# NTSB investigations: Continental IO-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.

Page 1 of 2 · 55 cases

## Latest cases

- [NTSB ANC26LA085](https://openairdocs.org/ntsb/ANC26LA085.md): Beech 36 · Port Alsworth, AK · Accident · No injuries · Class 4 · Limited · Investigation open · Aug 6, 2026 · N364EM · Substantial damage
- [NTSB CEN26LA262](https://openairdocs.org/ntsb/CEN26LA262.md): Beech F33A · Janesville, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 20, 2026 · N933A · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB WPR26LA171](https://openairdocs.org/ntsb/WPR26LA171.md): Cessna 210 · Redding, CA · Accident · No injuries · Class 4 · Limited · Final report · Apr 25, 2026 · N6130F · Substantial damage
  > The pilot’s failure to extend the landing gear before landing due to distraction and his failure to conduct the before landing checklist.
- [NTSB CEN26LA028](https://openairdocs.org/ntsb/CEN26LA028.md): Beech A36 · Hondo, TX · Accident · No injuries · Class 4 · Limited · Final report · Oct 22, 2025 · N17826 · Substantial damage
  > The pilot’s failure to extend the landing gear before landing due to distraction and his failure to conduct the Before Landing checklist.
- [NTSB WPR26LA016](https://openairdocs.org/ntsb/WPR26LA016.md): Beech S35 · Olympia, WA · Accident · No injuries · Class 4 · Limited · Final report · Oct 12, 2025 · N35S · Substantial damage
  > The pilot’s inadvertent retraction of the landing gear after landing.
- [NTSB CEN25LA319](https://openairdocs.org/ntsb/CEN25LA319.md): Beech S35 · Lowell, MI · Accident · No injuries · Class 4 · Limited · Final report · Aug 9, 2025 · N861T · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB GAA25WA230](https://openairdocs.org/ntsb/GAA25WA230.md): Beech A36 · Montevideo, Uruguay · Accident · Class 5 · Foreign · Aug 5, 2025 · N4970M
- [NTSB CEN25LA185](https://openairdocs.org/ntsb/CEN25LA185.md): Cessna 401 · Arlington, TX · Accident · No injuries · Class 4 · Limited · Final report · May 22, 2025 · N3239Q · Substantial damage
  > The failure of the left landing gear system and subsequent intentional gear up landing.
- [NTSB ERA25LA094](https://openairdocs.org/ntsb/ERA25LA094.md): Beech 58 · Florence, SC · Accident · No injuries · Class 4 · Limited · Final report · Dec 27, 2024 · N458K · Substantial damage
  > The pilot’s failure to follow the emergency procedures and extend the landing gear manually after the landing gear did not initially extend normally.
- [NTSB CEN25LA017](https://openairdocs.org/ntsb/CEN25LA017.md): Beech 58 · Shreveport, LA · Accident · No injuries · Class 4 · Limited · Final report · Oct 16, 2024 · N4203A · Substantial damage
  > The pilot’s inadvertent failure to lower the landing gear before touching down.
- [NTSB CEN24LA307](https://openairdocs.org/ntsb/CEN24LA307.md): Beech 58 · Kalamazoo, MI · Accident · No injuries · Class 4 · Limited · Final report · Aug 6, 2024 · N484WW · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB CEN24LA264](https://openairdocs.org/ntsb/CEN24LA264.md): Cessna 210 · Mount Vernon, IL · Accident · No injuries · Class 4 · Limited · Final report · Jul 12, 2024 · N9776Y · Substantial damage
  > The pilot’s failure to lower the landing gear, resulting in a wheel up landing. Contributing to the accident was the intermittent warning horn which likely did not sound to warn the pilot about the misconfigured landing gear.
- [NTSB ERA24LA193](https://openairdocs.org/ntsb/ERA24LA193.md): Beech E-55 · Greenville, SC · Accident · No injuries · Class 4 · Limited · Final report · Apr 24, 2024 · N333HE · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB ERA24LA226](https://openairdocs.org/ntsb/ERA24LA226.md): Beech A36 · Griffin, GA · Accident · No injuries · Class 4 · Limited · Final report · Mar 11, 2024 · N216R · Substantial damage
  > The pilot’s failure to extend the airplane’s landing gear before landing.
