# Ongoing NTSB investigations: Lycoming O-540-F1B5

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 ERA27LA017](https://openairdocs.org/ntsb/ERA27LA017.md): Robinson Helicopter R44 · Kinnelon, NJ · Accident · Minor injuries · Class 4 · Limited · Investigation open · Oct 20, 2026 · N744CJ
- [NTSB ANC26LA082](https://openairdocs.org/ntsb/ANC26LA082.md): Robinson Helicopter R44 · Macedonia, IA · Accident · Minor injuries · Class 4 · Limited · Investigation open · Aug 9, 2026 · N197HL · Substantial damage
- [NTSB CEN26LA259](https://openairdocs.org/ntsb/CEN26LA259.md): Robinson Helicopter R44 · Adair, IA · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 18, 2026 · N484AT · Substantial damage
  > On July 18, 2026, about 1440 central daylight time, a Robinson Helicopter Company R44, N484AT, was substantially damaged when it was involved in an accident near Adair, Iowa. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal…
- [NTSB ANC26LA051](https://openairdocs.org/ntsb/ANC26LA051.md): Robinson R44 · Pembroke Pines, FL · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Jun 13, 2026 · N336SG · Substantial damage
  > On June 13, 2026, about 1318 eastern daylight time, a Robinson R44 Raven I helicopter, N336SG, was substantially damaged when it was involved in an accident at the North Perry Airport (HWO), Hollywood, Florida. The pilot and three passengers sustained minor…

## 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 ('42353'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=42353&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.