# NTSB investigations: Lycoming IO-720 series, 1984

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 MKC84LA176](https://openairdocs.org/ntsb/MKC84LA176.md): Piper PA-36-375 · Storm Lake, IA · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 1984 · N3953E · Substantial damage
  > While on the 2nd swath run, the plt maneuvered the acft to cross under power lines bordering the edge of the corn field. He said he misjudged the distance to clear the power lines. The vertical stabilizer & rudder struck the lines & were torn from the acft.…
- [NTSB DEN84LA138](https://openairdocs.org/ntsb/DEN84LA138.md): Piper PA-36-375 · Albuquerque, NM · Accident · No injuries · Limited investigation · Final report · Apr 25, 1984 · N2371Y · Substantial damage
  > The acft had recently been sold & was being ferried to the buyer in Oklahoma. After a refueling stop at the coronado arpt, the plt took off & proceeded northeast to avoid rotor clouds associated with the sandia mountains about 8 mi east of Albuquerque, NM.…

## 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") = 1984
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41546'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41546&year=1984

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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.