# Landing gear actuator

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Landing gear system](https://openairdocs.org/ntsb-findings/010232) › Landing gear actuator
- NTSB code: 01023233
- Cases: 54
- In the probable cause: 53
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01023233/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023233/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01023233

## Cases per year (in the probable cause / all)

- 2008: 1 / 1
- 2009: 5 / 5
- 2010: 3 / 3
- 2011: 7 / 7
- 2012: 4 / 4
- 2013: 5 / 5
- 2014: 2 / 3
- 2015: 3 / 3
- 2017: 6 / 6
- 2018: 1 / 1
- 2019: 2 / 2
- 2020: 2 / 2
- 2021: 1 / 1
- 2022: 5 / 5
- 2023: 2 / 2
- 2024: 3 / 3
- 2025: 1 / 1

## Defining events in these cases

- [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 27 cases
- [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 24 cases
- [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 1 cases
- [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 1 cases
- [Abnormal runway contact](https://openairdocs.org/ntsb-events/090): 1 cases

## Aircraft models (registry)

- [Cessna T210M](https://openairdocs.org/model/cessna-t210m): 4 cases
- [Cessna 210B](https://openairdocs.org/model/cessna-210b): 3 cases
- [Cessna 172RG](https://openairdocs.org/model/cessna-172rg): 3 cases
- [Beech 1900D](https://openairdocs.org/model/beech-1900d): 3 cases
- [Cessna P210N](https://openairdocs.org/model/cessna-p210n): 2 cases
- [Cessna T210L](https://openairdocs.org/model/cessna-t210l): 2 cases
- [Cessna T210K](https://openairdocs.org/model/cessna-t210k): 2 cases
- [Cessna 210C](https://openairdocs.org/model/cessna-210c): 2 cases
- [Beech A36](https://openairdocs.org/model/beech-a36): 2 cases
- [Socata TBM 700](https://openairdocs.org/model/socata-tbm-700): 1 cases

## Other findings in the same cases

- [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 5 cases
- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 3 cases
- [Hydraulic fluid](https://openairdocs.org/ntsb-findings/01071015) (Aircraft): 3 cases
- [Use of checklist](https://openairdocs.org/ntsb-findings/02063030) (Personnel issues): 2 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 2 cases
- [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 2 cases
- [Maintenance, general](https://openairdocs.org/ntsb-findings/02062000) (Personnel issues): 2 cases
- [Post maintenance inspection](https://openairdocs.org/ntsb-findings/02061515) (Personnel issues): 2 cases
- [Landing gear door actuator](https://openairdocs.org/ntsb-findings/01023232) (Aircraft): 2 cases
- [Gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230) (Aircraft): 2 cases

## Newest cases

- [NTSB ERA26LA043](https://openairdocs.org/ntsb/ERA26LA043), Nov 14, 2025: Beech 95-B55 (N711FA), Dothan, AL, substantial damage. Probable cause: The failure of the left main landing gear actuator rods, which resulted in a gear up landing.
- [NTSB WPR24LA126](https://openairdocs.org/ntsb/WPR24LA126), Apr 11, 2024: Cessna P210N (N806RC), Auburn, WA, substantial damage. Probable cause: 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), Mar 30, 2024: Beta Biz LX7 (N222MA), Huntsville, AL, substantial damage. Probable cause: 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), Mar 7, 2024: Piper PA24 (N6339P), Stafford, VA, substantial damage. Probable cause: 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), Oct 18, 2023: Cessna 210B (N9597X), Pueblo, CO, substantial damage. Probable cause: 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…
- [NTSB WPR23LA213](https://openairdocs.org/ntsb/WPR23LA213), May 30, 2023: Cessna 210 (N9574X), Tacoma, WA, substantial damage. Probable cause: 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…
- [NTSB WPR23LA012](https://openairdocs.org/ntsb/WPR23LA012), Oct 10, 2022: Cessna T210L (N2425S), Marana, AZ, substantial damage. Probable cause: 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), Jun 24, 2022: Cessna TR182 (N738JZ), Santa Barbara, CA, substantial damage. Probable cause: 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), Jun 18, 2022: Cessna 414 (N414HF), Jasper, GA, substantial damage. Probable cause: 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), Jun 12, 2022: Mooney M20J (N9158D), Charleston, SC, substantial damage. Probable cause: 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 has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

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