# Fatal, Ongoing NTSB investigations: Lycoming 0-540 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 ERA26FA252](https://openairdocs.org/ntsb/ERA26FA252.md): Piper PA24 · Hazen, ND · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 28, 2026 · N6852P · Destroyed
  > On June 28, 2026, about 1317 central daylight time, a Piper PA-24-250, N6852P, was destroyed when it was involved in an accident near Hazen, North Dakota. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part…
- [NTSB WPR26FA224](https://openairdocs.org/ntsb/WPR26FA224.md): Piper PA-24-250 · Middlefield, OH · Accident · 3 fatal · Class 3 · Field · Preliminary report · Jun 20, 2026 · N6403P · Substantial damage
  > On June 20, 2026, about 1535 eastern daylight time, a Piper PA-24-250, N6403P, was substantially damaged when it was involved in an accident near Middlefield, Ohio. The pilot and two passengers sustained fatal injuries. The airplane was operated as a Title 14…
- [NTSB ERA26FA214](https://openairdocs.org/ntsb/ERA26FA214.md): Piper PA-25-235 · Saratoga Springs, NY · Accident · 1 fatal · Class 3 · Field · Preliminary report · May 26, 2026 · N8656L · 2 aircraft · Substantial damage
  > On May 26, 2026, about 1347 eastern daylight time, a Piper PA-25-235 airplane, N8656L, was substantially damaged when it was involved in an accident near Saratoga Springs, New York. The pilot was fatally injured. The airplane was operated as a Title 14 Code…
- [NTSB WPR26FA151](https://openairdocs.org/ntsb/WPR26FA151.md): Piper PA-32R-301T · Marana, AZ · Accident · 2 fatal · Class 3 · Field · Preliminary report · Apr 9, 2026 · N4190E · Substantial damage
  > On April 08, 2026 at 1710 mountain standard time, a Piper PA-32R-301T, N4190E, sustained substantial damage when it was involved in an accident near Marana, AZ. The pilot and passenger sustained fatal injuries. The airplane was operated as a Title 14 Code of…
- [NTSB ANC26FA021](https://openairdocs.org/ntsb/ANC26FA021.md): Robinson Helicopter R44 · Boynton Beach, FL · Accident · 2 fatal · Class 3 · Field · Preliminary report · Mar 23, 2026 · N478AT · Destroyed
  > On March 23, 2026, about 1221 eastern daylight time, a Robinson R44 Raven I helicopter, N478AT, was destroyed when it was involved in an accident near Boynton Beach, Florida. The flight instructor and the pilot receiving instruction were fatally injured. The…
- [NTSB WPR26FA069](https://openairdocs.org/ntsb/WPR26FA069.md): Piper PA-32-260 · Rio Linda, CA · Accident · 1 fatal · Class 3 · Field · Preliminary report · Dec 24, 2025 · N2785Q · Substantial damage
  > On December 24, 2025, at approximately 1230 Pacific standard time, a Piper PA-32-260, N2785Q, was substantially damaged when it was involved in an accident near Rio Linda, California. The pilot sustained serious injuries, and the pilot-rated passenger was…
- [NTSB CEN25FA308](https://openairdocs.org/ntsb/CEN25FA308.md): Cessna T182T · Augusta, AR · Accident · 1 fatal · Class 3 · Field · Preliminary report · Aug 7, 2025 · N35370 · Substantial damage
  > On August 7, 2025, at 1037 central daylight time, a Cessna T182T airplane, N35370, was substantially damaged when it was involved in an accident near Augusta, Arkansas. The pilot was fatally injured and the passenger received minor injuries. The airplane was…
- [NTSB CEN25FA124](https://openairdocs.org/ntsb/CEN25FA124.md): Robinson Helicopter R44 · Danville, VA · Accident · 1 fatal · Class 3 · Field · Preliminary report · Mar 15, 2025 · N331ES · Destroyed
  > On March 15, 2025, about 1500 eastern daylight time, a Robinson R44 helicopter, N331ES, was destroyed when it was involved in an accident near Danville, Virginia. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal…
- [NTSB WPR25FA079](https://openairdocs.org/ntsb/WPR25FA079.md): Piper PA-24-250 · Rock Springs, WY · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jan 14, 2025 · N6502P
  > On January 14, 2025, about 0622 mountain standard time, a Piper PA-24-250, N6502P, was destroyed when it was involved in an accident near Rock Springs, Wyoming. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…

## 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."highestInjuryLevel" = 'Fatal'
  AND 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 ('41532'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41532&fatal=1&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.