- [NTSB ERA24LA049](https://openairdocs.org/ntsb/ERA24LA049.md): Beech A36 · Valdosta, GA · Accident · No injuries · Class 4 · Limited · Final report · Nov 26, 2023 · N94EM · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB WPR23LA342](https://openairdocs.org/ntsb/WPR23LA342.md): Cessna T210H · Santa Rosa, CA · Accident · No injuries · Class 4 · Limited · Final report · Sep 6, 2023 · N2210R · Substantial damage
  > The pilot’s failure to configure the landing gear during the landing approach.
- [NTSB WPR23LA331](https://openairdocs.org/ntsb/WPR23LA331.md): Beech N35 · Ennis, MT · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2023 · N92NJ · Substantial damage
  > The pilot's failure to extend the landing gear before landing.
- [NTSB CEN22LA407](https://openairdocs.org/ntsb/CEN22LA407.md): Beech 36 · Tupelo, MS · Accident · No injuries · Class 4 · Limited · Final report · Sep 5, 2022 · N7835R · Substantial damage
  > The pilot’s failure to extend the landing gear for a landing.
- [NTSB WPR21LA334](https://openairdocs.org/ntsb/WPR21LA334.md): Bellanca 17-30A · Hurricane, UT · Accident · No injuries · Class 4 · Limited · Final report · Sep 3, 2021 · N15DQ · Substantial damage
  > The pilot's failure to extend the landing gear
- [NTSB ERA21LA315](https://openairdocs.org/ntsb/ERA21LA315.md): Cessna 210N · Somerville, NJ · Accident · No injuries · Class 4 · Limited · Final report · Aug 2, 2021 · N52MM · Substantial damage
  > The pilot’s failure to extend the landing gear, which resulted in a gear up landing and substantial damage to the fuselage.
- [NTSB WPR21LA028](https://openairdocs.org/ntsb/WPR21LA028.md): Cessna T210K · Los Alamos, NM · Accident · No injuries · Class 4 · Limited · Final report · Oct 24, 2020 · N8251M · Substantial damage
  > The pilot’s failure to extend the landing gear, which resulted in the airplane landing with the landing gear retracted.
- [NTSB CEN20CA164](https://openairdocs.org/ntsb/CEN20CA164.md): Cessna A185 · Anoka, MN · Accident · Minor injuries · Class 4 · Data collection · Final report · Apr 30, 2020 · N1669M · Substantial damage
  > The pilot's inadvertent extension of the landing gear and his subsequent water landing with the wheels extended.
- [NTSB GAA20CA084](https://openairdocs.org/ntsb/GAA20CA084.md): Beech 55 · Broomfield, CO · Accident · No injuries · Data collection · Final report · Nov 9, 2019 · N6206V · Substantial damage
  > The pilot's unintentional retraction of the landing gear during the landing roll.
- [NTSB GAA19CA358](https://openairdocs.org/ntsb/GAA19CA358.md): Beech 35 · Bowie, MD · Accident · No injuries · Data collection · Final report · May 27, 2019 · N9018S · Substantial damage
  > The pilot's failure to extend the landing gear before landing.
- [NTSB WPR19FA152](https://openairdocs.org/ntsb/WPR19FA152.md): Cessna A185 · Whittier, AK · Accident · 1 fatal · Class 3 · Field · Final report · May 21, 2019 · N5457X · Substantial damage
  > The pilot’s failure to configure the landing gear for a water landing, which resulted in a nose-over. Contributing to the accident was the pilot's distraction due to his talking passengers.
- [NTSB ERA19TA129](https://openairdocs.org/ntsb/ERA19TA129.md): Beech E55 · St. Petersburg, FL · Accident · No injuries · Class 3 · Final report · Mar 13, 2019 · N15VK · Substantial damage
  > The pilot's failure to extend the landing gear, which resulted in a gear-up landing.
- [NTSB WPR18LA209](https://openairdocs.org/ntsb/WPR18LA209.md): Cessna 402 · Fort Lauderdale, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 14, 2018 · N322HA · Substantial damage
  > The failure of the left starter relay, which resulted in a loss of electrical power during the flight and the failure of the T-handle from the cable led to a forced landing with the landing gear retracted.
- [NTSB GAA18CA115](https://openairdocs.org/ntsb/GAA18CA115.md): Cessna 210 · Sussex, NJ · Accident · No injuries · Data collection · Final report · Jan 21, 2018 · N884KM · Destroyed
  > The pilot’s inadvertent landing gear retraction during approach.
