# NTSB investigations, WI: Landing gear collapse

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 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 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 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 CEN18TA296](https://openairdocs.org/ntsb/CEN18TA296.md): Fisher Dakato Hawk · Oshkosh, WI · Accident · No injuries · Final report · Jul 26, 2018 · N677TS · Substantial damage
  > The failure of the left main landing gear for reasons that could not be determined, which resulted in a loss of directional control during the ground roll.
- [NTSB CEN15LA351](https://openairdocs.org/ntsb/CEN15LA351.md): Roberts Bruce W Vans Aircraft RV 9A · Land O' Lakes, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 19, 2015 · N142DD · Substantial damage
  > The pilot’s failure to maintain a proper descent rate, which resulted in a hard landing.
- [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 CEN10LA145](https://openairdocs.org/ntsb/CEN10LA145.md): Hawker Beechcraft A36 · Milwaukee, WI · Accident · No injuries · Limited investigation · Final report · Mar 6, 2010 · N1114X · Substantial damage
  > The pilot's retraction of the landing gear prior to establishing a positive climb rate.
- [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.

## 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 e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '094')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/094/cases?state=WI

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