# Ongoing NTSB investigations: AiResearch TPE331 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 WPR26FA309](https://openairdocs.org/ntsb/WPR26FA309.md): Cessna 441 · Cape Newenham, AK · Accident · 8 fatal · Class 3 · Field · Preliminary report · Aug 20, 2026 · N128EZ · Destroyed
  > On August 20, 2026, at about 1145 Alaska daylight time, a Cessna 441, N128EZ, was destroyed when it was involved in an accident near Cape Newenham, Alaska. The two pilots and six passengers were fatally injured. The airplane was operated as a Title 14 Code of…
- [NTSB DCA26LA151](https://openairdocs.org/ntsb/DCA26LA151.md): Fairchild SA227-AC · Denver, CO · Accident · No injuries · Class 4 · Limited · Investigation open · Mar 7, 2026 · N425MA · Substantial damage
- [NTSB WPR26LA080](https://openairdocs.org/ntsb/WPR26LA080.md): Fairchild SA227-AC · Prescott, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Jan 13, 2026 · N370AE · Substantial damage
  > On January 13, 2026, about 0624 mountain standard time, a Fairchild SA227-AC airplane, N370AE, was substantially damaged when it was involved in an accident near Prescott Municipal Airport (PRC), Prescott, Arizona. The pilot was not injured. The airplane was…
- [NTSB WPR26FA040](https://openairdocs.org/ntsb/WPR26FA040.md): Beech B100 · Coral Springs, FL · Accident · 2 fatal · Class 3 · Field · Preliminary report · Nov 10, 2025 · N30HG · Destroyed
  > On November 10, 2025, about 1019 eastern standard time, a Beech King Air B100, N30HG, was destroyed when it was involved in an accident near Coral Springs, Florida. The pilot and passenger were fatally injured. The airplane was operated as a Title 14 Code of…
- [NTSB ERA25FA246](https://openairdocs.org/ntsb/ERA25FA246.md): Cessna 441 · Warren, OH · Accident · 6 fatal · Class 3 · Field · Preliminary report · Jun 29, 2025 · N441LS · Substantial damage
  > On June 29, 2025, about 0654 eastern daylight time, a Cessna 441, N441LS, was destroyed when it was involved in an accident near Warren, Ohio. The airline transport pilot and five passengers were fatally injured. The airplane was operated as a Title 14 Code…
- [NTSB WPR25MA128](https://openairdocs.org/ntsb/WPR25MA128.md): Mitsubishi MU-2B-40 · Copake, NY · Accident · 6 fatal · Class 3 · Major · Preliminary report · Apr 12, 2025 · N635TA · Destroyed
  > On April 12, 2025, about 1203 eastern daylight time, a Mitsubishi MU-2B-40, N635TA, was destroyed when it was involved in an accident near Copake, New York. The pilot and five passengers were fatally injured. The airplane was operated as a Title 14 Code of…

## 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 ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&status=ongoing

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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.