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Scheduled maint checks

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

All 76 cases56 in the probable cause
Cases
76
In the probable cause
56 (74%)
Fatal cases
14
NTSB code
01010520

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\", '01010520') 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\", '01010520'))
  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\", '01010520') 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 · 76

NTSB CEN23LA255Accident · Serious injuriesClass 4 · LimitedFinal reportPiper PA-25-235 · Westhope, NDThe pilot’s failure to maintain aircraft control that resulted in an impact with terrain after takeoff.Jun 22, 2023 · N7419Z · Substantial damageNTSB CEN23LA062Accident · Serious injuriesClass 3 · LimitedFinal reportMooney M20K · Addison, TXThe fatigue failure of the engine’s camshaft gear teeth which resulted in a loss of all engine power. Contributing to the accident was the non-compliance with the engine manufacturer’s recommended service bulletin.Dec 13, 2022 · N231GZ · Substantial damageNTSB ERA22LA410Accident · No injuriesClass 3 · LimitedFinal reportCessna U206 · Buckland, AKThe installation of incompatible rocker arms and rocker arm bushings during an engine overhaul, which resulted in a complete loss of engine power.Sep 9, 2022 · N8019Z · Substantial damageNTSB ERA22LA194Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-28-140B · Panama City, FLA total loss of engine power due to fuel contamination. Contributing to the accident was the inadequate maintenance and inspection of the airplane and engine by maintenance personnel, and the pilot’s inadequate preflight inspection and runup.Apr 18, 2022 · N8891N · Substantial damageNTSB DCA21FA085Incident · No injuriesClass 3 · FieldFinal reportBoeing 777-222 · Broomfield, COThe fatigue failure of the right engine fan blade. Contributing to the fan blade failure was the inadequate inspection of the blades, which failed to identify low-level indications of cracking, and the insufficient frequency of the manufacturer’s inspection…Feb 20, 2021 · N772UA · Minor damageNTSB ERA21LA106Accident · No injuriesClass 3 · LimitedFinal reportAmerican AA5 · Leesburg, VAThe weakened structure of the left horizontal stabilizer, which resulted in elevator flutter and subsequent partial separation of the left elevator in flight. Contributing to the accident were the lack of elevator authority while landing due to the damaged…Jan 19, 2021 · N5880L · Substantial damageNTSB CEN21LA030Accident · 1 fatalClass 3 · LimitedFinal reportCessna 210 · Lubbock, TXThe pilot’s improper decision to fly into icing conditions with an airplane that was not equipped for icing, which led to structural icing and a subsequent loss of airplane control, and the pilot’s impairment from carbon monoxide poisoning due to a cracked…Oct 26, 2020 · N9622T · DestroyedNTSB CEN20LA322Accident · Serious injuriesClass 3 · LimitedFinal reportQuad City Challenger · Jonesboro, LALoss of engine power due to the use of improper fuel in the airplane by the non-certificated pilot.Aug 2, 2020 · N990SS · Substantial damageNTSB ERA20LA271Accident · 1 fatalClass 3 · LimitedFinal reportAmerican AA 5 · Dunnellon, FLA total loss of engine power due to fuel starvation as a result of improper installation and inspection of the airplane’s fuel system. Contributing to the accident was the pilot’s lack of certification and knowledge in aircraft maintenance.Aug 1, 2020 · N7192L · Substantial damageNTSB ERA18FA264Accident · 2 fatalField investigationFinal reportDassault Falcon 50 · Greenville, SCThe operator's decision to allow a flight in an airplane with known, unresolved maintenance discrepancies, and the flight crew's failure to properly configure the airplane in a way that would have allowed the emergency or parking brake systems to stop the…Sep 27, 2018 · N114TD · Substantial damage
See all 76 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\", '01010520'))
  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.