# NTSB investigations: Lycoming TI0-540 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 CEN26LA263](https://openairdocs.org/ntsb/CEN26LA263.md): Piper PA24 · Baraboo, WI · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jul 16, 2026 · N8606P · Substantial damage
  > On July 16, 2026, about 1508 central daylight time, a Piper PA-24-260 airplane, N8606P, sustained substantial damage when it was involved in an accident near Baraboo, Wisconsin. The pilot sustained serious injuries. The airplane was operated as a Title 14…
- [NTSB CEN25LA220](https://openairdocs.org/ntsb/CEN25LA220.md): Piper PA-24-260 · Ashland, WI · Accident · No injuries · Class 4 · Limited · Final report · Jun 24, 2025 · N8817P · Substantial damage
  > The pilot’s failure to extend the landing gear before landing and his failure to conduct the before landing checklist.
- [NTSB GAA15CA287](https://openairdocs.org/ntsb/GAA15CA287.md): Piper PA 24 · West Bend, WI · Accident · No injuries · Data collection · Final report · Sep 26, 2015 · N8583P · Substantial damage
  > The pilot's failure to maintain his descent rate during the landing, which resulted in a hard landing and runway excursion.
- [NTSB CEN15LA333](https://openairdocs.org/ntsb/CEN15LA333.md): Cessna 182 · Watertown, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 2015 · N1685R · Substantial damage
  > The total loss of engine power due to carburetor icing.
- [NTSB CEN13FA351](https://openairdocs.org/ntsb/CEN13FA351.md): Piper PA-24-260 · La Pointe, WI · Accident · 2 fatal · Field investigation · Final report · Jun 15, 2013 · N8815P · Destroyed
  > The pilot’s failure to maintain airplane control after deciding to go around after a gear-up landing, resulting in an aerodynamic stall.
- [NTSB CHI08FA054](https://openairdocs.org/ntsb/CHI08FA054.md): Piper PA-32R-300 · Warrens, WI · Accident · 1 fatal · Field investigation · Final report · Dec 21, 2007 · N1919H · Destroyed
  > The decision by the pilot to fly into known adverse weather, and the pilot's failure to maintain control of the airplane due to spatial disorientation. Contributing factors include the clouds and the night conditions.
- [NTSB CHI05CA275](https://openairdocs.org/ntsb/CHI05CA275.md): Cessna T206H · Sturgeon Bay, WI · Accident · No injuries · Data collection · Final report · Sep 27, 2005 · N206WK · Substantial damage
  > The unexpected wave that the airplane encountered during the landing flare.
- [NTSB CHI02LA019](https://openairdocs.org/ntsb/CHI02LA019.md): Piper PA-32-301T · Phillips, WI · Accident · No injuries · Limited investigation · Final report · Nov 4, 2001 · N82813 · Substantial damage
  > The fuel starvation encountered on takeoff and unsuitable terrain the pilot encountered during the forced landing. A factor was the fuel selector valve malfunction.
- [NTSB CHI01LA174](https://openairdocs.org/ntsb/CHI01LA174.md): Smith Aerostar 600 · Wonewoc, WI · Accident · No injuries · Limited investigation · Final report · Jun 14, 2001 · N7484S · Substantial damage
  > The deer on the runway as the airplane was landing.
- [NTSB CHI99LA316](https://openairdocs.org/ntsb/CHI99LA316.md): Piper PA-23-250 · Osceola, WI · Accident · No injuries · Limited investigation · Final report · Aug 28, 1999 · N6592Y · Substantial damage
  > the pilot's improper preflight decision to attempt a takeoff with one engine inoperative.
- [NTSB CHI96LA335](https://openairdocs.org/ntsb/CHI96LA335.md): Piper PA-31 · Janesville, WI · Accident · No injuries · Limited investigation · Final report · Sep 13, 1996 · N27299 · Substantial damage
  > fuel exhaustion as a result of an inadequate preflight by the pilot in command.
- [NTSB CHI96FA113](https://openairdocs.org/ntsb/CHI96FA113.md): Piper PA-32 · Milwaukee, WI · Accident · 1 fatal · Field investigation · Final report · Jan 17, 1996 · N3326Q · Destroyed
  > Inadequate maintenance and inspection in that the Airworthiness Directive which applied to the fuel pump had not been complied with. A factor was the pilot was unable to reach land.
