# NTSB investigations: Landing gear actuator

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.

Page 1 of 2 · 54 cases

## Latest cases

- [NTSB ERA26LA043](https://openairdocs.org/ntsb/ERA26LA043.md): Beech 95-B55 · Dothan, AL · Accident · No injuries · Class 4 · Limited · Final report · Nov 14, 2025 · N711FA · Substantial damage
  > The failure of the left main landing gear actuator rods, which resulted in a gear up landing.
- [NTSB WPR24LA126](https://openairdocs.org/ntsb/WPR24LA126.md): Cessna P210N · Auburn, WA · Accident · No injuries · Class 3 · Limited · Final report · Apr 11, 2024 · N806RC · Substantial damage
  > An overstress fracture of the left main landing gear actuator, which resulted in the failure of the left main landing gear to fully extend and lock into place.
- [NTSB ERA24LA170](https://openairdocs.org/ntsb/ERA24LA170.md): Beta Biz LX7 · Huntsville, AL · Accident · No injuries · Class 4 · Limited · Final report · Mar 30, 2024 · N222MA · Substantial damage
  > The failure of the nose landing gear actuator forward hydraulic fitting, which resulted in a main landing gear collapse during landing due to the loss of hydraulic fluid and pressure.
- [NTSB ERA24LA138](https://openairdocs.org/ntsb/ERA24LA138.md): Piper PA24 · Stafford, VA · Accident · No injuries · Class 4 · Limited · Final report · Mar 7, 2024 · N6339P · Substantial damage
  > An overloading of the landing gear push/pull cable rod ends, which resulted in the landing gear being seized in an intermediate position during the subsequent landing.
- [NTSB CEN24LA018](https://openairdocs.org/ntsb/CEN24LA018.md): Cessna 210B · Pueblo, CO · Accident · No injuries · Class 3 · Limited · Final report · Oct 18, 2023 · N9597X · Substantial damage
  > The fatigue failure of the right main landing gear hydraulic actuator, which resulted in a loss of hydraulic fluid that prevented the pilot from lowering the landing gear to the fully extended position.
- [NTSB WPR23LA213](https://openairdocs.org/ntsb/WPR23LA213.md): Cessna 210 · Tacoma, WA · Accident · No injuries · Class 3 · Limited · Final report · May 30, 2023 · N9574X · Substantial damage
  > A fatigue failure of the left main landing gear hydraulic actuator, which resulted in a loss of hydraulic fluid that prevented the pilot from lowering the landing gear to the fully extended position and maintaining directional control after landing.
- [NTSB WPR23LA012](https://openairdocs.org/ntsb/WPR23LA012.md): Cessna T210L · Marana, AZ · Accident · No injuries · Class 3 · Limited · Final report · Oct 10, 2022 · N2425S · Substantial damage
  > A failure of a retaining ring in the airplane’s left main landing gear door actuator and the subsequent complete loss of hydraulic fluid, which resulted in a gear-up landing.
- [NTSB WPR22LA226](https://openairdocs.org/ntsb/WPR22LA226.md): Cessna TR182 · Santa Barbara, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2022 · N738JZ · Substantial damage
  > A failure of the right main landing gear actuator pressure line O-ring, which resulted in a gear-up landing on the runway.
- [NTSB ERA22LA282](https://openairdocs.org/ntsb/ERA22LA282.md): Cessna 414 · Jasper, GA · Accident · No injuries · Class 3 · Limited · Final report · Jun 18, 2022 · N414HF · Substantial damage
  > The failure of the owner to comply with a service bulletin, which resulted in the failure of the left main landing gear torque tube due to fatigue cracking.
- [NTSB ERA22LA319](https://openairdocs.org/ntsb/ERA22LA319.md): Mooney M20J · Charleston, SC · Accident · No injuries · Class 4 · Limited · Final report · Jun 12, 2022 · N9158D · Substantial damage
  > The failure of the torsion spring inside the drive clutch assembly of the landing gear actuator which prevented normal and manual extension of the landing gear.
- [NTSB CEN22LA138](https://openairdocs.org/ntsb/CEN22LA138.md): Beech 200 · Gulfport, MS · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2022 · N8170J · Substantial damage
  > The failure of the right main landing gear actuator, which led to a gear-up landing.
- [NTSB ERA21LA146](https://openairdocs.org/ntsb/ERA21LA146.md): Cessna P210 · Bartow, FL · Accident · No injuries · Class 3 · Limited · Final report · Feb 20, 2021 · N210GE · Substantial damage
  > A leaking left main landing gear down lock actuator, which resulted in a loss of hydraulic fluid and a subsequent landing gear collapse during landing.
- [NTSB CEN20LA185](https://openairdocs.org/ntsb/CEN20LA185.md): Cessna 501 · Houston, TX · Accident · No injuries · Class 3 · Limited · Final report · May 20, 2020 · N501KM · Substantial damage
