# NTSB investigations: Continental TSIO-520 series: Landing gear not configured

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 WPR26LA311](https://openairdocs.org/ntsb/WPR26LA311.md): Cessna T210M · Logan, UT · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2026 · N761WT · Substantial damage
  > The pilot’s failure to extend the airplane’s landing gear before landing.
- [NTSB CEN26LA226](https://openairdocs.org/ntsb/CEN26LA226.md): Beech A36TC · Kingsford, MI · Accident · No injuries · Class 4 · Limited · Final report · Jun 14, 2026 · N3701N · Substantial damage
  > The pin on the nose gear brace assembly that engages with the cam on the nose landing gear door actuator shaft was not seated inside the cam, which rendered the nose landing gear inoperative.
- [NTSB WPR26LA210](https://openairdocs.org/ntsb/WPR26LA210.md): Cessna P210 · Salem, OR · Accident · No injuries · Class 4 · Limited · Final report · Jun 3, 2026 · N4875K · Substantial damage
  > The pilot’s failure to extend the landing gear prior to landing.
- [NTSB WPR23LA234](https://openairdocs.org/ntsb/WPR23LA234.md): Cessna P210N · Olivehurst, CA · Accident · No injuries · Class 4 · Limited · Final report · Jun 10, 2023 · N4761A · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB ERA22LA415](https://openairdocs.org/ntsb/ERA22LA415.md): Cessna T210N · Georgetown, DE · Accident · No injuries · Class 4 · Limited · Final report · Aug 25, 2022 · N5132C · Substantial damage
  > The pilot's failure to extend the landing gear before landing. Contributing to the accident was an inoperative landing gear warning horn.
- [NTSB WPR20CA184](https://openairdocs.org/ntsb/WPR20CA184.md): Cessna P210 · Maricopa, AZ · Accident · No injuries · Class 4 · Data collection · Final report · Jun 16, 2020 · N117KP · Substantial damage
  > The pilot's failure to extend the airplane’s retractable landing gear before landing.
- [NTSB GAA19CA171](https://openairdocs.org/ntsb/GAA19CA171.md): Cessna T210 · Chandler, AZ · Accident · No injuries · Data collection · Final report · Mar 9, 2019 · N732SJ · Substantial damage
  > The pilot's distraction while looking for other aircraft in the traffic pattern, which resulted in his failure to follow a prelanding checklist and to extend the landing gear before landing. Contributing to the accident was the improperly rigged landing gear…
- [NTSB WPR18LA264](https://openairdocs.org/ntsb/WPR18LA264.md): Cessna T210 · San Luis Obispo, CA · Accident · No injuries · Limited investigation · Final report · Sep 15, 2018 · N5340Y · Substantial damage
  > The failure of the landing gear extension motor due to wear, which resulted in the right main landing gear not fully extending and locking into place during landing. Contributing to the accident was the pilot’s failure to ensure that all three landing gear…
- [NTSB GAA18CA174](https://openairdocs.org/ntsb/GAA18CA174.md): Cessna P210 · Jacksonville, FL · Accident · No injuries · Data collection · Final report · Feb 20, 2018 · N81MT · Substantial damage
  > The pilot’s failure to extend the landing gear before landing. Contributing to the accident were pilot fatigue and his failure to use the before landing checklist.
- [NTSB GAA17CA543](https://openairdocs.org/ntsb/GAA17CA543.md): Cessna T210 · St George, UT · Accident · No injuries · Data collection · Final report · Sep 20, 2017 · N22650 · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB GAA17CA423](https://openairdocs.org/ntsb/GAA17CA423.md): Cessna T210L · Yuba City, CA · Accident · No injuries · Data collection · Final report · Jul 7, 2017 · N333GK · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB ERA17LA151](https://openairdocs.org/ntsb/ERA17LA151.md): Cessna 414 · Atlanta, GA · Accident · No injuries · Class 3 · Limited · Final report · Apr 7, 2017 · N56H · Substantial damage
  > The pilot's diverted attention during the landing approach, which resulted in his failure to configure the landing gear and a subsequent a gear-up landing.
- [NTSB GAA17CA221](https://openairdocs.org/ntsb/GAA17CA221.md): Cessna P210 · Granby, CO · Accident · No injuries · Data collection · Final report · Apr 6, 2017 · N829BA · Substantial damage
  > The pilot's failure to extend the landing gear before landing.
- [NTSB GAA15CA206](https://openairdocs.org/ntsb/GAA15CA206.md): Cessna T210L · Duluth, MN · Accident · No injuries · Data collection · Final report · Jul 25, 2015 · N1650X · Substantial damage
