# NTSB investigations: Continental IO-520 series: 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 ANC26LA032](https://openairdocs.org/ntsb/ANC26LA032.md): Cessna A185F · Aniak, AK · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 24, 2026 · N92DC · Substantial damage
  > On April 24, 2026, about 1045 Alaska daylight time, a wheel/ski-equipped Cessna 185 airplane, N92DC, was substantially damaged in an accident at Aniak Airport (ANI), Aniak, Alaska. The pilot and one passenger were not injured. The flight was being operated as…
- [NTSB ERA26LA173](https://openairdocs.org/ntsb/ERA26LA173.md): Beech 58 · Stevensville, MD · Accident · No injuries · Class 4 · Limited · Final report · Apr 11, 2026 · N38020 · Substantial damage
  > The pilot’s inadvertent retraction of the landing gear lever during the landing roll, which resulted in a gear collapse and runway excursion.
- [NTSB ERA26LA117](https://openairdocs.org/ntsb/ERA26LA117.md): Beech V35 · Gulf Shores, AL · Accident · No injuries · Class 4 · Limited · Final report · Feb 17, 2026 · N35KA · Substantial damage
  > The pilot’s failure to establish a positive rate of climb before retracting the landing gear, which resulted in abnormal runway contact during the takeoff roll.
- [NTSB CEN25LA126](https://openairdocs.org/ntsb/CEN25LA126.md): Beech V35 · Engelwood, CO · Accident · No injuries · Class 3 · Limited · Preliminary report · Mar 16, 2025 · N7987R · Substantial damage
  > On March 16, 2025, at 1741 mountain daylight time, a Beech V35 airplane, N7987R, was substantially damaged when it was involved in an accident near Englewood, Colorado. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB ERA24LA376](https://openairdocs.org/ntsb/ERA24LA376.md): Beech 58 · Raleigh, NC · Accident · No injuries · Class 4 · Limited · Final report · Sep 8, 2024 · N6037M · Substantial damage
  > Damage to the landing gear selector switch wire bundle which resulted in an inadvertent retraction of the landing gear during the takeoff roll.
- [NTSB WPR23LA350](https://openairdocs.org/ntsb/WPR23LA350.md): Cessna U206C · Challis, ID · Accident · No injuries · Class 3 · Limited · Final report · Sep 20, 2023 · N3923G · Substantial damage
  > The failure of the left main landing gear spring assembly due to a fatigue crack. Contributing to the accident was the improper maintenance on the landing gear spring assembly which allowed corrosion to develop.
- [NTSB ERA23LA154](https://openairdocs.org/ntsb/ERA23LA154.md): Cessna 310R · Lexington, KY · Accident · No injuries · Class 3 · Limited · Final report · Dec 15, 2022 · N3844C · Substantial damage
  > A main landing gear collapse due to a landing gear actuator overtravel for reasons that could not be determined.
- [NTSB WPR22LA124](https://openairdocs.org/ntsb/WPR22LA124.md): Cessna 310R · McGrath, AK · Accident · No injuries · Class 3 · Limited · Final report · Mar 10, 2022 · N3UR · Substantial damage
  > A failure of the right main landing gear bellcrank lower arm fork, bellcrank, pivot bolt, and trunnion bellcrank lug for undetermined reasons.
- [NTSB ERA22LA005](https://openairdocs.org/ntsb/ERA22LA005.md): Cessna 210 · Columbia, SC · Accident · No injuries · Class 4 · Limited · Final report · Oct 5, 2021 · N6318B · Substantial damage
  > A failure of the landing gear hydraulic power pack for reasons that could not be determined.
- [NTSB ERA21LA319](https://openairdocs.org/ntsb/ERA21LA319.md): Beech F33A · Oxford, CT · Accident · No injuries · Class 4 · Limited · Final report · Aug 7, 2021 · N4114S · Substantial damage
  > The inadvertent operation of the landing handle during the landing roll, which resulted in a nose gear retraction and subsequent collision with the runway.
- [NTSB WPR20CA213](https://openairdocs.org/ntsb/WPR20CA213.md): Beech 33 · Redmond, OR · Accident · No injuries · Class 4 · Data collection · Final report · Jul 6, 2020 · N727P · Substantial damage
  > The left seated flight instructor’s improper manipulation of the landing gear position selection lever to the up position while still on the landing roll, which ultimately resulted in a landing gear collapse during a subsequent landing.
- [NTSB WPR20CA183](https://openairdocs.org/ntsb/WPR20CA183.md): Cessna 310 · Butte, MT · Accident · No injuries · Class 4 · Data collection · Final report · Jun 15, 2020 · N87395 · Substantial damage
  > The pilot's failure to maintain clearance from a fence post during final approach which resulted in a damage to the left main landing gear, and its subsequent collapse during landing.
- [NTSB ERA19CA291](https://openairdocs.org/ntsb/ERA19CA291.md): Beech 55 · Sebring, FL · Accident · No injuries · Data collection · Final report · Sep 13, 2019 · N854T · Substantial damage
  > The passenger’s inadvertent retraction of the landing gear during the landing roll without being instructed to do so by the pilot.
- [NTSB ERA19TA067](https://openairdocs.org/ntsb/ERA19TA067.md): Beech A36 · Summerland Key, FL · Accident · No injuries · Class 3 · Final report · Nov 23, 2018 · N41VK · Substantial damage
  > The pilot’s inadvertent retraction of the landing gear during landing rollout, resulting in a landing gear collapse.
