# NTSB investigations: Continental I0-470 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 CEN26LA261](https://openairdocs.org/ntsb/CEN26LA261.md): Beech 35-B33 · Alton, IL · Accident · No injuries · Class 4 · Limited · Investigation open · Jul 18, 2026 · N1470G · Substantial damage
- [NTSB ANC26LA060](https://openairdocs.org/ntsb/ANC26LA060.md): Beech E33 · Steamboat Springs, CO · Accident · No injuries · Class 4 · Limited · Investigation open · Jun 13, 2026 · N8475N · Substantial damage
- [NTSB ERA25LA343](https://openairdocs.org/ntsb/ERA25LA343.md): Beech 95-B55 (T42A) · St. Petersburg, FL · Accident · No injuries · Class 4 · Limited · Final report · Aug 20, 2025 · N8313N · Substantial damage
  > The pilot’s failure to extend the landing gear prior to landing. Contributing to the accident was a malfunction of the landing gear’s electrical retraction/extension system, which tripped the circuit breaker.
- [NTSB ERA25LA205](https://openairdocs.org/ntsb/ERA25LA205.md): Beech P35 · Houserville, PA · Accident · No injuries · Class 4 · Limited · Final report · May 13, 2025 · N2840R · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB ERA24LA037](https://openairdocs.org/ntsb/ERA24LA037.md): Cessna 210 · Frederick, MD · Accident · No injuries · Class 4 · Limited · Final report · Nov 13, 2023 · N9515X · Substantial damage
  > 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 in a gear up landing.
- [NTSB CEN23LA407](https://openairdocs.org/ntsb/CEN23LA407.md): Beech 95-B55 (T42A) · Greeley, CO · Accident · No injuries · Class 3 · Limited · Final report · Aug 30, 2023 · N2KM · Substantial damage
  > The pilot’s failure to extend the landing gear. Contributing to the accident was a malfunction of the landing gear warning horn for undetermined reasons.
- [NTSB CEN22LA183](https://openairdocs.org/ntsb/CEN22LA183.md): Beech 95-B55 (T42A) · Wharton, TX · Accident · No injuries · Class 4 · Limited · Final report · Apr 21, 2022 · N66NP · Substantial damage
  > The pilot’s failure to extend the landing gear.
- [NTSB WPR22LA086](https://openairdocs.org/ntsb/WPR22LA086.md): Cessna 310Q · Corona, CA · Accident · No injuries · Class 4 · Limited · Final report · Dec 7, 2021 · N310CC · Substantial damage
  > The pilot receiving instruction failure to extend the landing gear before landing due to distraction and the flight instructor’s inadequate supervision.
- [NTSB CEN21LA453](https://openairdocs.org/ntsb/CEN21LA453.md): Beech M35 · Osage Beach, MO · Accident · No injuries · Class 4 · Limited · Final report · Sep 17, 2021 · N9835R · Substantial damage
  > The pilot and flight instructor’s failure to ensure that the landing gear were extended prior to landing.
- [NTSB CEN21LA205](https://openairdocs.org/ntsb/CEN21LA205.md): Cessna 310N · Carrollton, OH · Accident · No injuries · Class 4 · Limited · Final report · Apr 24, 2021 · N310VD · Substantial damage
  > The pilot’s failure to confirm the landing gear was down before landing due to distraction during the Before Landing checks, which resulted in a gear-up landing.
- [NTSB CEN20CA363](https://openairdocs.org/ntsb/CEN20CA363.md): Beech 55 · Athens, TX · Accident · No injuries · Class 4 · Data collection · Final report · Aug 22, 2020 · N1621W · Substantial damage
  > The pilot’s failure to extend the landing gear during the approach and landing.
- [NTSB ANC20CA045](https://openairdocs.org/ntsb/ANC20CA045.md): Grumman G44 · Anchorage, AK · Accident · No injuries · Class 4 · Data collection · Final report · May 1, 2020 · N91040 · Substantial damage
  > The pilot's failure to extend the landing gear for a runway landing, which resulted in a gear-up landing.
