# NTSB investigations, WI: Landing gear system

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 CEN26LA262](https://openairdocs.org/ntsb/CEN26LA262.md): Beech F33A · Janesville, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 20, 2026 · N933A · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB CEN26LA025](https://openairdocs.org/ntsb/CEN26LA025.md): Piper PA-24-250 · Eau Claire, WI · Accident · No injuries · Class 4 · Limited · Final report · Oct 19, 2025 · N5865P · Substantial damage
  > The pilot’s failure to ensure that the landing gear was properly extended before landing. Contributing to the accident was the pilot’s unfamiliarity with the landing gear warning horn and failure to verify the gear was extended with the cockpit position…
- [NTSB CEN25LA293](https://openairdocs.org/ntsb/CEN25LA293.md): Piper PA-31T3 · Appleton, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 26, 2025 · N401VA · Substantial damage
  > The pilot’s failure to maintain control of the airplane on the ground, which resulted in a collision with a parked airplane.
- [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 CEN25LA278](https://openairdocs.org/ntsb/CEN25LA278.md): Ravin 500 · Oshkosh, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 21, 2025 · C-GPDZ · Substantial damage
  > The failure of the left main landing gear lateral pushrod end fitting which resulted in a landing gear collapse during the landing roll.
- [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 CEN24LA330](https://openairdocs.org/ntsb/CEN24LA330.md): Esqual VM1 · Oshkosh, WI · Accident · No injuries · Class 4 · Limited · Final report · Aug 27, 2024 · N151GH · Substantial damage
  > The pilot’s premature rotation during takeoff which resulted in the airplane settling back to the runway and the subsequent separation of the left wheel.
- [NTSB CEN24LA288](https://openairdocs.org/ntsb/CEN24LA288.md): Piper PA-28R-180 · Ft. Atkinson, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 27, 2024 · N980BL · Substantial damage
  > The pilot’s failure to extend the landing gear before landing due to distractions and his failure to conduct the Before Landing checklist.
- [NTSB CEN24LA082](https://openairdocs.org/ntsb/CEN24LA082.md): Cessna 172N · Middleton, WI · Accident · No injuries · Class 3 · Limited · Final report · Jan 4, 2024 · N3477E · Substantial damage
  > The student pilot’s failure to maintain directional control during the takeoff roll.
- [NTSB CEN22LA188](https://openairdocs.org/ntsb/CEN22LA188.md): Beech B-99 · Milwaukee, WI · Accident · No injuries · Class 3 · Limited · Final report · Apr 30, 2022 · N699CZ · Substantial damage
  > A right main landing gear collapse due to fatigue failure of the landing gear drag leg support fitting.
- [NTSB CEN21LA407](https://openairdocs.org/ntsb/CEN21LA407.md): Aeromot AMT-100 · Menomonie, WI · Accident · No injuries · Class 4 · Limited · Final report · Sep 7, 2021 · N69FW · Substantial damage
  > The pilot’s failure to extend the landing gear.
- [NTSB CEN21LA147](https://openairdocs.org/ntsb/CEN21LA147.md): Piper PA-23 · Oshkosh, WI · Accident · No injuries · Class 3 · Limited · Final report · Feb 27, 2021 · N1460P · Substantial damage
  > The failure of the nose landing gear lower drag link for reasons that could not be determined based on available information, which resulted in the collapse of the nose landing gear.
- [NTSB GAA19CA218](https://openairdocs.org/ntsb/GAA19CA218.md): Cessna 180 · Reedsburg, WI · Accident · No injuries · Data collection · Final report · Apr 20, 2019 · N59DW · Substantial damage
  > The pilot's loss of directional control and subsequent improper brake application during the landing roll, which resulted in a nose-over.
- [NTSB CEN18LA360](https://openairdocs.org/ntsb/CEN18LA360.md): Stearman A75N1(PT17) · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Aug 31, 2018 · N64604 · Substantial damage
  > The failed retaining bolt and cracked backing plate, which resulted in a shift of the brake lining to contact the brake drum and a subsequent wheel lock when the brakes were applied.
- [NTSB GAA18CA432](https://openairdocs.org/ntsb/GAA18CA432.md): Piper PA28 · Oregon, WI · Accident · No injuries · Data collection · Final report · Jul 19, 2018 · N9267H · Substantial damage
  > The pilot's improper decision to take off with a known brake malfunction, which resulted in a collision with a barn during landing on a wet runway.
- [NTSB GAA18CA171](https://openairdocs.org/ntsb/GAA18CA171.md): Beech 76 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Mar 9, 2018 · N969RA · Substantial damage
  > The pilot’s failure to extend the landing gear and the flight instructor’s failure to ensure that the landing gear were extended during landing. Contributing to the accident were the pilot’s and the instructor’s improper use of checklist.
- [NTSB GAA17CA524](https://openairdocs.org/ntsb/GAA17CA524.md): Boeing A75N1(PT17) · Oshkosh, WI · Accident · Minor injuries · Data collection · Final report · Sep 3, 2017 · N52813 · Substantial damage
  > The pilot’s overapplication of the brakes, which resulted in the biplane coming to rest inverted.
- [NTSB GAA17CA224](https://openairdocs.org/ntsb/GAA17CA224.md): Stinson 108 · Woodruff, WI · Accident · No injuries · Data collection · Final report · Apr 7, 2017 · N9363K · Substantial damage