- [NTSB CHI91LA299](https://openairdocs.org/ntsb/CHI91LA299.md): Piper PA-23-250 · Boscobel, WI · Accident · No injuries · Limited investigation · Final report · Sep 20, 1991 · N915PM · Substantial damage
  > Improper remedial action by the pilot-in-command (PIC), and inadequate monitoring by the designated pilot examiner (DPE) during a simulated emergency procedure. Factors related to the accident were: the loss of power in one engine due to an undetermined…
- [NTSB CHI85LA286](https://openairdocs.org/ntsb/CHI85LA286.md): Piper PA-32R-300 · Appleton, WI · Accident · No injuries · Limited investigation · Final report · Jul 14, 1985 · N4137F · Substantial damage
  > As the plt applied brakes during a full stop landing, the right brake failed. The plt then maneuvered the acft off the paved landing surface in an attempt to get it to roll to a stop. The right landing gear strut collapsed. The acft then slid into a fence and…
- [NTSB CHI85LA216](https://openairdocs.org/ntsb/CHI85LA216.md): Piper PA-32T-300 · Milwaukee, WI · Accident · No injuries · Limited investigation · Final report · May 19, 1985 · N39628 · Substantial damage
  > The pilot stated that the approach was normal and flown at 90 KIAS. He flared high and the acft landed hard on the right main landing gear, due to the excessive rate of decent. The damage was limited to the right wing spar and ribs.
- [NTSB CHI84LA154](https://openairdocs.org/ntsb/CHI84LA154.md): Piper PA-24-260 · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Apr 15, 1984 · N8667P · Substantial damage
  > The plt stated he mistook the ATIS reported winds of 020 deg at 21 KTS as 210 deg at 20 KTS. After executing the VOR rwy 14 apch, he continued to land on rwy 14. There was standing water on the rwy. While landing with a tail wind, the acft hydroplaned & ran…
- [NTSB CHI82FA157](https://openairdocs.org/ntsb/CHI82FA157.md): Piper PA-32-300 · Milwaukee, WI · Accident · Minor injuries · Field investigation · Final report · May 9, 1982 · N6837J · Substantial damage
  > Engine failure forced pilot to land in an open plowed field. Aircraft collided with wires but a successful landing was made. Oil pump gear tooth had failed.
- [NTSB CHI81DER40](https://openairdocs.org/ntsb/CHI81DER40.md): Piper PA-32 · Crivitz, WI · Accident · Minor injuries · Closed · Sep 14, 1981 · N39628 · Substantial damage
- [NTSB CHI81FA024](https://openairdocs.org/ntsb/CHI81FA024.md): Piper PA-32 · Lyons Twp, WI · Accident · 1 fatal · Closed · Feb 2, 1981 · N300AC · Destroyed
- [NTSB CHI79FEP27](https://openairdocs.org/ntsb/CHI79FEP27.md): Piper PA-32 · Dodgeville, WI · Accident · No injuries · Closed · May 17, 1979 · N6256J · Substantial damage
- [NTSB CHI78FEP41](https://openairdocs.org/ntsb/CHI78FEP41.md): Piper PA-32 · Lakewood, WI · Accident · No injuries · Closed · Jul 8, 1978 · N5524F · Substantial damage
- [NTSB CHI77FEP39](https://openairdocs.org/ntsb/CHI77FEP39.md): Piper PA-32 · Madison, WI · Accident · No injuries · Closed · Jun 17, 1977 · N15635 · Substantial damage
- [NTSB CHI77DEP36](https://openairdocs.org/ntsb/CHI77DEP36.md): Piper PA-32 · Clam Lake, WI · Accident · Minor injuries · Closed · Jun 2, 1977 · N8383C · Substantial damage
- [NTSB CHI77FA046](https://openairdocs.org/ntsb/CHI77FA046.md): Piper PA-24 · Evansville, WI · Accident · 4 fatal · Closed · May 27, 1977 · N9326P · Destroyed
- [NTSB CHI77FEP10](https://openairdocs.org/ntsb/CHI77FEP10.md): Beech C55 · Eau Claire, WI · Accident · Serious injuries · Closed · Dec 9, 1976 · N551U · Substantial damage
- [NTSB CHI77FEP07](https://openairdocs.org/ntsb/CHI77FEP07.md): Piper PA-32R · Ashippun, WI · Accident · No injuries · Closed · Nov 27, 1976 · N6273J · Substantial damage
- [NTSB CHI76DEP44](https://openairdocs.org/ntsb/CHI76DEP44.md): Piper PA-24 · La Crosse, WI · Accident · No injuries · Closed · Aug 18, 1976 · N9390P · Substantial damage
- [NTSB NYC75DEP45](https://openairdocs.org/ntsb/NYC75DEP45.md): Piper PA-32 · Lake Geneva, WI · Accident · No injuries · Closed · Mar 1, 1975 · N8502N · Substantial damage
- [NTSB CHI71FDJ45](https://openairdocs.org/ntsb/CHI71FDJ45.md): Piper PA-23 · Watertown, WI · Accident · No injuries · Closed · Mar 4, 1971 · N5554Y · Substantial damage
- [NTSB CHI70D0153](https://openairdocs.org/ntsb/CHI70D0153.md): Piper PA-23 · Iola, WI · Accident · No injuries · Closed · Jul 31, 1969 · N6708Y · Destroyed
- [NTSB CHI67D0349](https://openairdocs.org/ntsb/CHI67D0349.md): Piper PA-24 · Delavan, WI · Accident · No injuries · Closed · Oct 31, 1966 · N8952P · 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 ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41533&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.