# NTSB investigations: Lycoming VO-540 series, 1973

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 NYC74AN035](https://openairdocs.org/ntsb/NYC74AN035.md): Bell 47G-5 · Waynesburg, PA · Accident · 2 fatal · Closed · Oct 25, 1973 · N8556F · Destroyed
- [NTSB LAX74FUM09](https://openairdocs.org/ntsb/LAX74FUM09.md): Hiller Acft UH-12E · El Centro, CA · Accident · No injuries · Closed · Oct 19, 1973 · N5374V · Destroyed
- [NTSB SEA74DVA09](https://openairdocs.org/ntsb/SEA74DVA09.md): Hiller UH-12E · S.Glenns Ferry, ID · Accident · No injuries · Closed · Aug 26, 1973 · N7755 · Substantial damage
- [NTSB IAD74DIJ04](https://openairdocs.org/ntsb/IAD74DIJ04.md): Bell 47-G2A · Pulaski, VA · Accident · No injuries · Closed · Jul 30, 1973 · N8484E · Substantial damage
- [NTSB ANC74AA009](https://openairdocs.org/ntsb/ANC74AA009.md): Hiller Acft UH12L4 · Juneau, AK · Accident · No injuries · Closed · Jul 17, 1973 · N90470 · Substantial damage
- [NTSB ANC74AA006](https://openairdocs.org/ntsb/ANC74AA006.md): Hiller Acft UH-12E · Bettles, AK · Accident · No injuries · Closed · Jul 11, 1973 · N9743C · Substantial damage
- [NTSB CHI74FEA03](https://openairdocs.org/ntsb/CHI74FEA03.md): Bell 47G-2A · Little York, IN · Accident · No injuries · Closed · Jul 5, 1973 · N73257 · Substantial damage
- [NTSB IAD73FIJ25](https://openairdocs.org/ntsb/IAD73FIJ25.md): Bell 47G2A1 · Stickney, WV · Accident · 1 fatal · Closed · Jun 7, 1973 · N1215W · Destroyed
- [NTSB FTW73DQG40](https://openairdocs.org/ntsb/FTW73DQG40.md): Bell 47G-4A · Borger, TX · Accident · No injuries · Closed · May 25, 1973 · N4062G · 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 year(c."eventDate") = 1973
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&year=1973

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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.