# NTSB investigations: Pratt & Whitney Canada PT6A-67AG: 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 CEN23LA311](https://openairdocs.org/ntsb/CEN23LA311.md): Air Tractor AT-802 · Benson, MN · Accident · No injuries · Class 4 · Limited · Final report · Jul 14, 2023 · N22FK · Substantial damage
  > The pilot’s failure to adequately survey a field for obstructions prior to a low-level aerial application pass, which resulted in an impact with a powerline. Contributing to the accident was the degraded visibility due to the smoke in the area.
- [NTSB CEN21LA313](https://openairdocs.org/ntsb/CEN21LA313.md): Air Tractor AT802 · Newell, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2021 · N949TM · Substantial damage
  > The pilot’s failure to maintain adequate clearance from crops during an agricultural flight.
- [NTSB WPR20LA315](https://openairdocs.org/ntsb/WPR20LA315.md): Air Tractor AT-802A · Emmett, ID · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 23, 2020 · N836MM · Substantial damage
  > The pilot’s descent below surrounding terrain and his delayed decision to initiate a climb which resulted in impact with terrain. Contributing to the accident were terrain and lighting conditions that affected the pilot’s ability to accurately assess terrain…

## 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 ('52211')
    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=52211

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