- [NTSB ANC18LA043](https://openairdocs.org/ntsb/ANC18LA043.md): Cessna 210 · Ramona, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 1, 2018 · N9410M · Substantial damage
  > The failure of the engine-driven hydraulic pump due to the installation of improper cap screws, which resulted in a gap in the pump housing, a subsequent hydraulic leak, and the landing gear collapsing.
- [NTSB CEN18LA128](https://openairdocs.org/ntsb/CEN18LA128.md): Cessna 310R · Kansas City, MO · Accident · No injuries · Limited investigation · Final report · Mar 22, 2018 · N372WP · Substantial damage
  > The landing gear collapse due to the separation of the end fitting bolt for reasons that could not be determined based on the available evidence.
- [NTSB WPR16LA015](https://openairdocs.org/ntsb/WPR16LA015.md): Cessna 310J · Tucson, AZ · Accident · No injuries · Limited investigation · Final report · Oct 10, 2015 · N3123L · Substantial damage
  > The insufficient right main landing gear (MLG) down-lock tension due to maintenance personnel's failure to perform a rigging procedure during the airplane's most recent inspection, which resulted in the right MLG collapsing during landing.
- [NTSB CEN15LA415](https://openairdocs.org/ntsb/CEN15LA415.md): Beech 58 · Gary, IN · Accident · No injuries · Limited investigation · Final report · Sep 11, 2015 · N4199S · Substantial damage
  > The pilot’s failure to ensure that the landing gear was down while on short final, his subsequent failure to conduct a go-around, and his loss of situational awareness of the airplane’s altitude above the runway while landing.
- [NTSB ERA13LA398](https://openairdocs.org/ntsb/ERA13LA398.md): Cessna 210J · Fort Myers, FL · Accident · No injuries · Limited investigation · Final report · Sep 5, 2013 · N210WS · Substantial damage
  > The failure of the landing gear hydraulic power pack system to provide sufficient pressure to lock the main landing gear in the down position. Contributing to the accident was the improper maintenance and inspection of the landing gear system, the pilot’s…
- [NTSB WPR13LA319](https://openairdocs.org/ntsb/WPR13LA319.md): Cessna T210K · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Jul 4, 2013 · N272EF · Substantial damage
  > The collapse of the left main landing gear due to a broken gear tooth in the landing gear actuator.
- [NTSB ANC13CA038](https://openairdocs.org/ntsb/ANC13CA038.md): Beech A36 · Port Alsworth, AK · Accident · No injuries · Data collection · Final report · Apr 15, 2013 · N1820L · Substantial damage
  > The failure of the left main landing gear retraction brace assembly, resulting in the collapse of the left main landing gear.
- [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 WPR11CA468](https://openairdocs.org/ntsb/WPR11CA468.md): Beech 36 · Riverton, WY · Accident · No injuries · Data collection · Final report · Sep 24, 2011 · N7549N · Substantial damage
  > The pilot's inadvertent retraction of the landing gear during the landing roll.
- [NTSB ANC11CA018](https://openairdocs.org/ntsb/ANC11CA018.md): Cessna A185F · Aniak, AK · Accident · No injuries · Data collection · Final report · Mar 19, 2011 · N5182H · Substantial damage
  > The inadvertent contact with a rut in the snow while taxiing, resulting in the collapse of the right main landing gear.
- [NTSB ERA11LA191](https://openairdocs.org/ntsb/ERA11LA191.md): Cessna 414 · New York, NY · Accident · No injuries · Limited investigation · Final report · Mar 14, 2011 · N40NY · Substantial damage
  > The improper rigging of the right main landing gear, which resulted in ovestress fractures of a bolt and aft lug on the trunnion assembly.
- [NTSB WPR10LA347](https://openairdocs.org/ntsb/WPR10LA347.md): Beech E-55 · Las Vegas, NV · Accident · No injuries · Limited investigation · Final report · Jul 3, 2010 · N3644A · Substantial damage
  > The landing gear collapse for undetermined reasons.
- [NTSB WPR10LA140](https://openairdocs.org/ntsb/WPR10LA140.md): Cessna 210L · Aurora, OR · Accident · No injuries · Limited investigation · Final report · Feb 18, 2010 · N777FW · Substantial damage
  > The failure of the landing gear to properly function for undetermined reasons, resulting in the right main landing gear collapsing during landing. Contributing to the accident was the pilot's failure to follow the emergency gear extension procedure.
- [NTSB CEN09CA356](https://openairdocs.org/ntsb/CEN09CA356.md): Beech A36 · Charleston, MO · Accident · No injuries · Data collection · Final report · Mar 20, 2009 · N451S · Substantial damage
  > The pilot's inadvertent use of the landing gear selector handle instead of the flap handle during landing rollout, which resulted in the collapse of the nose landing gear.
- [NTSB MIA08LA185](https://openairdocs.org/ntsb/MIA08LA185.md): Bellanca 17-30A · Sparta, TN · Accident · No injuries · Limited investigation · Final report · Sep 6, 2008 · N9792E · Substantial damage
  > Failure of the nose landing gear mount during a normal landing due to an improper weld.
- [NTSB MIA08LA066](https://openairdocs.org/ntsb/MIA08LA066.md): Cessna 210L · Tampa, FL · Accident · No injuries · Limited investigation · Final report · Feb 27, 2008 · N5489V · Substantial damage
  > The malfunction of the right main landing gear down-and-locked switch.
- [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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17032')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND 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?engine=17032

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