  > The malfunction of the left main landing gear down lock, which resulted in a gear collapse upon landing.
- [NTSB ERA20LA192](https://openairdocs.org/ntsb/ERA20LA192.md): Beech F90 · Knoxville, TN · Accident · No injuries · Class 3 · Limited · Final report · May 18, 2020 · N960V · Substantial damage
  > A failure of the left main landing gear scissors, which resulted in a landing gear collapse following a precautionary landing with the landing gear in an intermediate position..
- [NTSB ERA20LA008](https://openairdocs.org/ntsb/ERA20LA008.md): Raytheon Hawker · Fort Myers, FL · Accident · No injuries · Class 3 · Limited · Final report · Oct 8, 2019 · N86MN · Substantial damage
  > Maintenance personnel's improper installation of the nose landing gear assembly, which resulted in separation of the actuator arm and the failure of a nose landing gear to lock in place.
- [NTSB ERA19LA123](https://openairdocs.org/ntsb/ERA19LA123.md): Beech A100 · Latrobe, PA · Accident · No injuries · Class 3 · Limited · Final report · Mar 12, 2019 · N945WS · Substantial damage
  > A landing gear collapse due to the separation of the actuator pinion bearing support from the actuator, which resulted in the failure of the actuator shaft.
- [NTSB ANC18LA019](https://openairdocs.org/ntsb/ANC18LA019.md): Cessna 210 · Juneau, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 14, 2018 · N3607Y · Substantial damage
  > A loss of hydraulic fluid due to a fatigue failure of the right main landing gear hydraulic actuator, which resulted in the pilot's inability to fully extend the landing gear and a main landing gear collapse during the landing roll.
- [NTSB CEN17LA340](https://openairdocs.org/ntsb/CEN17LA340.md): Cessna 310G · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Sep 1, 2017 · N8957Z · Substantial damage
  > A collapse of the right main landing gear due to a bent pushrod, which precluded the gear from fully extending. The reason for the bent pushrod could not be determined based on the available information.
- [NTSB ERA17LA239](https://openairdocs.org/ntsb/ERA17LA239.md): Cessna 210L · Wilkes-Barre/Scranton, PA · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2017 · N732FJ · Substantial damage
  > Failure of the left landing gear door actuator, which resulted in a loss of all hydraulic pressure and subsequent gear collapse on landing.
- [NTSB CEN17LA148](https://openairdocs.org/ntsb/CEN17LA148.md): Cessna T210M · Detroit Lakes, MN · Accident · No injuries · Limited investigation · Final report · Apr 5, 2017 · N1215M · Substantial damage
  > The malfunction of the right main landing gear actuator for reasons that could not be determined because postaccident examination revealed no mechanical anomalies that would have precluded normal operation. Contributing to the accident was the improper…
- [NTSB CEN17IA155](https://openairdocs.org/ntsb/CEN17IA155.md): Cessna 172RG · Greeley, CO · Incident · No injuries · Incident investigation · Final report · Mar 20, 2017 · N6402V · Minor damage
  > Failure of the left main landing gear actuator assembly, which resulted in an inability to extend the left main landing gear.
- [NTSB ERA17LA105](https://openairdocs.org/ntsb/ERA17LA105.md): S C Aerostar S A YAK 52 · St. Elmo, AL · Accident · No injuries · Limited investigation · Final report · Feb 1, 2017 · N624PT · Substantial damage
  > The failure of the right main landing gear uplock actuator due to corrosion.
- [NTSB WPR17LA056](https://openairdocs.org/ntsb/WPR17LA056.md): Beech 99 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Jan 19, 2017 · N326CA · Substantial damage
  > The fatigue failure of the left main landing gear (MLG) actuator piston rod, which prevented the hydraulic system from producing pressure to control the MLG’s position and led to the right MLG collapsing during landing.
- [NTSB GAA16CA074](https://openairdocs.org/ntsb/GAA16CA074.md): Cessna 177 · Palm Springs, CA · Accident · No injuries · Data collection · Final report · Nov 14, 2015 · N2112Q · Substantial damage
  > The failure of a shaft seal at the nose gear retraction/extension actuator, which resulted in a loss of hydraulic fluid and a main landing gear collapse during landing.
- [NTSB ANC15LA048](https://openairdocs.org/ntsb/ANC15LA048.md): Cessna 210 · Juneau, AK · Accident · No injuries · Limited investigation · Final report · Jul 12, 2015 · N3607Y · Substantial damage
  > A loss of hydraulic fluid due to a fractured left main landing gear hydraulic actuator as a result of a fatigue crack, which led to the landing gear collapsing upon touchdown.
