# NTSB investigations: Lycoming AEIO-360 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 CEN25LA287](https://openairdocs.org/ntsb/CEN25LA287.md): Aerotek Pitts S-2A · New Holstein, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 26, 2025 · N83PS · Substantial damage
  > The pilot’s loss of direction control during landing due to an unapproved tailwheel assembly and tail spring that resulted in a tailwheel shimmy and a subsequent ground loop.
- [NTSB CEN25LA024](https://openairdocs.org/ntsb/CEN25LA024.md): Pitts S-2A · Stoughton, WI · Accident · No injuries · Class 4 · Limited · Final report · Oct 19, 2024 · N11JC · Substantial damage
  > The pilot’s failure to maintain directional control during landing.
- [NTSB CEN22LA302](https://openairdocs.org/ntsb/CEN22LA302.md): Pitts S1 · Sturgeon Bay, WI · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 1, 2022 · N23RS · Substantial damage
  > The pilot’s failure to maintain airplane control during landing, which resulted in a runway excursion and nose over. Contributing to the accident was the pilot’s inadequate preflight inspection and the pilot’s lack of flight control system knowledge.
- [NTSB CEN22FA019](https://openairdocs.org/ntsb/CEN22FA019.md): American Champion 8KCAB · Marengo, WI · Accident · 2 fatal · Class 3 · Field · Final report · Oct 23, 2021 · N843AC · Destroyed
  > The pilot’s failure to maintain adequate airspeed during the steep turn, which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall. Also causal was the pilot’s decision to conduct steep turns without sufficient altitude to…
- [NTSB CHI01FA235](https://openairdocs.org/ntsb/CHI01FA235.md): Payne Giles G-202 · Oshkosh, WI · Accident · 1 fatal · Field investigation · Final report · Jul 24, 2001 · N202RP · Destroyed
  > The pilot failed to maintain aircraft control which resulted in an inadvertant stall. Factors with the accident were the pilot misjudged the approach and the pilot's lack of total experience in the Giles G-202.
- [NTSB CHI91DEP08](https://openairdocs.org/ntsb/CHI91DEP08.md): Jack Thomas Pitts S-IT · Kenosha, WI · Accident · 1 fatal · Final report · Jun 16, 1991 · N83AM · Destroyed
  > Improper maintenance, by person or persons unknown, to the elevator control system which allowed a bolt attaching the elevator control rod to the pitch bellcrank to become disconnected during flight.
- [NTSB CHI82DA063](https://openairdocs.org/ntsb/CHI82DA063.md): Bellanca 8KCAB · Franklin, WI · Accident · Serious injuries · Final report · Feb 21, 1982 · N1218E · Substantial damage
  > After a 1.8 hour flight, the fixed base operator serviced the aircraft with 15 gallons of fuel. The pilot stated that he drained the sumps as part of his preflight. The pretakeoff checks and takeoff roll were normal. At about 75 to 100 feet AGL, the engine…

## 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 ('41522', '41601'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41522&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.