# NTSB investigations: Lycoming AEIO-540 series, MD

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 NYC04LA006](https://openairdocs.org/ntsb/NYC04LA006.md): Extra Flugzeugbau EA-300L · Queen Anne, MD · Accident · 1 fatal · Limited investigation · Final report · Oct 12, 2003 · N18NL · Destroyed
  > The pilot's performance of aerobatic maneuvers with positive and negative Gs, which resulted in a G induced loss of control, and uncontrolled impact with the ground.
- [NTSB IAD99LA022](https://openairdocs.org/ntsb/IAD99LA022.md): Pitts S-2B · Easton, MD · Accident · Serious injuries · Limited investigation · Final report · Nov 28, 1998 · N340PS · 2 aircraft · Substantial damage
  > The failure of both the pilot-in-command (CFI) and dual student of the other aircraft (Pitts) to maintain adequate visual lookout.
- [NTSB BFO93LA045](https://openairdocs.org/ntsb/BFO93LA045.md): Pitts S-2B · Hillsboro, MD · Accident · Serious injuries · Limited investigation · Final report · Mar 7, 1993 · N12QW · Destroyed
  > Failure of the pilot to maintain airspeed, while performing aerobatic maneuvers, which resulted in an inadvertent flat spin and an uncontrolled descent into terrain.

## 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" = 'MD' 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=MD

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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.