- [NTSB ERA15IA206](https://openairdocs.org/ntsb/ERA15IA206.md): Cessna 525B · Teterboro, NJ · Incident · No injuries · Incident investigation · Final report · May 3, 2015 · N784JS · Minor damage
  > The overstress fracture of the nose landing gear actuator (NLG) attachment lug during tow operations, which resulted in the collapse of the NLG.
- [NTSB WPR15LA038](https://openairdocs.org/ntsb/WPR15LA038.md): Cessna 210B · Bullhead City, AZ · Accident · No injuries · Limited investigation · Final report · Nov 8, 2014 · N9578X · Substantial damage
  > The failure of the landing gear actuator housing during landing for reasons that could not be determined based on the available evidence.
- [NTSB WPR14CA295](https://openairdocs.org/ntsb/WPR14CA295.md): Cessna R182 · El Monte, CA · Accident · No injuries · Data collection · Final report · Jul 18, 2014 · N7571T · Substantial damage
  > The failure of the right main landing gear pivot assembly. Contributing to the accident was the owner's failure to perform an inspection of the assembly in accordance with the manufacturer's service bulletin.
- [NTSB CEN14LA354](https://openairdocs.org/ntsb/CEN14LA354.md): Beech A36 · San Antonio, TX · Accident · No injuries · Limited investigation · Final report · Jul 1, 2014 · N136EL · Substantial damage
  > The failure of the landing gear retract rod.
- [NTSB DCA13FA148](https://openairdocs.org/ntsb/DCA13FA148.md): Beech 1900D · Telluride, CO · Accident · No injuries · Field investigation · Final report · Sep 1, 2013 · N169GL · Substantial damage
  > Failure of the left main landing gear actuator internal lock to engage in the locked position for undetermined reasons.
- [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 WPR13LA274](https://openairdocs.org/ntsb/WPR13LA274.md): Cessna T210L · Fresno, CA · Accident · No injuries · Limited investigation · Final report · Jun 16, 2013 · N94086 · Substantial damage
  > A hydraulic fluid leak in the nose landing gear actuator rod seal, which prevented the hydraulic system from building up sufficient pressure to fully retract or extend the main landing gear.
- [NTSB CEN13LA208](https://openairdocs.org/ntsb/CEN13LA208.md): Cessna 421C · Amarillo, TX · Accident · No injuries · Limited investigation · Final report · Mar 27, 2013 · N805DC · Substantial damage
  > Maintenance personnel's failure to detect the misadjustment of the left landing gear actuator's switch after recent maintenance, which prevented the landing gear from locking in the extended position and resulted in the landing gear collapsing during landing.
- [NTSB WPR13LA102](https://openairdocs.org/ntsb/WPR13LA102.md): Cessna 172RG · Redmond, OR · Accident · No injuries · Limited investigation · Final report · Jan 18, 2013 · N6290V · Substantial damage
  > Failure of the left main landing gear pivot assembly during the landing approach.
- [NTSB CEN13FA038](https://openairdocs.org/ntsb/CEN13FA038.md): Piaggio P180 · Boyne City, MI · Accident · No injuries · Field investigation · Final report · Oct 31, 2012 · N401WS · Substantial damage
  > The select/bypass valve's failure to seal correctly because of improper shimming, which resulted in an uncommanded and uncontrollable left turn during landing. Contributing to the accident was the overhaul facility's improper overhaul of the steering manifold.
- [NTSB CEN12LA672](https://openairdocs.org/ntsb/CEN12LA672.md): Socata TBM 700 · Horseshoe Bay, TX · Accident · No injuries · Limited investigation · Final report · Sep 7, 2012 · N850ZM · Substantial damage
  > The off-centered right main landing gear ball joint, which resulted in the right main landing gear collapsing during landing.
- [NTSB WPR12LA366](https://openairdocs.org/ntsb/WPR12LA366.md): Piper PA-30 B · Scappoose, OR · Accident · No injuries · Limited investigation · Final report · Aug 23, 2012 · N222BP · Substantial damage
  > The failure of the landing gear to fully extend as a result of a failure of the landing gear transmission assembly for reasons that could not be determined based on the available evidence.
- [NTSB CEN12LA300](https://openairdocs.org/ntsb/CEN12LA300.md): Cessna T210K · Midland, TX · Accident · No injuries · Limited investigation · Final report · May 9, 2012 · N727FA · Substantial damage
  > The failure of the right main landing gear to fully extend before landing due to a bent downlock adjustment screw.
- [NTSB CEN11CA640](https://openairdocs.org/ntsb/CEN11CA640.md): Cessna T210M · Cahokia, IL · Accident · No injuries · Data collection · Final report · Aug 25, 2011 · N44HR · Substantial damage
