# NTSB investigations: Lycoming VO-435 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 BFO89LA049](https://openairdocs.org/ntsb/BFO89LA049.md): Bell 47J · Fruitland, MD · Accident · No injuries · Limited investigation · Final report · Jul 2, 1989 · N6760D · Substantial damage
  > Poor judgement of the pilot by flying, while physically impaired by alcohol, and his misjudgement of clearance between the helicopter and the structure. The dark night and object (structure) were considered to be contributing factors.
- [NTSB NYC66A0014](https://openairdocs.org/ntsb/NYC66A0014.md): Bell 47G2 · Hollywood, MD · Accident · No injuries · Closed · Jul 27, 1965 · N6752D · Substantial damage
- [NTSB NYC65A0147](https://openairdocs.org/ntsb/NYC65A0147.md): Bell 47G2 · Laurel, MD · Accident · No injuries · Closed · Jun 11, 1965 · N6758D · Substantial damage

## 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 ('41525'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41525&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.