# NTSB investigations: Lycoming AEIO-540 series, OK

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 CEN09CA287](https://openairdocs.org/ntsb/CEN09CA287.md): Pitts Aerobatics S-2B · Muskogee, OK · Accident · Serious injuries · Data collection · Final report · May 9, 2009 · N6027V · Substantial damage
  > Inadequate supervision by the certified flight instructor, resulting in a delayed stall recovery attempt.
- [NTSB DFW05FA242](https://openairdocs.org/ntsb/DFW05FA242.md): Akro Tech Aviation Inc. Giles G-300 · Yukon, OK · Accident · 1 fatal · Field investigation · Final report · Sep 18, 2005 · N300NW · Destroyed
  > The catastrophic separation of the canopy as result of the failure of the forward canopy hinge while performing aerobatics and the subsequent incapacitation of the pilot.

## 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."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41568'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41568&state=OK

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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.