  > The pilot receiving instruction's incorrect brake usage and failure to maintain directional control during the landing roll.
- [NTSB CEN16LA274](https://openairdocs.org/ntsb/CEN16LA274.md): Chance Vought F4U 5 · East Troy, WI · Accident · No injuries · Limited investigation · Final report · Jul 19, 2016 · N179PT · Substantial damage
  > A failure of the O-ring in the left brake master cylinder for reasons that could not be determined, which resulted in a loss of directional control during landing.
- [NTSB CEN15CA072](https://openairdocs.org/ntsb/CEN15CA072.md): Cubcrafters CC11-160 · Middleton, WI · Accident · Minor injuries · Data collection · Final report · Dec 6, 2014 · N471LS · Substantial damage
  > The pilot's failure to maintain control of the airplane while braking during landing rollout.
- [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 CEN13CA187](https://openairdocs.org/ntsb/CEN13CA187.md): Champion 7GCAA · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Feb 2, 2013 · N9691S · Substantial damage
  > Fatigue cracking and failure of the left wheel strut mount resulting in collapse of the left main landing gear during taxi.
- [NTSB CEN12CA567](https://openairdocs.org/ntsb/CEN12CA567.md): Fantasy Air Allegro 2000 · Bear Creek, WI · Accident · No injuries · Data collection · Final report · Aug 17, 2012 · N5064E · Substantial damage
  > A malfunction of the right brake for reasons that could not be determined because of the perishable evidence, which resulted in the pilot’s inability to maintain directional control of the airplane during landing.
- [NTSB CEN12CA406](https://openairdocs.org/ntsb/CEN12CA406.md): Piper PA-24 · Watertown, WI · Accident · No injuries · Data collection · Final report · Jul 1, 2012 · N6580P · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB CEN11LA632](https://openairdocs.org/ntsb/CEN11LA632.md): Piper/Cub Crafters PA-18-150 · Long Lake, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 8, 2011 · N902CC · Substantial damage
  > The pilot's failure to complete the prelanding checklist, which resulted in the landing gear wheels not being retracted for the water landing.
- [NTSB CEN11LA536](https://openairdocs.org/ntsb/CEN11LA536.md): Bellanca 14-13 · Stoughton, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 2011 · N74260 · Substantial damage
  > The pilot’s improper preflight planning and his failure to gain proper airspeed during takeoff from a grass airstrip resulting in a stall, the loss of control, and subsequent impact with the trees. Contributing to the accident was the pilot operating the…
- [NTSB CEN11CA523](https://openairdocs.org/ntsb/CEN11CA523.md): Cessna 195 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Jul 28, 2011 · N195SM · Substantial damage
  > The failure of the left brake which resulted in a ground-loop.
- [NTSB CEN11IA379](https://openairdocs.org/ntsb/CEN11IA379.md): Bombardier CL-600-2B19 · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Jun 7, 2011 · N866AS · Minor damage
  > The failure of the right main landing gear (MLG) to extend normally, which resulted from the combination of a slightly worn uplock pin, the operation of the hydraulic pumps below their specified operating pressures, and contamination within the landing gear…
- [NTSB ENG10IA055](https://openairdocs.org/ntsb/ENG10IA055.md): Bombardier CL600 2B19 · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Sep 28, 2010 · N498CA · Minor damage
  > The failure of the left main landing gear (MLG) to extend normally and manually for reasons that could not be conclusively determined.
- [NTSB CHI08LA297](https://openairdocs.org/ntsb/CHI08LA297.md): Powrachute Pegasus · New London, WI · Accident · Serious injuries · Limited investigation · Final report · Sep 20, 2008 · N7084L · Minor damage
  > The pilot's loss of directional control during landing due to failure of the nose wheel support as a result of an inadequate weld.
- [NTSB CHI08LA214](https://openairdocs.org/ntsb/CHI08LA214.md): Bolenbaugh Phillip William Rans S-6ES · Oshkosh, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 27, 2008 · N402PB · Substantial damage
  > The pilot's improper landing flare, which resulted in a hard landing and subsequent collapse of the nose landing gear.
- [NTSB CHI08CA130](https://openairdocs.org/ntsb/CHI08CA130.md): Cessna 150 · Pulaski, WI · Accident · No injuries · Data collection · Final report · May 14, 2008 · N22997 · Substantial damage
  > The student pilot's failure to take remedial action in response to a porpoise/pilot-induced oscillation during landing. Factors were the porpoise, the pilot's lack of experience, and the separation of the nose landing gear.
- [NTSB CHI08CA076](https://openairdocs.org/ntsb/CHI08CA076.md): American AA-1A · Grantsburg, WI · Accident · No injuries · Data collection · Final report · Feb 6, 2008 · N9483L · Substantial damage
  > The seizure of the left brake due to a buildup of ice between the rotor and brake pad. Contributing to the accident was the snow and slush covered runway, and the snowbank.

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '010232'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/010232/cases?state=WI

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