- [NTSB CEN17LA212](https://openairdocs.org/ntsb/CEN17LA212.md): Cessna 210F · Anoka, MN · Accident · No injuries · Limited investigation · Final report · Jun 3, 2017 · N1854F · Substantial damage
  > The failure of the landing gear to fully extend due to insufficient hydraulic fluid in the hydraulic system as a result of inadequate maintenance by the airplane owner.
- [NTSB ERA17LA189](https://openairdocs.org/ntsb/ERA17LA189.md): Beech 58 · Augusta, GA · Accident · No injuries · Limited investigation · Final report · May 24, 2017 · N9132S · Substantial damage
  > The pilot’s failure to properly configure the airplane for landing. Contributing to the accident were the pilot’s fatigue and self-induced distractions.
- [NTSB CEN17LA091](https://openairdocs.org/ntsb/CEN17LA091.md): Beech 95-C55 · Delta, CO · Accident · No injuries · Limited investigation · Final report · Jan 18, 2017 · N303QB · Substantial damage
  > The failure of the landing gear to extend during landing approach due to the interference between the landing gear motor's sector and worm gears.
- [NTSB GAA17CA031](https://openairdocs.org/ntsb/GAA17CA031.md): Bellanca 17 30 · Burnet, TX · Accident · No injuries · Data collection · Final report · Oct 15, 2016 · N8790V · Substantial damage
  > The pilot’s decision to continue the unstabilized approach and his failure to extend the landing gear before landing.
- [NTSB CEN16LA336](https://openairdocs.org/ntsb/CEN16LA336.md): Beech E-55 · Wichita Falls, TX · Accident · No injuries · Limited investigation · Final report · Aug 24, 2016 · N855T · Substantial damage
  > The failure of the landing gear assembly snap ring, which prevented the pilot from being able to extend the landing gear and resulted in a gear-up landing. Also causal was the lack of the assembly's overhaul in accordance with the airplane maintenance manual.
- [NTSB GAA16CA375](https://openairdocs.org/ntsb/GAA16CA375.md): Cessna A185 · Hayden Lake, ID · Accident · No injuries · Data collection · Final report · Jun 26, 2016 · N185TG · Substantial damage
  > The pilot's failure to retract the amphibious airplane's land-wheels prior to landing on a lake, which resulted in a nose over.
- [NTSB GAA16CA161](https://openairdocs.org/ntsb/GAA16CA161.md): Beech 58 · Huntsville, AL · Accident · No injuries · Data collection · Final report · Mar 18, 2016 · N358CB · Substantial damage
  > The pilot's failure to extend the landing gear prior to touchdown resulting in a landing with the landing gear retracted and consequent substantial damage.
- [NTSB ERA16CA093](https://openairdocs.org/ntsb/ERA16CA093.md): Cessna 210 · Venice, FL · Accident · No injuries · Data collection · Final report · Jan 18, 2016 · N761EP · Substantial damage
  > The pilot's failure to properly configure the landing gear, which resulted in a landing with the landing gear in the retracted position.
- [NTSB GAA15CA222](https://openairdocs.org/ntsb/GAA15CA222.md): Cessna A185F · Emily, MN · Accident · No injuries · Data collection · Final report · Aug 10, 2015 · N23DE · Substantial damage
  > The pilot's failure to retract the landing gear, which resulted in a gear down water landing and a nose over.
- [NTSB ERA15LA273](https://openairdocs.org/ntsb/ERA15LA273.md): Beech 35-C33 · Wilmington, NC · Accident · No injuries · Limited investigation · Final report · Jul 19, 2015 · N829T · Substantial damage
  > The pilot's failure to ensure that the landing gear was in the down and locked position before touchdown, which resulted in a landing with the gear in transit.
- [NTSB CEN15CA049](https://openairdocs.org/ntsb/CEN15CA049.md): Cessna 210 · Kalamazoo, MI · Accident · No injuries · Data collection · Final report · Oct 24, 2014 · N8219M · Substantial damage
  > The pilot's failure to ensure that the landing gear was fully extended in the down and locked position prior to touchdown, which resulted in the left main landing gear collapse, runway excursion, and impact with a runway exit sign.
