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NTSB finding · Aircraft › Aircraft handling/service › Maintenance/inspections

All 17 cases6 in the probable cause
Cases
17
In the probable cause
6 (35%)
Fatal cases
2
NTSB code
01010510

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\", '01010510') 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\", '01010510'))
  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\", '01010510') 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 · 17

NTSB CEN25LA013Accident · Minor injuriesClass 3 · LimitedFinal reportRotorway Exec · Plymouth, INA loss of control due to the failed forward tail rotor belt as a result of the owner’s failure to follow the helicopter manufacturer’s tail rotor belt replacement recommendations.Oct 11, 2024 · N314AC · Substantial damageNTSB WPR24LA260Accident · No injuriesClass 3 · LimitedFinal reportKitfox Series V · La Grande, ORSeparation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts.Jul 23, 2024 · N53562 · Substantial damageNTSB WPR23LA160Accident · No injuriesClass 3 · LimitedFinal reportRemos Remos GX · Glendale, AZA total loss of engine power caused by fatigue cracking and fracture of the crankshaft. Contributing to the accident was the operator’s failure to properly maintain the airplane.Apr 18, 2023 · N21GX · Substantial damageNTSB CEN23LA040Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 150L · Cypress, TXFailure of the engine exhaust valve during cruise flight, which resulted in a loss of engine power and a forced landing.Nov 20, 2022 · N10612 · Substantial damageNTSB ERA22LA139Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 152 · Madisonville, TNA partial loss of engine power for undetermined reasons.Feb 28, 2022 · N68218 · Substantial damageNTSB WPR19LA128Accident · No injuriesClass 3 · LimitedFinal reportBeech 35 · Sedona, AZThe partial loss of engine power due to deteriorated O-rings in the throttle metering assembly. Contributing to the accident was non-compliance with the manufacturer's recommended throttle metering assembly overhaul schedule.May 1, 2019 · N6864Q · Substantial damageNTSB CEN18LA114Accident · Minor injuriesLimited investigationFinal reportBeech 77 · Odessa, TXThe pilot’s improper takeoff procedures and his failure to abort the takeoff, which resulted in an aerodynamic stall and subsequent impact with terrain. Contributing to the accident was the pilot’s lack of experience in the airplane.Mar 1, 2018 · N6699B · Substantial damageNTSB CEN17LA351Accident · No injuriesLimited investigationFinal reportCessna 340 · McKinney, TXThe failure of the bell crank pivot bolt which resulted in the left main landing gear collapse. Contributing to the accident was the lack of landing gear inspections in accordance with the airplane manufacturer's maintenance manuals.Sep 9, 2017 · N5870M · Substantial damageNTSB CEN17LA309Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-802A · Galesburg, ILA total loss of engine power due to the fracture of a single 1st stage compressor rotor airfoil in high-cycle fatigue as a result of the erosion and thinning of the airfoil's leading edge. Contributing to the fractured airfoil and loss of engine power was the…Aug 9, 2017 · N528MB · Substantial damageNTSB WPR15LA025Accident · No injuriesLimited investigationFinal reportCessna 172S · Santa Monica, CAThe separation of a section of a propeller blade due to fatigue cracking. Contributing to the accident was the operator’s failure to comply with the manufacturer’s maintenance and inspection instructions.Oct 26, 2014 · N353MV · Substantial damage
See all 17 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\", '01010510'))
  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.