# NTSB investigations, IL: 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 CEN15LA147](https://openairdocs.org/ntsb/CEN15LA147.md): Piper PA 31-350 · Chicago, IL · Accident · No injuries · Limited investigation · Final report · Feb 16, 2015 · N727SC · Substantial damage
  > The collapse of the nose and right main landing gears during landing for reasons that could not be determined because examination of the landing gear system revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.
- [NTSB CEN14CA352](https://openairdocs.org/ntsb/CEN14CA352.md): Beech 35 33 · Mt. Vernon, IL · Accident · No injuries · Data collection · Final report · Jul 5, 2014 · N891R · Substantial damage
  > The pilot's failure to ensure the landing gear was extended into the fully locked position.
- [NTSB CEN14LA127](https://openairdocs.org/ntsb/CEN14LA127.md): Piaggio P180 - Avanti II · Springfield, IL · Accident · No injuries · Limited investigation · Final report · Jan 31, 2014 · N700FE · Substantial damage
  > The pilot's decision to reengage the hydraulic system following the successful extension of the landing gear using the emergency extension procedures. Contributing to the accident was the failure of the directional control valve in the gear-up position and…
- [NTSB CEN12LA456](https://openairdocs.org/ntsb/CEN12LA456.md): Piper PA-46-310P · Metropolis, IL · Accident · No injuries · Limited investigation · Final report · Jun 22, 2012 · N43840 · Substantial damage
  > Landing gear collapse for reasons that could not be determined because testing could not replicate the problem.
- [NTSB CEN11FA220](https://openairdocs.org/ntsb/CEN11FA220.md): Mooney M20J · Romeoville, IL · Accident · No injuries · Field investigation · Final report · Feb 19, 2011 · N888DF · Substantial damage
  > The collapse of the left main landing gear during the landing roll for undetermined reasons.
- [NTSB CEN10LA506](https://openairdocs.org/ntsb/CEN10LA506.md): Ashcraft DR107 · Aurora, IL · Accident · No injuries · Limited investigation · Final report · Aug 21, 2010 · N123TA · Substantial damage
  > The low cycle fatigue failure of the tail wheel spring during landing.
- [NTSB CEN10LA143](https://openairdocs.org/ntsb/CEN10LA143.md): Beech 65-A90 · DeKalb, IL · Accident · No injuries · Limited investigation · Final report · Mar 2, 2010 · N129LA · Substantial damage
  > The collapse of the landing gear during landing due to the company's improper maintenance practices and the pilot's decision to take off with an overextended landing gear strut.
- [NTSB ENG08IA042](https://openairdocs.org/ntsb/ENG08IA042.md): Boeing 737 · Chicago, IL · Incident · Incident investigation · Final report · Oct 1, 2008 · N551WN · Minor damage
  > The right nose landing gear axle's failure from intergranular and fatigue cracking due to an earlier bearing failure.
- [NTSB CHI08CA179](https://openairdocs.org/ntsb/CHI08CA179.md): Cessna 195 · Lansing, IL · Accident · No injuries · Data collection · Final report · Jul 2, 2008 · N4408C · Substantial damage
  > The pilot's inadequate compensation for the gusting crosswind condition during landing. Contributing to the accident was the strong gusting crosswind condition.
- [NTSB CHI08LA070](https://openairdocs.org/ntsb/CHI08LA070.md): Beech 58 · Cahokia, IL · Accident · No injuries · Limited investigation · Final report · Jan 23, 2008 · N4626A · Substantial damage
  > Maintenance personnel's improper replacement of the landing gear leg brace assembly which subsequently failed to keep the landing gear in the locked position.

## 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" = 'IL' 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=IL

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