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NTSB finding · Aircraft › Aircraft systems › Equipment/furnishings

All 24 cases16 in the probable cause
Cases
24
In the probable cause
16 (67%)
Fatal cases
8
NTSB code
01022520

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\", '01022520') 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\", '01022520'))
  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\", '01022520') 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 · 24

NTSB WPR23LA078Accident · Serious injuriesClass 3 · LimitedFinal reportAirbus Helicopters EC 130 T2 · Boulder City, NVThe pilot’s failure to apply anti-torque pedal input in a sufficient, timely, and sustained manner while attempting to arrest a turn during a hover-taxi, which resulted in a loss of directional control. Contributing to the severity of the occupants’ injuries…Dec 28, 2022 · N835GC · Substantial damageNTSB CEN22LA166Accident · Serious injuriesClass 4 · LimitedFinal reportBeech B200 · Odessa, TXThe airplane’s encounter with severe clear air turbulence that was not forecasted, which resulted in a serious injury to an unrestrained passenger.Mar 29, 2022 · N469SL · No damageNTSB WPR20FA051Accident · No injuriesClass 3 · FieldFinal reportCirrus SF50 · Santa Monica, CAThe improper design of the audio interface system, which caused an electrical short circuit that led to a ground fire.Dec 27, 2019 · N52CV · Substantial damageNTSB ANC18FA044Accident · 2 fatalClass 2 · FieldFinal reportPiper PA18 · Sitka, AKThe pilot's exceedance of the airplane's critical angle of attack for unknown reason, which resulted in an aerodynamic stall and a loss of control.Jun 9, 2018 · N1203A · Substantial damageNTSB ERA18MA099Accident · 5 fatalClass 1 · MajorFinal reportAmerican Eurocopter AS350B2 · New York, NYLiberty Helicopters Inc.'s use of a NYONair-provided passenger harness/tether system, which caught on and activated the floor-mounted engine fuel shutoff lever and resulted in the in-flight loss of engine power and the subsequent ditching. Contributing to…Mar 11, 2018 · N350LH · Substantial damageNTSB ANC16LA022Accident · Serious injuriesLimited investigationFinal reportAirbus AS350 · Juneau, AKThe pilot's failure to maintain terrain clearance while on approach to land in flat light conditions. Contributing to the severity of the pilot's injuries was the inadequately restrained internal cargo, which shifted forward during the impact and struck the…May 5, 2016 · N194EH · Substantial damageNTSB WPR16FA095Accident · 1 fatalField investigationFinal reportMooney M20K · Woodland, WAThe pilot's delay in recognizing that the airplane was not performing as expected and aborting the takeoff, which resulted in collision with a berm beyond the end of the runway. Contributing to the accident were the pilot's exceedance of the airplane's gross…Apr 21, 2016 · N97119 · Substantial damageNTSB WPR16FA055Accident · Serious injuriesField investigationFinal reportAirbus EC130 · Hanalei, HIThe fatigue failure of the engine fuel pipe as a result of vibration caused by a worn starter-generator front bearing support, which excited the fuel pipe and caused it to oscillate at a resonant frequency, and a subsequent loss of engine power due to fuel…Jan 18, 2016 · N11VQ · Substantial damageNTSB CEN15CA324Accident · Serious injuriesData collectionFinal reportAero Commander 100 · San Antonio, TXThe pilot's improper decision to attempt flight with an unairworthy airplane and improper starting procedure that resulted in an uncontrolled takeoff without the pilot aboard. Contributing was the inoperative airplane battery/engine starter.Jul 23, 2015 · N5542M · Substantial damageNTSB DCA15CA152Accident · Serious injuriesData collectionFinal reportAirbus Industrie A320 212 · Boston, MAan inadvertent fall by the passenger while exiting the lavatory when the seat belt light was illuminated.Jun 29, 2015 · N335NW · No damage
See all 24 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\", '01022520'))
  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.