# NTSB investigations: Lycoming VO-435 series, 1981

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 CHI82DER14](https://openairdocs.org/ntsb/CHI82DER14.md): Bell 47G2 · Kerrick, MN · Accident · No injuries · Closed · Nov 28, 1981 · N13298 · Substantial damage
- [NTSB LAX81DUK10](https://openairdocs.org/ntsb/LAX81DUK10.md): Texas Hel OH-13H · Yuma, AZ · Accident · No injuries · Closed · Sep 25, 1981 · N51853 · Substantial damage
- [NTSB NYC81FHJ17](https://openairdocs.org/ntsb/NYC81FHJ17.md): Bell 47G-2 · Farmingdale, NY · Accident · No injuries · Closed · Sep 13, 1981 · N6733D · Substantial damage
- [NTSB NYC81FGM30](https://openairdocs.org/ntsb/NYC81FGM30.md): Bell 47G-2A · Hollidaysburg, PA · Accident · Minor injuries · Closed · Sep 7, 1981 · N7764 · Destroyed
- [NTSB LAX81DUK02](https://openairdocs.org/ntsb/LAX81DUK02.md): Bell 47G-5 · Yuma, AZ · Accident · No injuries · Closed · Sep 4, 1981 · N2294W · Substantial damage
- [NTSB CHI81FER60](https://openairdocs.org/ntsb/CHI81FER60.md): Bell 47G3B1 · Stewart, MN · Accident · No injuries · Closed · Aug 12, 1981 · N96671 · Substantial damage
- [NTSB LAX81FUQ25](https://openairdocs.org/ntsb/LAX81FUQ25.md): Bell 47G-2 · Agua Dulce, CA · Accident · No injuries · Closed · Jul 5, 1981 · N9763Z · Substantial damage
- [NTSB CHI81DER47](https://openairdocs.org/ntsb/CHI81DER47.md): Bell 47G-2 · Gully, MN · Accident · No injuries · Closed · Jun 27, 1981 · N6744D · Substantial damage
- [NTSB CHI81FEV21](https://openairdocs.org/ntsb/CHI81FEV21.md): Texas Hel OH-13H · Danville, IL · Accident · 1 fatal · Closed · Jun 16, 1981 · N10002 · Destroyed
- [NTSB CHI81DEP22](https://openairdocs.org/ntsb/CHI81DEP22.md): Bell 47G-5 · Coloma, WI · Accident · No injuries · Closed · Jun 12, 1981 · N1315X · Substantial damage
- [NTSB SEA81DYE31](https://openairdocs.org/ntsb/SEA81DYE31.md): Hiller UN-12D · Castle Rock, WA · Accident · Minor injuries · Closed · Jun 10, 1981 · N62377 · Destroyed
- [NTSB LAX81FUG25](https://openairdocs.org/ntsb/LAX81FUG25.md): Bell 47G-2 · Oasis, CA · Accident · Serious injuries · Closed · Apr 30, 1981 · N2498B · Destroyed
- [NTSB FTW81DPJ24](https://openairdocs.org/ntsb/FTW81DPJ24.md): Bell 47D1 · Okeene, OK · Accident · No injuries · Closed · Apr 25, 1981 · N7768 · Substantial damage
- [NTSB MIA81FA053](https://openairdocs.org/ntsb/MIA81FA053.md): Hiller UH-12D · Miami Beach, FL · Accident · Minor injuries · Closed · Mar 20, 1981 · N62376 · Destroyed
- [NTSB LAX81DVM17](https://openairdocs.org/ntsb/LAX81DVM17.md): Bell 47G · Pescadero, CA · Accident · No injuries · Closed · Mar 17, 1981 · N62221 · Destroyed
- [NTSB MIA81FKT31](https://openairdocs.org/ntsb/MIA81FKT31.md): Hiller Acft UH-12D · Miami, FL · Accident · No injuries · Closed · Mar 8, 1981 · N62362 · 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") = 1981
  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=1981

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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.