# NTSB investigations: Lycoming VO-540 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 LAX82FVG10](https://openairdocs.org/ntsb/LAX82FVG10.md): Hiller Acft UH-12E · Angels Camp, CA · Accident · No injuries · Closed · Dec 10, 1981 · N93478 · Substantial damage
- [NTSB FTW82DRG16](https://openairdocs.org/ntsb/FTW82DRG16.md): Bell 47G-4A · Encinal, TX · Accident · No injuries · Closed · Dec 9, 1981 · N8573F · Substantial damage
- [NTSB FTW82DRG07](https://openairdocs.org/ntsb/FTW82DRG07.md): Bell 47G-4A · Telegraph, TX · Accident · No injuries · Closed · Nov 2, 1981 · N62446 · Substantial damage
- [NTSB LAX81DJA01](https://openairdocs.org/ntsb/LAX81DJA01.md): Hiller Acft UH-12E · Kahului Maui, HI · Accident · No injuries · Closed · Oct 18, 1981 · N119HA · Substantial damage
- [NTSB LAX82DVA05](https://openairdocs.org/ntsb/LAX82DVA05.md): Bell 47G-4A · Wasco, CA · Accident · No injuries · Closed · Oct 16, 1981 · N7NB · Substantial damage
- [NTSB LAX81FVD43](https://openairdocs.org/ntsb/LAX81FVD43.md): Hiller Acft UH-12E · Brentwood, CA · Accident · Minor injuries · Closed · Sep 8, 1981 · N62392 · Substantial damage
- [NTSB LAX81DVA51](https://openairdocs.org/ntsb/LAX81DVA51.md): Hiller Acft UH-12E · Delano, CA · Accident · No injuries · Closed · Jun 27, 1981 · N174HA · Substantial damage
- [NTSB ATL81DA085](https://openairdocs.org/ntsb/ATL81DA085.md): Bell 47G-4 · Jackson, MS · Accident · No injuries · Closed · Jun 24, 1981 · N1198W · Substantial damage
- [NTSB FTW81FPG50](https://openairdocs.org/ntsb/FTW81FPG50.md): Hiller Acft UH-12E · Warren, AR · Accident · No injuries · Closed · Jun 21, 1981 · N178HA · Substantial damage
- [NTSB LAX81DVM24](https://openairdocs.org/ntsb/LAX81DVM24.md): Hiller Acft UH-12E · Shandon, CA · Accident · No injuries · Closed · Jun 15, 1981 · N40277 · Substantial damage
- [NTSB MKC81FCG36](https://openairdocs.org/ntsb/MKC81FCG36.md): Bell 47J-2 · Branson, MO · Accident · No injuries · Closed · May 26, 1981 · N73265 · Substantial damage
- [NTSB LAX81FJA10](https://openairdocs.org/ntsb/LAX81FJA10.md): Hiller Acft UH-12E · Lahaina, HI · Accident · No injuries · Closed · May 26, 1981 · N4027G · Substantial damage
- [NTSB SEA81FA035](https://openairdocs.org/ntsb/SEA81FA035.md): Bell 47G-4A · Aberdeen, WA · Accident · 2 fatal · Closed · May 19, 1981 · N9457 · Destroyed
- [NTSB LAX81FVA28](https://openairdocs.org/ntsb/LAX81FVA28.md): Hiller Acft UH12E · Huron, CA · Accident · No injuries · Closed · Mar 11, 1981 · N169HA · 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 ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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