# NTSB investigations: Lycoming VO-435 series, 1971

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 LAX72FVA37](https://openairdocs.org/ntsb/LAX72FVA37.md): Bell 47G5 · Mcfarland, CA · Accident · Serious injuries · Closed · Dec 17, 1971 · N8557F · Destroyed
- [NTSB LAX72FUG39](https://openairdocs.org/ntsb/LAX72FUG39.md): Bell 47B · La Verne, CA · Accident · No injuries · Closed · Dec 15, 1971 · N514SF · Substantial damage
- [NTSB LAX72FUQ44](https://openairdocs.org/ntsb/LAX72FUQ44.md): Bell 47G5 · Glendale, CA · Accident · Minor injuries · Closed · Nov 12, 1971 · N4713R · 2 aircraft · Substantial damage
- [NTSB SEA72DYE16](https://openairdocs.org/ntsb/SEA72DYE16.md): Bell 47G2 · Clallam Bay, WA · Accident · No injuries · Closed · Oct 6, 1971 · N5160B · Substantial damage
- [NTSB MKC72DER18](https://openairdocs.org/ntsb/MKC72DER18.md): Bell 47G-5 · Blomkist, MN · Accident · Minor injuries · Closed · Aug 25, 1971 · N7840S · Destroyed
- [NTSB CHI72FET06](https://openairdocs.org/ntsb/CHI72FET06.md): Bell 47G-2 · Laporte, IN · Accident · Minor injuries · Closed · Aug 18, 1971 · N2495B · Destroyed
- [NTSB SEA72DYC08](https://openairdocs.org/ntsb/SEA72DYC08.md): Bell 47G3B1 · Legrande, OR · Accident · No injuries · Closed · Jul 20, 1971 · N1324X · Destroyed
- [NTSB ANC72DAG11](https://openairdocs.org/ntsb/ANC72DAG11.md): Hiller 12-E4 · Chitina, AK · Accident · Serious injuries · Closed · Jul 20, 1971 · N9759C · Substantial damage
- [NTSB MKC71DER74](https://openairdocs.org/ntsb/MKC71DER74.md): Bell 47G2 · Franklin, MN · Accident · Minor injuries · Closed · Jun 15, 1971 · N13298 · Substantial damage
- [NTSB UNK71X0109](https://openairdocs.org/ntsb/UNK71X0109.md): Bell 47G-4A · Angola, Angola · Accident · No injuries · Closed · Jun 8, 1971 · N4002G · Substantial damage
- [NTSB NYC71FHA51](https://openairdocs.org/ntsb/NYC71FHA51.md): Bell 47G2 · Branchville, NJ · Accident · 1 fatal · Closed · Jun 8, 1971 · N8426E · Destroyed
- [NTSB LAX71FUQ89](https://openairdocs.org/ntsb/LAX71FUQ89.md): Bell 47G3B1 · Pacoima, CA · Accident · No injuries · Closed · Jun 7, 1971 · N1133W · 2 aircraft · Substantial damage
- [NTSB MIA71DKT52](https://openairdocs.org/ntsb/MIA71DKT52.md): Bell 47G2A · Buckingham, FL · Accident · Minor injuries · Closed · Mar 31, 1971 · N73220 · Substantial damage
- [NTSB MKC71FCA27](https://openairdocs.org/ntsb/MKC71FCA27.md): Bell 47G5 · Creve Coeur, MO · Accident · No injuries · Closed · Mar 20, 1971 · N7043J · Substantial damage
- [NTSB OAK71AP032](https://openairdocs.org/ntsb/OAK71AP032.md): Bell 47G-5 · S.Francisco, CA · Accident · 1 fatal · Closed · Feb 11, 1971 · N2294W · 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") = 1971
  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=1971

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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.