# NTSB investigations: Lycoming VO-435 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 LAX74DUG31](https://openairdocs.org/ntsb/LAX74DUG31.md): Bell 47G-5 · La Verne, CA · Accident · No injuries · Closed · Nov 30, 1973 · N4741R · Substantial damage
- [NTSB SEA74DYE20](https://openairdocs.org/ntsb/SEA74DYE20.md): Bell 47F-2 · Forks, WA · Accident · No injuries · Closed · Oct 8, 1973 · N5161B · Substantial damage
- [NTSB FTW74FPG26](https://openairdocs.org/ntsb/FTW74FPG26.md): Bell 47G2A1 · Little Rock, AR · Accident · No injuries · Closed · Sep 29, 1973 · N73970 · Substantial damage
- [NTSB FTW74FPG23](https://openairdocs.org/ntsb/FTW74FPG23.md): Bell 47G2 · Viola, AR · Accident · Serious injuries · Closed · Sep 18, 1973 · N2870B · Substantial damage
- [NTSB CHI74DEA13](https://openairdocs.org/ntsb/CHI74DEA13.md): Bell 47G-2A · Veedersburg, IN · Accident · No injuries · Closed · Sep 16, 1973 · N7579 · Substantial damage
- [NTSB IAD74DKM17](https://openairdocs.org/ntsb/IAD74DKM17.md): Bell 47G-2 · Yadkinville, NC · Accident · No injuries · Closed · Sep 1, 1973 · N262MV · Substantial damage
- [NTSB OAK74FVM08](https://openairdocs.org/ntsb/OAK74FVM08.md): Bell 47G-5 · Santa Clara, CA · Accident · Minor injuries · Closed · Aug 31, 1973 · N4754R · Substantial damage
- [NTSB MIA74D1011](https://openairdocs.org/ntsb/MIA74D1011.md): Bell 47G-2 · Dalzell, SC · Accident · Minor injuries · Closed · Aug 31, 1973 · N6711D · Substantial damage
- [NTSB FTW74DRG16](https://openairdocs.org/ntsb/FTW74DRG16.md): Bell 47G-2 · Harlingen, TX · Accident · No injuries · Closed · Aug 21, 1973 · N17121 · Substantial damage
- [NTSB FTW74FPJ06](https://openairdocs.org/ntsb/FTW74FPJ06.md): EL Tomcat MK5 · Springer, OK · Accident · 1 fatal · Closed · Aug 16, 1973 · N11VH · Substantial damage
- [NTSB LAX74DUJ05](https://openairdocs.org/ntsb/LAX74DUJ05.md): Bell 47G-5 · Yuma, AZ · Accident · No injuries · Closed · Jul 27, 1973 · N2294W · Substantial damage
- [NTSB OAK74FVM01](https://openairdocs.org/ntsb/OAK74FVM01.md): Bell 47G-2 · Salinas, CA · Accident · Minor injuries · Closed · Jul 5, 1973 · N6728D · Substantial damage
- [NTSB DEN74FTE02](https://openairdocs.org/ntsb/DEN74FTE02.md): Bell 47G-5A · Aurora, CO · Accident · No injuries · Closed · Jul 5, 1973 · N2991W · Substantial damage
- [NTSB MIA73FKQ30](https://openairdocs.org/ntsb/MIA73FKQ30.md): Bell 47G2-2 · Grenada, MS · Accident · No injuries · Closed · Jun 25, 1973 · N4823 · Substantial damage
- [NTSB MKC73FCA30](https://openairdocs.org/ntsb/MKC73FCA30.md): Bell 47G-5 · St Louis, MO · Accident · Minor injuries · Closed · Jun 24, 1973 · N7043J · Destroyed
- [NTSB CHI73DEP66](https://openairdocs.org/ntsb/CHI73DEP66.md): Bell 47G-5 · Appleton, WI · Accident · Minor injuries · Closed · Jun 24, 1973 · N7840S · Substantial damage
- [NTSB SEA73FYC37](https://openairdocs.org/ntsb/SEA73FYC37.md): Bell 47G-3B · Warm Springs, OR · Accident · Serious injuries · Closed · Jun 21, 1973 · N1324X · Destroyed
- [NTSB OAK73DVA62](https://openairdocs.org/ntsb/OAK73DVA62.md): Bell 47G-2 · Kettlmn Cty, CA · Accident · No injuries · Closed · Jun 9, 1973 · N6720D · Substantial damage
- [NTSB MKC73DER66](https://openairdocs.org/ntsb/MKC73DER66.md): Bell 47G-2 · Brainerd, MN · Accident · No injuries · Closed · Jun 1, 1973 · N65520 · Substantial damage
- [NTSB MKC73AK059](https://openairdocs.org/ntsb/MKC73AK059.md): Bell 47G-2 · Owatonna, MN · Accident · No injuries · Closed · Apr 6, 1973 · N38926 · Substantial damage
- [NTSB OAK73DVD28](https://openairdocs.org/ntsb/OAK73DVD28.md): Bell 47G-2 · Stockton, CA · Accident · No injuries · Closed · Mar 18, 1973 · N5162B · Substantial damage
- [NTSB MKC73AKO55](https://openairdocs.org/ntsb/MKC73AKO55.md): Bell 47J · Kansas City, MO · Accident · Minor injuries · Closed · Mar 2, 1973 · N6780D · Destroyed
- [NTSB OAK73FJA12](https://openairdocs.org/ntsb/OAK73FJA12.md): Bell 47G-5 · Koloa, HI · Accident · Serious injuries · Closed · Feb 7, 1973 · N7060J · Substantial damage
- [NTSB FTW73DRG47](https://openairdocs.org/ntsb/FTW73DRG47.md): Bell 47G-5 · Harlingen, TX · Accident · No injuries · Closed · Feb 2, 1973 · N7923J · Substantial damage
- [NTSB MIA73DLD54](https://openairdocs.org/ntsb/MIA73DLD54.md): Bell 47G-5 · Avon Park, FL · Accident · No injuries · Closed · Jan 27, 1973 · N1476W · Destroyed

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

This list as a web page: https://openairdocs.org/ntsb?engine=41525&year=1973

---
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.