# NTSB investigations: Lycoming IO-320 series, WI

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 CHI01LA096](https://openairdocs.org/ntsb/CHI01LA096.md): Piper PA-30 · Appleton, WI · Accident · No injuries · Limited investigation · Final report · Feb 27, 2001 · N8196Y · Substantial damage
  > The misjudged glidepath and the intentional engine shutdown by the pilot. Factors were the false indication of the landing gear down light and the approach light.
- [NTSB CHI96FA278](https://openairdocs.org/ntsb/CHI96FA278.md): Lancair 320 · Fond Du Lac, WI · Accident · 1 fatal · Field investigation · Final report · Aug 8, 1996 · N320L · Destroyed
  > the fatigue in the propeller flange with soft material and oversized lightening holes. A factor was the pilot's inability to maintain control of the aircraft due to the exceeded weight and balance which led to a stall/spin.
- [NTSB CHI96LA253](https://openairdocs.org/ntsb/CHI96LA253.md): Yasecko LONG-EZE · Waukesha, WI · Accident · No injuries · Limited investigation · Final report · Jul 24, 1996 · N303Y · Substantial damage
  > Failure of the throttle cable.
- [NTSB CHI90LA187](https://openairdocs.org/ntsb/CHI90LA187.md): Piper PA-30B · Webster, WI · Accident · No injuries · Limited investigation · Final report · Jul 14, 1990 · N8095Y · Substantial damage
  > The failure of the nose gear transmission mounting bracket which resulted in nose gear collapse during the landing roll.
- [NTSB CHI89DEP09](https://openairdocs.org/ntsb/CHI89DEP09.md): Cabrinha/Free Spirit 412 · Waukesha, WI · Accident · No injuries · Final report · Jul 28, 1989 · N412RC · Substantial damage
  > The plt became lost/disoriented and allowed fuel exhaustion to occur before accomplishing remedial action. Factors related to the accident were: the adverse environmental conditions and the road sign and vehicles in the emergency landing area.
- [NTSB CHI89LA053](https://openairdocs.org/ntsb/CHI89LA053.md): Aeronca 7KCAB · Pine Creek, WI · Accident · No injuries · Limited investigation · Final report · Mar 5, 1989 · N9044L · Substantial damage
  > The pilot's selection of unsuitable terrain which resulted in the failure to achieve a proper climb rate which resulted in the collision with trees. Contributing to the accident was the uphill, snow covered terrain.
- [NTSB CHI83LA423](https://openairdocs.org/ntsb/CHI83LA423.md): Beemer Pitts S-1C · Portage, WI · Accident · No injuries · Limited investigation · Final report · Aug 6, 1983 · N46807 · Substantial damage
  > The acft had just been purchased & was being ferried to palatka, FL. During the landing roll at an en route arpt, the acft ground looped, and subsequently, came to rest inverted. The plt stated that this was his 1st landing in the pitts S-10 & that he was…
- [NTSB CHI81FEP45](https://openairdocs.org/ntsb/CHI81FEP45.md): Piper PA-30 · Racine, WI · Accident · Minor injuries · Closed · Sep 7, 1981 · N8786Y · Substantial damage
- [NTSB CHI79FA072](https://openairdocs.org/ntsb/CHI79FA072.md): Piper PA-24 · Bloomfield Twp, WI · Accident · 2 fatal · Closed · Sep 2, 1979 · N6051P · 2 aircraft · Substantial damage
- [NTSB CHI75DEP17](https://openairdocs.org/ntsb/CHI75DEP17.md): Piper PA-30 · Madison, WI · Accident · No injuries · Closed · Aug 4, 1974 · N7690Y · Substantial damage
- [NTSB CHI67F0674](https://openairdocs.org/ntsb/CHI67F0674.md): Piper PA-30 · Waukesha, WI · Accident · No injuries · Closed · May 18, 1967 · N7925Y · 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 c."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41509'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41509&state=WI

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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.