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Carbon monoxide

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NTSB finding · Personnel issues › Physical › Impairment/incapacitation

All 12 cases
Cases
12
In the probable cause
12 (100%)
Fatal cases
11
NTSB code
02012040

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\", '02012040') 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\", '02012040'))
  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\", '02012040') 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 ERA22FA114Accident · 1 fatalClass 3 · FieldFinal reportCessna 310 · Danville, VAThe pilot’s impairment due to exposure to carbon monoxide as a result of undetected engine exhaust penetration into the cockpit, resulting in the pilot's failure to maintain a minimum controllable airspeed after partially securing an engine after takeoff.Feb 1, 2022 · N622QT · DestroyedNTSB CEN21LA070Accident · 2 fatalClass 3 · LimitedFinal reportPiper PA38 · Franklin, ARThe impairment of both pilots from carbon monoxide exposure due to a degraded muffler. Contributing to the accident was the inadequate maintenance inspection, which failed to detect the degraded muffler.Nov 30, 2020 · N9879T · DestroyedNTSB 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 ERA20FA068Accident · 1 fatalClass 3 · FieldFinal reportCessna 172 · Newborn, GAThe pilot’s impairment/incapacitation from carbon monoxide poisoning due to a degraded muffler. Contributing to the accident was the pilot’s failure to properly maintain the airplane.Jan 6, 2020 · N1612F · DestroyedNTSB ERA20FA031Accident · 1 fatalClass 3 · FieldFinal reportCessna 150 · New Bedford, MAPilot impairment due to exposure to carbon monoxide as a result of undetected corrosion and holes in the engine’s left exhaust muffler.Nov 4, 2019 · N714LK · DestroyedNTSB WPR19FA022Accident · 4 fatalClass 2 · FieldFinal reportPiper PA28 · Guthrie Center, IAPilot incapacitation due to carbon monoxide poisoning as a result of an undetected crack in an engine exhaust muffler, which permitted entry of exhaust gasses into the cabin via the cabin heat system.Nov 9, 2018 · N91770 · Substantial damageNTSB CEN17FA207Accident · 1 fatalField investigationFinal reportVarga 2150A · Bowling Green, OHThe pilot's loss of control due to impairment from carbon monoxide poisoning. Contributing to the accident was the corrosion of the heat exchanger and the failure of maintenance personnel to adequately inspect and repair or replace the exchanger during the…Jun 1, 2017 · N4635V · Substantial damageNTSB CEN17LA101Accident · Serious injuriesLimited investigationFinal reportMooney M20C · Ellendale, MNThe pilot’s incapacitation from carbon monoxide poisoning in flight due to cracks in the exhaust muffler, which resulted in the airplane’s continued flight until it ran out of fuel and its subsequent collision with terrain.Feb 3, 2017 · N9149V · Substantial damageNTSB ANC16FA065Accident · 1 fatalField investigationFinal reportHefty Polar Cub · Anchorage, AKThe pilot's severe impairment from carbon monoxide poisoning in flight, which resulted in a loss of control and a subsequent collision with trees and terrain.Sep 11, 2016 · N62905 · DestroyedNTSB CEN16FA130Accident · 1 fatalField investigationFinal reportAeronca 7AC · Ellsworth, NEThe pilot's impairment due to carbon monoxide poisoning from a known cracked engine exhaust muffler, which resulted in a loss of aircraft control. Contributing to the accident was the pilot's decision to continue flying the airplane without properly repairing…Mar 20, 2016 · N84580 · Destroyed
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\", '02012040'))
  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.