# NTSB investigations: Pratt & Whitney PT6A-34 series

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 WPR25LA250](https://openairdocs.org/ntsb/WPR25LA250.md): De Havilland DHC-6-300 · San Celmente, CA · Accident · No injuries · Class 3 · Limited · Preliminary report · Aug 11, 2025 · N344CS · Substantial damage
  > On August 11, 2025, at 1130 Pacific daylight time, a De Havilland DHC-6-300, N344CS, was substantially damaged when it was involved in an accident at San Clemente Island, California. The 2 pilots and 16 passengers were not injured. The airplane was operated…
- [NTSB CEN25LA297](https://openairdocs.org/ntsb/CEN25LA297.md): Ayres S2R · Akron, IA · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jul 28, 2025 · N524SL · Substantial damage
  > On July 28, 2025, about 1537 central daylight time, an Ayres Corporation S2R-T34 airplane, N524SL, sustained substantial damage when it was involved in an accident near Akron, Iowa. The pilot sustained serious injuries. The airplane was operated as a Title 14…
- [NTSB WPR24LA300](https://openairdocs.org/ntsb/WPR24LA300.md): Pacific Aerospace 750XL · Mulino, OR · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2024 · N902ST · Substantial damage
  > The skydiver’s unintentional parachute deployment and subsequent entanglement with the airplane’s horizontal stabilizer.
- [NTSB CEN22LA372](https://openairdocs.org/ntsb/CEN22LA372.md): Dehavilland DHC-3 · Talkeetna, AK · Accident · No injuries · Class 4 · Limited · Final report · Jul 28, 2022 · N320KT · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll which resulted in a runway excursion and collision with a ditch.
- [NTSB ERA16LA059](https://openairdocs.org/ntsb/ERA16LA059.md): Pacific Aerospace 750XL · Raeford, NC · Accident · No injuries · Limited investigation · Final report · Dec 3, 2015 · N216PK · Substantial damage
  > The pilot's failure to obtain the proper touchdown point and speed during a precautionary landing with the engine shut down. Contributing to the accident was an erroneous engine torque indication, which led the pilot to shut the engine down, for reasons that…
- [NTSB WPR15IA244](https://openairdocs.org/ntsb/WPR15IA244.md): Quest Kodiac 100 · Page, AZ · Incident · No injuries · Incident investigation · Final report · Aug 17, 2015 · N771RT · Minor damage
  > The pilot's inadvertent failure to engage the seat in the locked position before takeoff, which resulted in the seat sliding back during the takeoff roll and a subsequent loss of directional control. Contributing to the incident was the seat locking…
- [NTSB ERA15LA270](https://openairdocs.org/ntsb/ERA15LA270.md): Ayres S2R T34 · Climax, GA · Accident · No injuries · Limited investigation · Final report · Jul 9, 2015 · N524SL · Substantial damage
  > A loss of thrust on takeoff for reasons that could not be determined, because postaccident examination of the engine and propeller assembly did not reveal any mechanical anomalies that would have precluded normal operation.
- [NTSB ANC05LA110](https://openairdocs.org/ntsb/ANC05LA110.md): de Havilland DHC-3 · Ketchikan, AK · Accident · Serious injuries · Limited investigation · Final report · Jul 28, 2005 · N6868B · Minor damage
  > An electrical arc on the exterior of a fuel pressure line that initiated a fuel leak and fire during cruise flight, which resulted in serious injuries to the pilot as he performed an emergency landing on the water. A factor contributing to the accident was an…

## 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 ('52143'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52143

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