  > A failure of a spring in the main landing gear actuation system that prevented the landing gear from extending.
- [NTSB WPR11LA292](https://openairdocs.org/ntsb/WPR11LA292.md): Cessna 320F · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Jun 21, 2011 · N6160Q · Substantial damage
  > The mechanic's failure to properly secure the nose landing gear actuator push-pull tube to the landing gear door hinge clevis, which resulted in the gear jamming and not fully retracting after takeoff.
- [NTSB WPR11LA245](https://openairdocs.org/ntsb/WPR11LA245.md): Piper PA-46-310P · Lake Havasu, AZ · Accident · No injuries · Limited investigation · Final report · Jun 2, 2011 · N712MK · Substantial damage
  > The failure of the low pressure switch in the normal landing gear system, which prevented normal operation of that system, and the misrigging of the emergency extension gear release valve, which prevented the system from being depressurized to allow for the…
- [NTSB CEN11LA357](https://openairdocs.org/ntsb/CEN11LA357.md): Cessna T210M · Pueblo, CO · Accident · No injuries · Limited investigation · Final report · May 21, 2011 · N6850B · Substantial damage
  > Failure of the landing gear to fully extend due to a failed o-ring in the nose gear actuator piston and a broken seal in the emergency landing gear extension system.
- [NTSB CEN11IA341](https://openairdocs.org/ntsb/CEN11IA341.md): Beech 1900D · Denver, CO · Incident · No injuries · Incident investigation · Final report · May 17, 2011 · N218YV · Minor damage
  > The fatigue failure of the nose landing gear (NLG) end cap, which resulted in insufficient hydraulic pressure to secure the left main landing gear into the down and locked position. Contributing to the fatigue failure was the NLG end cap’s non-optimum grain…
- [NTSB ERA11LA239](https://openairdocs.org/ntsb/ERA11LA239.md): Beech BE99 · Cedartown, GA · Accident · No injuries · Limited investigation · Final report · Apr 10, 2011 · N899AE · Substantial damage
  > The failure of the left main landing gear bearings and supports due to inadequate lubrication by unknown maintenance personnel.
- [NTSB WPR11CA142](https://openairdocs.org/ntsb/WPR11CA142.md): Piper PA-31P-350 · North Bend, OR · Accident · No injuries · Data collection · Final report · Feb 22, 2011 · N9237Y · Substantial damage
  > The pilot's failure to lower the landing gear while on approach to landing. Contributing to the accident was the pilot's failure to follow a written checklist during the approach portion of the flight.
- [NTSB CEN10LA315](https://openairdocs.org/ntsb/CEN10LA315.md): Beech 1900D · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jun 12, 2010 · N195GL · Substantial damage
  > The pre-existent damage of the right-hand landing gear actuator attachment lug which led to fatigue cracking and eventual overload failure resulting in a collapsed gear upon landing.
- [NTSB CEN10LA302](https://openairdocs.org/ntsb/CEN10LA302.md): Beech C90 · Fort Worth, TX · Accident · No injuries · Limited investigation · Final report · Jun 3, 2010 · N20 · Substantial damage
  > The failure of the nose gear actuator due to insufficient lubrication of the nut assembly threads.
- [NTSB WPR10LA173](https://openairdocs.org/ntsb/WPR10LA173.md): Williams Yakovlev YAK 3UPW · Half Moon Bay, CA · Accident · No injuries · Limited investigation · Final report · Mar 22, 2010 · N153U · Substantial damage
  > The failure of left main landing gear actuator to lock in the down position due to low down-lock pressure as a result of a contaminated down-lock track and corroded down-lock balls.
- [NTSB WPR10LA034](https://openairdocs.org/ntsb/WPR10LA034.md): Aero Commander 690 · Cedar City, UT · Accident · No injuries · Limited investigation · Final report · Oct 21, 2009 · N690TR · Substantial damage
  > The failure of the landing gear accumulator/regulator and the installation of the improper priority valve, which precluded the landing gear from extending and locking into place.
- [NTSB ERA09LA474](https://openairdocs.org/ntsb/ERA09LA474.md): Cessna T210M · Dalton, GA · Accident · No injuries · Limited investigation · Final report · Aug 22, 2009 · N732MM · Substantial damage
  > The failure of the right main landing gear actuator downlock spring.

Next page: https://openairdocs.org/ntsb-findings/01023233/cases.md?page=2

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01023233'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01023233/cases

---
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.