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Incomplete action

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NTSB finding · Personnel issues › Action/decision › Action

All 106 cases102 in the probable cause
Cases
106
In the probable cause
102 (96%)
Fatal cases
14
NTSB code
02041040

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\", '02041040') 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\", '02041040'))
  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\", '02041040') 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 · 106

NTSB WPR26LA243Accident · No injuriesClass 4 · LimitedFinal reportValerie Westedt Zenith Zodiac 650B · Colorado Springs, COThe pilot’s improper flare which resulted in a hard landing and their subsequent loss control of during a go-around. Contributing to the accident was the flight instructor’s inadequate remedial action.Jul 5, 2026 · N452VC · Substantial damageNTSB WPR26LA102Accident · No injuriesClass 4 · LimitedFinal reportCessna 172M · Nampa, IDThe pilot’s failure to verify that the seat locking pins were fully engaged before takeoff, which allowed the seat to slide aft during the takeoff roll and resulted in a loss of directional control.Feb 5, 2026 · N4464R · Substantial damageNTSB WPR25LA122Accident · No injuriesClass 3 · LimitedFinal reportBeech C90A · Helena, MTThe failure of the left main landing gear to fully extend and lock as a result of broken downlock switch wires and the failure of the pilots to complete the manual gear extension checklist.Mar 16, 2025 · N513JM · Substantial damageNTSB CEN25LA079Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-24-250 · Tyler, TXAn electrical system surge for a reason that could not be determined that resulted in an overvoltage event, internal damage to electronics equipment, smoke in the cockpit, and a gear up landing.Jan 15, 2025 · N8051P · Substantial damageNTSB ERA25LA105Accident · No injuriesClass 4 · LimitedFinal reportPiper PA44 · Fairfield, NJThe pilot’s failure to extend the landing gear prior to landing, which resulted in a gear up landing. Contributing to the accident was the flight instructor’s inadequate supervision of the pilot receiving instruction.Jan 12, 2025 · N711AV · Substantial damageNTSB WPR25LA070Accident · Minor injuriesClass 3 · LimitedFinal reportVans RV-7A · Gila Bend, AZA disconnection of the mixture control linkage during flight, which resulted in fuel starvation and a total loss of engine power. Contributing was the inadequate inspection of the mixture control arm attachment hardware.Dec 22, 2024 · N1FB · Substantial damageNTSB ERA25LA016Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-151 · Newnan, GAThe pilot’s inadequate use of carburetor heat during the engine run-up, which resulted in a partial loss of power due to carburetor icing during takeoff.Oct 16, 2024 · N41370 · Substantial damageNTSB ERA24LA336Accident · No injuriesClass 4 · LimitedFinal reportCessna 172N · Immokalee, FLThe student pilot’s (of the high wing airplane) inadequate visual lookout, which resulted in a ground collision with another airplane while taxiing.Jul 28, 2024 · N734BH · 2 aircraft · Substantial damageNTSB DCA24FA143Accident · Serious injuriesClass 3 · FieldFinal reportBoeing 737-7CT · Gulf of America (Gulf of Mexico)The pilot’s inadvertent encounter with convectively induced turbulence from a broken line of embedded thunderstorms moving across the region. Contributing to the accident was the failure of the air traffic controller to issue pertinent weather information…Apr 3, 2024 · N567WN · No damageNTSB CEN24LA128Accident · No injuriesClass 3 · LimitedFinal reportEurocopter Deutschland MBB-BK 117 C-2 · West Lafayette, INThe failure of maintenance personnel to properly install the tail rotor pitch change slider attachment hardware (T-bolt), which led to the disconnection of the pitch change slider, a loss of tail rotor control, and subsequent hard landing. Contributing to the…Mar 7, 2024 · N191LL · Substantial damage
See all 106 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\", '02041040'))
  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.