- [NTSB ERA20LA035](https://openairdocs.org/ntsb/ERA20LA035.md): Beech 55 · Griffin, GA · Accident · No injuries · Class 3 · Limited · Final report · Nov 9, 2019 · N686DR · Substantial damage
  > The pilot’s failure to ensure that the airplane was properly configured for takeoff, which resulted in the inadvertent retraction of the landing gear during the takeoff roll and the airplane’s subsequent runway excursion.
- [NTSB ERA19TA233](https://openairdocs.org/ntsb/ERA19TA233.md): Beech 95B55 · Sanford, FL · Accident · No injuries · Class 3 · Final report · Jul 19, 2019 · N386Q · Substantial damage
  > The pilot's failure to extend the landing gear during landing.
- [NTSB WPR19LA139](https://openairdocs.org/ntsb/WPR19LA139.md): Beech 35 · Minden, NV · Accident · No injuries · Class 3 · Limited · Final report · May 5, 2019 · N1510S · Substantial damage
  > A partial extension of the landing gear due to the poor condition of the electric landing gear motor, which resulted in a gear collapse upon landing.
- [NTSB CEN15CA011](https://openairdocs.org/ntsb/CEN15CA011.md): Beech 35-B33 · Effingham, IL · Accident · No injuries · Data collection · Final report · Oct 11, 2014 · N718CD · Substantial damage
  > The pilot's failure to lower the landing gear.
- [NTSB WPR13CA193](https://openairdocs.org/ntsb/WPR13CA193.md): Cessna 210B · Caldwell, ID · Accident · No injuries · Data collection · Final report · Apr 15, 2013 · N9685X · Substantial damage
  > The pilot’s failure to lower the landing gear, which resulted in a gear-up hard landing.
- [NTSB WPR12CA393](https://openairdocs.org/ntsb/WPR12CA393.md): Beech 95-55 · Spanoway, WA · Accident · No injuries · Data collection · Final report · Sep 4, 2012 · N4QC · Substantial damage
  > The pilot’s failure to lower the landing gear prior to landing.
- [NTSB CEN10LA564](https://openairdocs.org/ntsb/CEN10LA564.md): Cessna 310K · Boerne Stage, TX · Accident · No injuries · Limited investigation · Final report · Sep 26, 2010 · N550JW · Substantial damage
  > The pilot’s failure to ensure that the landing gear was extended prior to landing, resulting in a landing on the partially extended landing gear.
- [NTSB WPR10LA216](https://openairdocs.org/ntsb/WPR10LA216.md): Cessna 210 · Show Low, AZ · Accident · No injuries · Limited investigation · Final report · Apr 11, 2010 · N9527T · Substantial damage
  > Inadequate clearance between a landing gear brake system line and airframe components, which precluded gear extension and resulted in an intentional gear-up landing.
- [NTSB ERA10CA201](https://openairdocs.org/ntsb/ERA10CA201.md): Beech 95-B55 (T42A) · Sevierville, TN · Accident · No injuries · Data collection · Final report · Mar 31, 2010 · N43BS · Substantial damage
  > The pilot's inadvertent retraction of the landing gear on the ground during a touch-and-go landing.
- [NTSB CEN09CA260](https://openairdocs.org/ntsb/CEN09CA260.md): Cessna 210 · Richmond, IN · Accident · No injuries · Data collection · Final report · Apr 22, 2009 · N7409E · Substantial damage
  > The pilot under instruction's failure to lower the landing gear and the instructor pilot's inadequate supervision.
- [NTSB WPR09CA101](https://openairdocs.org/ntsb/WPR09CA101.md): Beech K35 · Port Townsend, WA · Accident · No injuries · Data collection · Final report · Nov 14, 2008 · N411B · Substantial damage
  > The pilot's failure to lower the landing gear prior to landing. Contributing to the accident was the pilot's failure to use a checklist and the distraction caused by the discussion with the passenger.
- [NTSB CHI08CA110](https://openairdocs.org/ntsb/CHI08CA110.md): Beech 95-B55 · Lansing, MI · Accident · No injuries · Data collection · Final report · Apr 18, 2008 · N8991M · Substantial damage
  > The pilot's inadvertent raising of the landing gear during rollout.

## 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 ('17027')
    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=17027

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