# Fatal NTSB investigations: Lycoming IO-540-D4A5

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 WPR22FA172](https://openairdocs.org/ntsb/WPR22FA172.md): Vans RV10 · Sausalito, CA · Accident · 2 fatal · Class 3 · Field · Final report · May 6, 2022 · N54MG · Substantial damage
  > The pilot’s improper decision to continue a visual flight rules flight into an area of limited visibility conditions, which resulted in spatial disorientation and a loss of airplane control.
- [NTSB CEN17FA035](https://openairdocs.org/ntsb/CEN17FA035.md): Stamper RV-10 · Dubois, WY · Accident · 1 fatal · Field investigation · Final report · Nov 5, 2016 · N924WY · Destroyed
  > The pilot's failure to maintain adequate airspeed after becoming distracted by the opening of the gull-wing cabin door during takeoff, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall at a low…
- [NTSB ERA15FA359](https://openairdocs.org/ntsb/ERA15FA359.md): Boatright Waylon RV10 · Alma, GA · Accident · 5 fatal · Field investigation · Final report · Sep 16, 2015 · N122WK · Destroyed
  > The noncertificated pilot's decision to perform aerobatic maneuvers in his overweight, improperly-loaded airplane in dark night conditions at low altitude, which resulted in a loss of airplane control and collision with terrain. Contributing to the accident…

## 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 ('41798'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41798&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.