NTSB finding · Aircraft › Aircraft systems › Landing gear system
- Cases
- 54
- In the probable cause
- 53 (98%)
- Fatal cases
- 0
- NTSB code
- 01023233
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
| 2008 | 1 |
|---|---|
| 2009 | 5 |
| 2010 | 3 |
| 2011 | 7 |
| 2012 | 4 |
| 2013 | 5 |
| 2014 | 3 |
| 2015 | 3 |
| 2017 | 6 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Where
Open the mapQuery 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\", '01023233') 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.
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", '01023233') AND c."eventDate" >= DATE '2000-01-01' GROUP BY 1 ORDER BY 1
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
In the same cases
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\", '01023233'))
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\", '01023233') 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.
WITH matched AS (SELECT DISTINCT case_mkey, aircrafts_position FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' WHERE starts_with("findingCode", '01023233'))
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", '01023233') 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 DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Newest cases · 54
NTSB ERA26LA043Accident · No injuriesClass 4 · LimitedFinal reportBeech 95-B55 · Dothan, ALThe failure of the left main landing gear actuator rods, which resulted in a gear up landing.NTSB WPR24LA126Accident · No injuriesClass 3 · LimitedFinal reportCessna P210N · Auburn, WAAn overstress fracture of the left main landing gear actuator, which resulted in the failure of the left main landing gear to fully extend and lock into place.NTSB ERA24LA170Accident · No injuriesClass 4 · LimitedFinal reportBeta Biz LX7 · Huntsville, ALThe failure of the nose landing gear actuator forward hydraulic fitting, which resulted in a main landing gear collapse during landing due to the loss of hydraulic fluid and pressure.NTSB ERA24LA138Accident · No injuriesClass 4 · LimitedFinal reportPiper PA24 · Stafford, VAAn overloading of the landing gear push/pull cable rod ends, which resulted in the landing gear being seized in an intermediate position during the subsequent landing.NTSB CEN24LA018Accident · No injuriesClass 3 · LimitedFinal reportCessna 210B · Pueblo, COThe fatigue failure of the right main landing gear hydraulic actuator, which resulted in a loss of hydraulic fluid that prevented the pilot from lowering the landing gear to the fully extended position.NTSB WPR23LA213Accident · No injuriesClass 3 · LimitedFinal reportCessna 210 · Tacoma, WAA fatigue failure of the left main landing gear hydraulic actuator, which resulted in a loss of hydraulic fluid that prevented the pilot from lowering the landing gear to the fully extended position and maintaining directional control after landing.NTSB WPR23LA012Accident · No injuriesClass 3 · LimitedFinal reportCessna T210L · Marana, AZA failure of a retaining ring in the airplane’s left main landing gear door actuator and the subsequent complete loss of hydraulic fluid, which resulted in a gear-up landing.NTSB WPR22LA226Accident · No injuriesClass 3 · LimitedFinal reportCessna TR182 · Santa Barbara, CAA failure of the right main landing gear actuator pressure line O-ring, which resulted in a gear-up landing on the runway.NTSB ERA22LA282Accident · No injuriesClass 3 · LimitedFinal reportCessna 414 · Jasper, GAThe failure of the owner to comply with a service bulletin, which resulted in the failure of the left main landing gear torque tube due to fatigue cracking.NTSB ERA22LA319Accident · No injuriesClass 4 · LimitedFinal reportMooney M20J · Charleston, SCThe failure of the torsion spring inside the drive clutch assembly of the landing gear actuator which prevented normal and manual extension of the landing gear.
See all 54 casesQuery 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\", '01023233')) 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.
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", '01023233')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.