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Documentation/record keeping, general

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NTSB finding · Organizational issues › Support/oversight/monitoring › Documentation/record keeping

All 12 cases6 in the probable cause
Cases
12
In the probable cause
6 (50%)
Fatal cases
5
NTSB code
04033000

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\", '04033000') 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\", '04033000'))
  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\", '04033000') 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 · 12

NTSB ENG24FA003Incident · No injuriesClass 3 · FieldFinal reportBoeing 767-300F · Memphis, TNA high-pressure fuel leak from a gap in the bolted flange interface between the main fuel pump’s fuel crossover supply tube and the hydromechanical unit idler adapter pad, which resulted in the crossover tube flange bolts partially pulling out and allowing…Oct 18, 2023 · N287FE · Minor damageNTSB DCA19CA192Accident · No injuriesClass 4 · Data collectionFinal reportBoeing 737 · SFO International Airport, CAthe ramp controller directing a Boeing 737 to hold in a location that was marked for a regional jet.Aug 6, 2019 · N37437 · 2 aircraft · Minor damageNTSB WPR18FA143Accident · 1 fatalField investigationFinal reportI.C.A.-Brasov IS 29D · Avenal, CAThe pilot's improper installation of the wings onto the glider, which resulted in an in-flight wing separation. Contributing to the accident were the pilot's limited familiarity with the design and a lack of reliable assembly guidance.May 19, 2018 · N38ES · DestroyedNTSB WPR14LA206Accident · Minor injuriesLimited investigationFinal reportWilliams Helicopter UH 1H · Waitsburg, WAAn extreme vibration immediately after entering forward flight for reasons that could not be determined because postaccident examination of the helicopter did not reveal any anomalies that would have precluded normal operation. Contributing to the accident…May 23, 2014 · N260TA · Substantial damageNTSB CEN14LA235Accident · Minor injuriesLimited investigationFinal reportPazmany PL 4 · Yates City, ILA loss of propeller thrust due to a failure of the reduction drive unit resulting from the improper installation of the unit. Contributing to the accident was a lack of documentation for the reduction drive unit installation.May 10, 2014 · N44PL · Substantial damageNTSB DCA12FA051Accident · 2 fatalClass 1 · FieldFinal reportConvair 440 - NO Series · San Juan, PRthe flight crew's failure to maintain adequate airspeed after shutting down the right engine due to an in-flight fire in one of the right augmentors. The failure to maintain airspeed resulted in either an aerodynamic stall or a loss of directional control.Mar 15, 2012 · N153JR · DestroyedNTSB WPR11MA454Accident · 11 fatalClass 1 · MajorFinal reportNorth American/Aero Classics P-51D · Reno, NVThe reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate…Sep 16, 2011 · N79111 · Substantial damageNTSB ERA10LA041Accident · Serious injuriesLimited investigationFinal reportBoeing 717-200 · Pleasant Grove, NCThe captain's excessive maneuver in response to a traffic alert and collision avoidance system (TCAS) alert, which resulted in a serious injury to a flight attendant. Contributing to the accident was the operator's inadequate TCAS training and guidance.Oct 26, 2009 · N935AT · No damageNTSB ERA09FA497Accident · 1 fatalField investigationFinal reportRobinson R44 · Jackson, MSThe pilot's failure to maintain adequate main rotor rpm, for undetermined reasons.Sep 1, 2009 · N33PX · Substantial damageNTSB ERA09LA477Accident · Serious injuriesLimited investigationFinal reportVollenweider R/Hurst R F Vans RV-9A · Marianna, FLFailure of the propeller speed reduction gearbox for undetermined reasons. Contributing to the accident was the pilot’s decision to disregard the manufacturer's mandate to replace the gearbox, the manufacturer's failure to provide owners with technical…Aug 23, 2009 · N362TS · Substantial damage
See all 12 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\", '04033000'))
  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.