OpenAirDocs.org

Landing gear steering system

Open the Markdown

NTSB finding · Aircraft › Aircraft systems › Landing gear system

All 32 cases29 in the probable cause
Cases
32
In the probable cause
29 (91%)
Fatal cases
0
NTSB code
01023250

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\", '01023250') 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\", '01023250'))
  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\", '01023250') 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 · 32

NTSB ERA25LA371Accident · Minor injuriesClass 4 · LimitedFinal reportNorth American T-6G · Rossville, TNThe pilot’s failure to adequately monitor the airplane’s path during takeoff toward the setting sun. Contributing was the undetected worn and fractured tailwheel locking pin.Sep 28, 2025 · N888WV · Substantial damageNTSB CEN25LA245Accident · No injuriesClass 4 · LimitedFinal reportFairchild 24R · Greeley, COThe pilot’s inability to maintain directional control during landing due to excessive wear in the tailwheel steering assembly.Jul 9, 2025 · N81210 · Substantial damageNTSB WPR25LA193Accident · No injuriesClass 4 · LimitedFinal reportCessna 182F · Nephi, UTA failure of the nose wheel steering shaft and subsequent rotation of the nosewheel which resulted in the collapse of the nose landing gear during landing.Jun 29, 2025 · N3608U · Substantial damageNTSB ERA24LA024Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-12 · Rangeley, METhe pilot’s failure to maintain directional control during the landing roll with a crosswind, after the right tailwheel spring separated.Oct 27, 2023 · N3910M · Substantial damageNTSB WPR23LA269Accident · Minor injuriesClass 3 · LimitedFinal reportCSP Leasing MTO Sport · Gardiner, MTFailure of the rudder/nosewheel steering system for reasons that could not be determined, which resulted in loss of yaw control and a subsequent rollover.Jun 1, 2023 · N207AG · Substantial damageNTSB ERA23LA170Accident · No injuriesClass 4 · LimitedFinal reportNorth American T-6G · Lakeland, FLA loss of control on the ground as a result of left tailwheel steering cable separation.Mar 29, 2023 · N791MH · Substantial damageNTSB WPR23LA130Accident · Minor injuriesClass 3 · LimitedFinal reportAero Commander 100-180 · Gordonville, TXA fatigue fracture of the nose landing gear scissor link, which resulted in a separation of the nose landing gear piston assembly.Mar 18, 2023 · N4064X · Substantial damageNTSB ERA22LA214Accident · No injuriesClass 4 · LimitedFinal reportNorth American SNJ-6 · Greenwood, SCThe loss of directional control due to a fractured tailwheel steering linkage assembly.May 1, 2022 · N451WA · Substantial damageNTSB ERA21LA358Accident · Minor injuriesClass 4 · LimitedFinal reportAlon A2 · Abingdon, VAThe failure of a nosewheel steering actuator arm, which resulted in a loss of control during the landing rollout.Sep 13, 2021 · N5644F · Substantial damageNTSB ERA21LA138Accident · Serious injuriesClass 3 · LimitedFinal reportDassault Mirage F1 B · Panama City, FLNose landing gear contact with a raised aircraft arresting system during takeoff, which damaged components of the nose wheel steering system and resulted in an uncommanded left turn and loss of directional control.Feb 25, 2021 · N601AX · Substantial damage
See all 32 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\", '01023250'))
  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.