application flight. Contributing to the accident was the pilot’s decision to fly under the power lines with a small area of clearance available for the airplane.
- [NTSB ERA20LA217](https://openairdocs.org/ntsb/ERA20LA217.md): Air Tractor AT502 · Atmore, AL · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 16, 2020 · N879JA · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, which resulted in an aerodynamic stall, spin, and loss of control.
- [NTSB GAA19CA502](https://openairdocs.org/ntsb/GAA19CA502.md): Air Tractor AT502 · Onida, SD · Accident · No injuries · Data collection · Final report · Aug 16, 2019 · N500KA · Substantial damage
  > The pilot's failure to maintain clearance from power wires during agricultural application operations.
- [NTSB GAA19CA480](https://openairdocs.org/ntsb/GAA19CA480.md): Air Tractor AT502 · Waco, NE · Accident · No injuries · Data collection · Final report · Aug 4, 2019 · N730JD · Substantial damage
  > The pilot's failure to maintain clearance from wires during an agricultural application flight.
- [NTSB CEN18FA232](https://openairdocs.org/ntsb/CEN18FA232.md): Air Tractor AT 502B · Enid, OK · Accident · 1 fatal · Class 2 · Field · Final report · Jun 19, 2018 · N2063B · Destroyed
  > The pilot's failure to see and avoid a known obstacle (communications tower) during agricultural spraying operations.
- [NTSB CEN09CA194](https://openairdocs.org/ntsb/CEN09CA194.md): Air Tractor AT-502B · Harrold, SD · Accident · Minor injuries · Data collection · Final report · Mar 6, 2009 · N648LA · Substantial damage
  > The pilot's failure to maintain clearance from the power lines during his turn to reverse course due to weather. Contributing to the accident was the reduced visibility at the time of the accident.

## 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.engine_model_code IN ('52251')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '220'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/220/cases?engine=52251

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