# Ongoing 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…

## 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."completionStatus" = 'Ongoing'
  AND 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&status=ongoing

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