# Landing gear system, general - 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 system, general - NTSB code: 01023200 - Cases: 113 - In the probable cause: 91 - Fatal cases: 4 - All cases: https://openairdocs.org/ntsb-findings/01023200/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01023200/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/01023200 ## Cases per year (in the probable cause / all) - 2008: 7 / 18 - 2009: 4 / 5 - 2010: 4 / 5 - 2011: 11 / 13 - 2012: 14 / 15 - 2013: 7 / 9 - 2014: 4 / 4 - 2015: 3 / 4 - 2016: 1 / 1 - 2017: 6 / 7 - 2018: 3 / 3 - 2019: 4 / 5 - 2020: 4 / 4 - 2021: 1 / 1 - 2022: 6 / 6 - 2023: 4 / 4 - 2024: 5 / 6 - 2025: 2 / 2 - 2026: 1 / 1 ## Defining events in these cases - [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 51 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 20 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 11 cases - [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 7 cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 4 cases - [Hard landing](https://openairdocs.org/ntsb-events/092): 4 cases - [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 3 cases - [Loss of lift](https://openairdocs.org/ntsb-events/500): 1 cases - [Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470): 1 cases - [Landing area overshoot](https://openairdocs.org/ntsb-events/380): 1 cases ## Aircraft models (registry) - [Mooney M20K](https://openairdocs.org/model/mooney-m20k): 4 cases - [Cessna 172RG](https://openairdocs.org/model/cessna-172rg): 4 cases - [Piper PA-30](https://openairdocs.org/model/piper-pa-30): 3 cases - [Piper PA-24-260](https://openairdocs.org/model/piper-pa-24-260): 3 cases - [Cessna TR182](https://openairdocs.org/model/cessna-tr182): 3 cases - [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180): 3 cases - [Piper PA-46-310P](https://openairdocs.org/model/piper-pa-46-310p): 2 cases - [Cessna P210N](https://openairdocs.org/model/cessna-p210n): 2 cases - [Cessna R182](https://openairdocs.org/model/cessna-r182): 2 cases - [Beech 58](https://openairdocs.org/model/beech-58): 2 cases ## Other findings in the same cases - [Forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035) (Personnel issues): 33 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 19 cases - [Use of checklist](https://openairdocs.org/ntsb-findings/02063030) (Personnel issues): 15 cases - [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 13 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 9 cases - [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 8 cases - [Task monitoring/vigilance](https://openairdocs.org/ntsb-findings/02021520) (Personnel issues): 7 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 6 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 5 cases - [Delayed action](https://openairdocs.org/ntsb-findings/02041025) (Personnel issues): 5 cases ## Newest cases - [NTSB CEN26LA166](https://openairdocs.org/ntsb/CEN26LA166), Apr 9, 2026: Diamond Aircraft Ind DA 42 NG (N311LH), Colorado Springs, CO, substantial damage. Probable cause: Maintenance personnel's installation of an oversized tire, which prevented the left main landing gear from extending resulting in a precautionary gear up landing. - [NTSB CEN26LA002](https://openairdocs.org/ntsb/CEN26LA002), Oct 1, 2025: Champion 7GC (N621E), Haskell, OK, substantial damage. Probable cause: The pilot’s excessive braking during the landing roll, which resulted in a nose over. Contributing to the accident was the pilot’s lack of experience with the recently installed brakes and tundra… - [NTSB CEN25LA083](https://openairdocs.org/ntsb/CEN25LA083), Jan 20, 2025: Raytheon Hawker 800XP (N6NR), Minneapolis, MN, substantial damage. Probable cause: The failure of the nose landing gear to extend for undetermined reasons. - [NTSB ANC25LA009](https://openairdocs.org/ntsb/ANC25LA009), Nov 29, 2024: Cessna 180 (N9140R), Egegik, AK, substantial damage. Probable cause: A failure of the right main landing gear leg for reasons that could not be determined. - [NTSB CEN25LA001](https://openairdocs.org/ntsb/CEN25LA001), Oct 1, 2024: Cessna TR182 (N756JY), Englewood, CO, substantial damage. Probable cause: The collapse of the right main landing gear during landing rollout. - [NTSB WPR24LA278](https://openairdocs.org/ntsb/WPR24LA278), Aug 10, 2024: Cirrus Design SF50 (N727VB), Watsonville, CA, substantial damage. Probable cause: The pilot’s inadvertent use of the landing gear control handle instead of the flaps selector switch during the landing rollout, which resulted in the collapse of the nose landing gear. - [NTSB CEN24LA261](https://openairdocs.org/ntsb/CEN24LA261), Jul 12, 2024: Air Tractor AT602 (N528JC), Decatur, IL, substantial damage. Probable cause: The pilot’s inability to maintain directional control during the landing roll due to the malfunction of the tail wheel locking mechanism. - [NTSB WPR24LA157](https://openairdocs.org/ntsb/WPR24LA157), May 16, 2024: Cessna P210 (N4769K), Daggett, CA, substantial damage. Probable cause: The pilot’s failure to detect the tripped alternator circuit breaker in flight, which resulted in a drained battery that prevented the landing gear from fully extending to the down-and-locked… - [NTSB CEN24LA086](https://openairdocs.org/ntsb/CEN24LA086), Jan 7, 2024: Piper PA-44-180 (N816AT), Fort Worth, TX, substantial damage. Probable cause: The pilot’s failure to extend the landing gear and the flight instructor’s lack of recognition and inadequate remedial action, which resulted in a gear up landing. - [NTSB ERA24LA037](https://openairdocs.org/ntsb/ERA24LA037), Nov 13, 2023: Cessna 210 (N9515X), Frederick, MD, substantial damage. Probable cause: A failure of a hydraulic filter, which preluded normal extension of the landing gear. Also causal was the pilot’s failure to confirm that he landing gear was extended before landing, which resulted… 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. --- 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.