# Fatal NTSB investigations: Lycoming IO-540-C4B5

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 CEN21LA096](https://openairdocs.org/ntsb/CEN21LA096.md): Express CT · Grand Prairie, TX · Accident · 2 fatal · Class 3 · Limited · Final report · Dec 21, 2020 · N772BM · Destroyed
  > The pilot’s loss of airplane control during the departure turn, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB CEN15FA321](https://openairdocs.org/ntsb/CEN15FA321.md): Christensen Steve Wheeler Express · Holland, MN · Accident · 3 fatal · Field investigation · Final report · Jul 28, 2015 · N3FC · Substantial damage
  > The pilot’s failure to maintain adequate airspeed during a high-pitch, steep right turn, which resulted in the exceedance of the airplane’s critical angle-of-attack and a subsequent aerodynamic stall, loss of control, and impact with terrain. Contributing to…
- [NTSB NYC08FA157](https://openairdocs.org/ntsb/NYC08FA157.md): Cartwright H Jr/Cottrell M RV-10 · Seale, AL · Accident · 2 fatal · Field investigation · Final report · Apr 7, 2008 · N210HM · Destroyed
  > The pilot-in-command's in-flight loss of control due to spatial disorientation. Contributing to the accident were the weather conditions and the pilot-in-command's lack of flight experience in the accident airplane.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41651'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41651&fatal=1

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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.