# NTSB investigations: Lycoming IO-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 SEA81DYP40](https://openairdocs.org/ntsb/SEA81DYP40.md): Eagle DW-1 · Chelan, WA · Accident · No injuries · Closed · Sep 16, 1981 · N8802E · Substantial damage
- [NTSB ANC81FA105](https://openairdocs.org/ntsb/ANC81FA105.md): Piper PA-32 · Lk Clark Pass, AK · Accident · No injuries · Closed · Sep 2, 1981 · N4258N · Substantial damage
- [NTSB LAX81FA121](https://openairdocs.org/ntsb/LAX81FA121.md): Piper PA-32R · Grand Canyon, AZ · Accident · 6 fatal · Closed · Aug 21, 1981 · N9822C · Destroyed
- [NTSB DEN81FTE47](https://openairdocs.org/ntsb/DEN81FTE47.md): Bellanca DW1 · Loveland, CO · Accident · No injuries · Closed · Jun 26, 1981 · N8802B · Substantial damage
- [NTSB MKC81DCD13](https://openairdocs.org/ntsb/MKC81DCD13.md): Piper PA32RT · Waterloo, IA · Accident · No injuries · Closed · Apr 3, 1981 · N36150 · Substantial damage
- [NTSB CHI81FER26](https://openairdocs.org/ntsb/CHI81FER26.md): Piper PA-32 · Faribault, MN · Accident · No injuries · Closed · Mar 10, 1981 · N8157R · Substantial damage
- [NTSB LAX81DUG13](https://openairdocs.org/ntsb/LAX81DUG13.md): Piper PA-32 · Salton Sea, CA · Accident · No injuries · Closed · Feb 14, 1981 · N47831 · Substantial damage
- [NTSB MIA81DA044](https://openairdocs.org/ntsb/MIA81DA044.md): Piper PA-32 · Aruba (Atlantic Ocean) · Accident · 2 fatal · Closed · Feb 2, 1981 · N9637C · Destroyed
- [NTSB DEN81FTE16](https://openairdocs.org/ntsb/DEN81FTE16.md): Bellanca 17-31 · Englwood, CO · Accident · Serious injuries · Closed · Jan 19, 1981 · N245MB · Substantial damage
- [NTSB NYC81IA019](https://openairdocs.org/ntsb/NYC81IA019.md): Piper PA-32 · Coatesville, PA · Incident · No injuries · Closed · Jan 15, 1981 · N2147N · Minor 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 ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41530&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.