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NTSB finding · Aircraft › Aircraft systems › Landing gear system

All 297 cases271 in the probable cause
Cases
297
In the probable cause
271 (91%)
Fatal cases
2
NTSB code
01023242

NTSB has coded findings and defining events since 2008. Earlier cases used its older occurrence and cause codes, so they aren’t counted here.

When and where

In green, cases where NTSB made it part of the probable cause; in gray, a factor or other finding. Findings are coded with the final report, often a year or more after the event, so the latest years are incomplete.

Cases per year

2008In the probable causeFactor only2026

Where

Open the map
Query with SQL
duckdb -csv -c "SELECT year(c.\"eventDate\") AS year, count(DISTINCT f.case_mkey) AS cases,
    count(DISTINCT f.case_mkey) FILTER (WHERE f.\"inProbableCause\") AS in_probable_cause
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = f.case_mkey
  WHERE starts_with(f.\"findingCode\", '01023242') AND c.\"eventDate\" >= DATE '2000-01-01'
  GROUP BY 1
  ORDER BY 1"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

In the same cases

Defining events
Aircraft models

Aircraft matched to the registry by N-number and date.

Other findings
Query with SQL
duckdb -csv -c "WITH matched AS (SELECT DISTINCT case_mkey, aircrafts_position FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' WHERE starts_with(\"findingCode\", '01023242'))
  SELECT * FROM (
  SELECT 'Defining event' AS kind, e.\"tier2Number\" AS code, max(e.\"eventTier2Name\") AS name, count(DISTINCT f.case_mkey) AS cases
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_events.parquet' e ON e.case_mkey = f.case_mkey AND e.aircrafts_position = f.aircrafts_position AND e.\"isDefiningEvent\"
  WHERE e.\"tier2Number\" <> ''
  GROUP BY ALL
  UNION ALL
  SELECT 'Aircraft model', a.aircraft_model_code, any_value(concat_ws(' ', m.manufacturer, m.model)), count(DISTINCT f.case_mkey)
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = f.case_mkey AND a.position = f.aircrafts_position
  LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m ON m.code = a.aircraft_model_code
  WHERE a.aircraft_model_code IS NOT NULL
  GROUP BY ALL
  UNION ALL
  SELECT 'Other finding', left(g.\"findingCode\", 8), max(g.\"tier4Name\"), count(DISTINCT g.case_mkey)
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' g
  WHERE g.case_mkey IN (SELECT case_mkey FROM matched) AND NOT starts_with(g.\"findingCode\", '01023242') AND g.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY ALL
  )
  QUALIFY row_number() OVER (PARTITION BY kind ORDER BY cases DESC) <= 10
  ORDER BY kind, cases DESC"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Newest cases · 297

NTSB ERA26LA318Accident · No injuriesClass 4 · LimitedFinal reportCessna 140 · Homestead, FLThe pilot’s excessive braking during the landing roll, which resulted in a nose over.May 30, 2026 · N77061 · Substantial damageNTSB ERA26LA210Accident · No injuriesClass 4 · LimitedFinal reportJohn Bradley Vans RV-7 · Athens, GAContamination of the left wheel brake system with debris, which resulted in a loss of directional control during takeoff.May 15, 2026 · N519JS · Substantial damageNTSB WPR26LA114Accident · Minor injuriesClass 4 · LimitedFinal reportAmerican Champion 8GCBC · Carefree, AZThe pilot reported that he landed the tailwheel equipped airplane at a backcountry airstrip, and while taxiing on rough terrain, the tailwheel spring failed and the tailwheel assembly separated from the airplane. The pilot shut down the airplane and exited to…Mar 2, 2026 · N636DB · Substantial damageNTSB WPR26LA075Accident · No injuriesClass 4 · LimitedFinal reportMaule M-5-235C · Jay Em, WYThe loss of directional control and subsequent nose over due to the inadvertent engagement of the right wheel parking brake as a result of cabin floor carpeting migrating between the right brake master cylinder and parking brake locking lever.Jan 1, 2026 · N56500 · Substantial damageNTSB ERA26LA076Accident · No injuriesClass 4 · LimitedFinal reportCessna 172N · East Farmingdale, NYA loss of brake effectiveness during taxi, which resulted in a collision with another airplane.Dec 22, 2025 · N1517E · 2 aircraft · Minor damageNTSB ERA26LA020Accident · No injuriesClass 4 · LimitedFinal reportCessna 140 · Canon, GAThe pilot’s inadvertent application of brakes during the landing roll, which resulted in a noseover.Oct 13, 2025 · N1882V · Substantial damageNTSB WPR26LA018Accident · Minor injuriesClass 4 · LimitedFinal reportCessna 180 · Imnaha, ORThe pilot’s continued application of brakes during an aborted takeoff in a tailwind on down-sloping terrain, which resulted in a nose-over.Oct 9, 2025 · N249MD · Substantial damageNTSB CEN26LA002Accident · Minor injuriesClass 4 · LimitedFinal reportChampion 7GC · Haskell, OKThe 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 tires.Oct 1, 2025 · N621E · Substantial damageNTSB CEN25LA351Accident · No injuriesClass 4 · LimitedFinal reportCirrus Design SR22 · Nora Springs, IAThe pilot’s improper decision-making for the attempted landing, which resulted in a runway overrun due to inadequate runway landing distance with a quartering tailwind. Contributing to the accident was the wet condition of the runway.Aug 28, 2025 · N45JN · Substantial damageNTSB CEN25LA293Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-31T3 · Appleton, WIThe pilot’s failure to maintain control of the airplane on the ground, which resulted in a collision with a parked airplane.Jul 26, 2025 · N401VA · Substantial damage
See all 297 cases
Query with SQL
duckdb -csv -c "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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f.\"findingCode\", '01023242'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.