# NTSB investigations: Lycoming IO-540 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 CEN17FA287](https://openairdocs.org/ntsb/CEN17FA287.md): Aerofab Lake LA 4 250 · Oshkosh, WI · Accident · 2 fatal · Field investigation · Final report · Jul 28, 2017 · N1400P · Substantial damage
  > The pilot's failure to properly configure the airplane for takeoff and his decision to takeoff with a tailwind in unfavorable water conditions, which resulted in the airplane entering an aerodynamic stall and the pilot losing control.
- [NTSB CEN12LA573](https://openairdocs.org/ntsb/CEN12LA573.md): Robinson Helicopter R44 II · Belgium, WI · Accident · No injuries · Limited investigation · Final report · Aug 10, 2012 · N144DZ · Substantial damage
  > The pilot’s failure to maintain control of the helicopter while landing in gusting wind conditions, which resulted in a hard landing.
- [NTSB CEN10LA529](https://openairdocs.org/ntsb/CEN10LA529.md): Piper Aerostar 601P · Baraboo, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 18, 2010 · N601PP · Substantial damage
  > The pilot's diverted attention during an approach for landing that resulted in an altitude loss and impact with terrain.
- [NTSB CHI08FA293](https://openairdocs.org/ntsb/CHI08FA293.md): Robinson R44 II · Kenosha, WI · Accident · 2 fatal · Field investigation · Final report · Sep 21, 2008 · N999ZD · Destroyed
  > The pilots failure to maintain clearance from terrain resulting in an in-flight collision with a house. Contributing to the accident was the night instrument meteorological conditions (IMC) and the pilot's lack of experience of flying in IMC.
- [NTSB CHI08LA272](https://openairdocs.org/ntsb/CHI08LA272.md): Socata TB-20 Trinidad · Cassville, WI · Accident · 1 fatal · Limited investigation · Final report · Sep 3, 2008 · N597TB · Substantial damage
  > The left seat pilot's failure to maintain control of the airplane during a go-around and the inadvertent in-flight opening of the cabin door for undetermined reasons. Contributing to the accident was the distraction of the door opening.
- [NTSB CHI07CA158](https://openairdocs.org/ntsb/CHI07CA158.md): Cessna 182S · Cedarburg, WI · Accident · No injuries · Data collection · Final report · May 28, 2007 · N2366M · Substantial damage
  > The improper landing flare which resulted in the airplane porpoising during the landing and the subsequent overload of the nose gear.
- [NTSB CHI07LA092](https://openairdocs.org/ntsb/CHI07LA092.md): Socata TB-20 Trinidad · Rhinelander, WI · Accident · No injuries · Limited investigation · Final report · Mar 19, 2007 · N900Y · Substantial damage
  > The failure of the pilot to maintain directional control of the airplane during taxi. A contributing factor was the gusting winds and sign.
- [NTSB CHI06CA122](https://openairdocs.org/ntsb/CHI06CA122.md): Cessna 182T · Madison, WI · Accident · No injuries · Data collection · Final report · Apr 28, 2006 · N1129P · Substantial damage
  > The student pilot's failure to maintain directional control during landing which resulted in a runway excursion and collapse of the nose landing gear. A contributing factor was the pilot's inadequate compensation for the crosswind condition. Additional…
- [NTSB CHI05CA270](https://openairdocs.org/ntsb/CHI05CA270.md): Cessna 182S · Waukesha, WI · Accident · No injuries · Data collection · Final report · Sep 18, 2005 · N5467C · Substantial damage
  > The misjudged flare by the pilot.
- [NTSB CHI04CA250](https://openairdocs.org/ntsb/CHI04CA250.md): Piper PA-32-301 · Crivitz, WI · Accident · No injuries · Data collection · Final report · Sep 2, 2004 · N8173J · Substantial damage
  > The proper touchdown point not attained by the pilot during landing. The road and tailwind were contributing factors.
- [NTSB CHI04LA034](https://openairdocs.org/ntsb/CHI04LA034.md): Piper PA-32-300 · Superior, WI · Accident · No injuries · Limited investigation · Final report · Nov 21, 2003 · N28693 · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during the landing roll. Factors associated with the accident were the ditch that the airplane contacted.
- [NTSB CHI02FA120](https://openairdocs.org/ntsb/CHI02FA120.md): Cessna 182S · Sheboygan, WI · Accident · 1 fatal · Field investigation · Final report · May 3, 2002 · N293MA · Destroyed
  > The pilot failed to maintain control of the airplane during the go-around for undetermined reasons.
- [NTSB CHI01FA244](https://openairdocs.org/ntsb/CHI01FA244.md): Schuchart Stoddard HamiltonSH3 · Oshkosh, WI · Accident · 1 fatal · Field investigation · Final report · Jul 26, 2001 · N325HP · Destroyed
  > The inadvertent stall/spin by the pilot.
- [NTSB CHI00FA284](https://openairdocs.org/ntsb/CHI00FA284.md): Beech K35 · Manitowish Watr, WI · Accident · 2 fatal · Field investigation · Final report · Sep 2, 2000 · N3076C · Destroyed
  > the pilot not maintaining altitude/clearance from the trees during an approach on a dark, low overcast night, the pilot's improper use of an IFR procedure without clearance, and the pilot's improper in-flight decision to attempt an IFR approach without…
- [NTSB CHI00LA189](https://openairdocs.org/ntsb/CHI00LA189.md): Staudacher S-300D2 · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Jul 7, 2000 · N112KG · Substantial damage
  > The fatigue failure of the rod end bearing and the separation of the aileron. A factor was the inadequate design change by the aircraft designer.
- [NTSB CHI00LA073](https://openairdocs.org/ntsb/CHI00LA073.md): Piper PA-23-250 · Amery, WI · Accident · No injuries · Limited investigation · Final report · Feb 15, 2000 · N106RS · Substantial damage
  > the pilots failure to maintain directional control. Factors to the accident were the icing conditions, the snow and ice covered runway and the snowbank.
- [NTSB CHI93LA294](https://openairdocs.org/ntsb/CHI93LA294.md): North American F-51 · Fond Du Lac, WI · Accident · No injuries · Limited investigation · Final report · Jul 28, 1993 · N6327T · 2 aircraft · Minor damage
  > the pilot-in-command of the F-51's diverted attention and failure to maintain a visual outlook.
- [NTSB CHI83LA040](https://openairdocs.org/ntsb/CHI83LA040.md): Piper 601P · Sheboygan, WI · Accident · Serious injuries · Limited investigation · Final report · Nov 18, 1982 · N6078U · Destroyed
  > The plt noticed haze in lights at destination but had excellent ground contact throughout the approach. At threshold he entered dense ground fog & lost all visual contact. The acft crashed during the go-around.
- [NTSB CHI79DEP72](https://openairdocs.org/ntsb/CHI79DEP72.md): Piper PA-32 · Lakewood, WI · Accident · No injuries · Closed · Aug 4, 1979 · N47420 · Substantial damage
- [NTSB CHI79FEP43](https://openairdocs.org/ntsb/CHI79FEP43.md): Piper PA-32R · Iola, WI · Accident · No injuries · Closed · Apr 13, 1979 · N9585C · 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 ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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