  > The pilot's failure to extend the landing gear prior to landing, which resulted in substantial damage to the fuselage during landing. Contributing to the accident was the pilot's diverted attention to another airplane in the vicinity and that he inaccurately…
- [NTSB WPR15CA112](https://openairdocs.org/ntsb/WPR15CA112.md): Cessna T210 - L · The Dalles, OR · Accident · No injuries · Data collection · Final report · Feb 16, 2015 · N93810 · Substantial damage
  > The pilot's failure to extend the landing gear prior to touch down. Contributing to the accident was the pilot's failure to utilize the pre-landing checklist.
- [NTSB CEN13LA252](https://openairdocs.org/ntsb/CEN13LA252.md): Cessna P210N · Saint Louis, MO · Accident · No injuries · Limited investigation · Final report · May 1, 2013 · N731NR · Substantial damage
  > The pilot's failure to extend the landing gear or check that it was in the down position before landing.
- [NTSB WPR13CA258](https://openairdocs.org/ntsb/WPR13CA258.md): Cessna P210N · Corvallis, OR · Accident · No injuries · Data collection · Final report · Apr 18, 2013 · N711BG · Substantial damage
  > The pilot's inadvertent selection and activation of the landing gear handle rather than the flap handle during the landing roll. Contributing to the accident was the pilot's decision to alter the configuration of the airplane before exiting the runway.
- [NTSB WPR13LA132](https://openairdocs.org/ntsb/WPR13LA132.md): Cessna T310R · Casper, WY · Accident · No injuries · Limited investigation · Final report · Feb 17, 2013 · N4941J · Substantial damage
  > The separation of the right main gear bracket assembly from its wing attachment fitting due to lack of lubrication of the torque tube bearing.
- [NTSB WPR12CA311](https://openairdocs.org/ntsb/WPR12CA311.md): Cessna T210L · Idaho Falls, ID · Accident · No injuries · Data collection · Final report · Jul 12, 2012 · N787AE · Substantial damage
  > The pilot’s failure to extend the landing gear before landing. Contributing to the accident was an uncorrected malfunction of the landing gear warning horn system.
- [NTSB WPR12LA097](https://openairdocs.org/ntsb/WPR12LA097.md): Beech 58P · Santa Ana, CA · Accident · No injuries · Limited investigation · Final report · Jan 8, 2012 · N580TC · Substantial damage
  > The pilot’s failure to review or execute any applicable checklist procedures or troubleshoot or take corrective action before landing despite indications that the landing gear was not extended. Contributing to the accident were the pilot’s misunderstanding of…
- [NTSB CEN10CA533](https://openairdocs.org/ntsb/CEN10CA533.md): Piper PA46-310P · Farmington, NM · Accident · No injuries · Data collection · Final report · Sep 12, 2010 · N24WW · Substantial damage
  > The pilot’s premature retraction of the landing gear and the flaps during landing. Contributing to the accident was the inadvertent dimming of the cockpit lighting, resulting in a perceived unsafe gear configuration.
- [NTSB WPR09FA212](https://openairdocs.org/ntsb/WPR09FA212.md): Cessna T210L · Moab, UT · Accident · No injuries · Field investigation · Final report · Apr 20, 2009 · N367N · Substantial damage
  > The pilot's failure to lower the landing gear prior to landing. Contributing to the accident was the pilot's self-induced distraction by maneuvering on final to show a point of interest to passengers.
- [NTSB CEN09CA125](https://openairdocs.org/ntsb/CEN09CA125.md): Cessna T210L · Albuquerque, NM · Accident · No injuries · Data collection · Final report · Jan 10, 2009 · N211LC · Substantial damage
  > The pilot's failure to remove the airplane's tow bar before takeoff.
- [NTSB WPR09CA044](https://openairdocs.org/ntsb/WPR09CA044.md): Cessna T210M · Hanford, CA · Accident · No injuries · Data collection · Final report · Nov 22, 2008 · N732XS · Substantial damage
  > The failure of the pilot to use the before-landing checklist and extend the landing gear prior to landing.
- [NTSB LAX08LA281](https://openairdocs.org/ntsb/LAX08LA281.md): Cessna TU206G · Groveland, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 20, 2008 · N818CT · Substantial damage
  > The pilot's failure to ensure that the landing gear was retracted prior to the water landing.

## 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 ('17040')
    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" = '095'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/095/cases?engine=17040

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