- [NTSB ERA14CA157](https://openairdocs.org/ntsb/ERA14CA157.md): Cessna 210N · Marathon, FL · Accident · No injuries · Data collection · Final report · Mar 17, 2014 · N210JZ · Substantial damage
  > The pilot's failure to ensure that the airplane's landing gear was down and locked prior to touchdown. Contributing to the accident was the possibility of intermittent landing gear operation due to a faulty hydraulic power pack contactor.
- [NTSB WPR13CA422](https://openairdocs.org/ntsb/WPR13CA422.md): Beech 35 - Undesignat · Seattle, WA · Accident · No injuries · Data collection · Final report · Sep 21, 2013 · N5894S · Substantial damage
  > The pilot's distracted attention and failure to extend the landing gear, which resulted in a gear up landing.
- [NTSB ERA13CA207](https://openairdocs.org/ntsb/ERA13CA207.md): Cessna A185F · Palatka, FL · Accident · No injuries · Data collection · Final report · Apr 16, 2013 · N812F · Substantial damage
  > The pilot’s failure to retract the landing gear after takeoff from a runway, and his subsequent water landing with the wheels extended.
- [NTSB WPR12CA415](https://openairdocs.org/ntsb/WPR12CA415.md): Beech V35B · Elko, NV · Accident · No injuries · Data collection · Final report · Sep 8, 2012 · N1129T · Substantial damage
  > The pilot's failure to extend the landing gear during the aborted takeoff. Contributing to the accident was the pilot's failure to perform a thorough preflight inspection.
- [NTSB CEN12CA613](https://openairdocs.org/ntsb/CEN12CA613.md): Beech A36 · Washington, MO · Accident · No injuries · Data collection · Final report · Aug 7, 2012 · N41HC · Substantial damage
  > The pilot raised the landing gear handle instead of the flap handle during a touch-and-go landing, resulting in the collapse of the nose landing gear while accelerating to takeoff.
- [NTSB CEN12CA436](https://openairdocs.org/ntsb/CEN12CA436.md): Beech 58 · Sugar Loaf Mountain, MI · Accident · No injuries · Data collection · Final report · Jul 10, 2012 · N2023V · Substantial damage
  > The pilot did not complete the before-landing checklist and, subsequently, failed to extend the landing gear prior to landing. Contributing to the accident was the pilot’s distraction with his passengers’ conversation.
- [NTSB ERA12LA450](https://openairdocs.org/ntsb/ERA12LA450.md): Beech A36 · Johns Island, SC · Accident · No injuries · Limited investigation · Final report · Jul 9, 2012 · N6672B · Substantial damage
  > The pilot's failure to complete the manual emergency gear extension after a loss of electrical power. Contributing to the accident was the pilot's decision to delegate the landing gear extension to a non-pilot-rated passenger.
- [NTSB ERA12CA424](https://openairdocs.org/ntsb/ERA12CA424.md): Beech 58 · Atlanta, GA · Accident · No injuries · Data collection · Final report · Jul 1, 2012 · N827EB · Substantial damage
  > The pilot's inadvertent retraction of the landing gear during the landing.
- [NTSB CEN12LA434](https://openairdocs.org/ntsb/CEN12LA434.md): Beech A36 · New Orleans, LA · Accident · No injuries · Limited investigation · Final report · Jun 27, 2012 · N136EH · Substantial damage
  > The pilot's failure to lower the landing gear before touchdown.
- [NTSB CEN12LA283](https://openairdocs.org/ntsb/CEN12LA283.md): Beech 58 · Sioux Falls, SD · Accident · No injuries · Limited investigation · Final report · Apr 24, 2012 · N8121R · Substantial damage
  > The failure of the normal and emergency landing gear system to fully retract or extend the landing gear for reasons that could not be determined during postaccident examinations, which resulted in a partial gear-up landing.
- [NTSB CEN12CA036](https://openairdocs.org/ntsb/CEN12CA036.md): Cessna 210J · West Chicago, IL · Accident · No injuries · Data collection · Final report · Oct 23, 2011 · N3309S · Substantial damage
  > The pilot's failure to extend the landing gear before touchdown due to his failure to use a checklist.

Next page: https://openairdocs.org/ntsb-events/095/cases.md?engine=17032&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 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" = '095'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/095/cases?engine=17032

---
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.