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Ice/rain protection system

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NTSB finding section · Aircraft › Aircraft systems

All 127 cases118 in the probable cause
Cases
127
In the probable cause
118 (93%)
Fatal cases
13
NTSB code
010230

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\", '010230') 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.

Subsections · 7

Query with SQL
duckdb -csv -c "SELECT left(f.\"findingCode\", 8) AS code, max(f.\"tier4Name\") AS name,
    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
  WHERE starts_with(f.\"findingCode\", '010230') AND f.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY 1
  ORDER BY cases DESC, code"

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\", '010230'))
  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\", '010230') 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 · 127

NTSB ANC25LA022Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-18-150 · Anchor Point, AKA complete loss of engine power as a result of carburetor ice due to the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.Feb 28, 2025 · N3798Z · Substantial damageNTSB ERA25LA028Accident · No injuriesClass 3 · LimitedFinal reportCessna 150 · St. Agatha, MEA partial loss of engine power due to carburetor ice as a result of the pilot’s delayed use of carburetor heat while operating in environmental conditions conducive to serious carburetor icing.Oct 26, 2024 · N22197 · Substantial damageNTSB ANC25LA005Accident · No injuriesClass 3 · LimitedFinal reportCessna 150 · Lanai City, HIA partial loss of engine power due to the formation of carburetor ice as a result of the pilot’s improper use of carburetor heat.Oct 25, 2024 · N10495 · Substantial damageNTSB CEN24LA360Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-44-180 · Shakopee, MNThe pilots’ failure to apply carburetor heat during the descent, which resulted in a loss of power on both engines due to carburetor ice.Sep 20, 2024 · N2083D · Substantial damageNTSB ERA24FA371Accident · 4 fatalClass 3 · FieldFinal reportPiper PA28R · Vergennes, VTThe flight instructor’s failure to maintain control of the airplane, which resulted in the airplane exceeding its critical angle of attack and entering an aerodynamic stall. Contributing to the accident was the flight instructor's failure to properly…Sep 8, 2024 · N3757T · Substantial damageNTSB CEN24LA301Accident · Minor injuriesClass 3 · LimitedFinal reportTailwind W10 · West Livingston, TXA partial loss of engine power due to carburetor ice.Aug 3, 2024 · N129WT · Substantial damageNTSB ERA24LA201Accident · No injuriesClass 4 · LimitedFinal reportStinson 108 · Beach City, OHA total loss of engine power due to the due to the pilot’s delayed application of carburetor heat.Apr 25, 2024 · N97517 · Substantial damageNTSB ERA24LA178Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172 · Manassas, VAThe pilot’s failure to apply carburetor heat before reducing engine power during a prolonged descent while operating in environmental conditions conducive to the development of carburetor ice, which resulted in a total loss of engine power due to carburetor…Apr 15, 2024 · N8337X · Substantial damageNTSB WPR24FA124Accident · 1 fatalClass 3 · FieldFinal reportGulfstream 695A · San Bernardino, CAThe pilot’s continued use of the airplane’s autopilot after flight into moderate to severe icing conditions, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.Apr 14, 2024 · N965BC · DestroyedNTSB ERA24LA164Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-24-250 · North Kingstown, RIA total loss of engine power during final approach due to the pilot’s failure to recognize that the environmental conditions were susceptible to carburetor icing and apply carburetor heat, which resulted in the formation of carburetor ice. Contributing to the…Mar 30, 2024 · N7538P · Substantial damage
See all 127 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\", '010230'))
  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.