NTSB finding section · Aircraft › Aircraft power plant

Cases
189
In the probable cause
167 (88%)
Fatal cases
30
NTSB code
010574

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
Cases with Ignition system per year: 189 cases
20088
200914
201018
20118
20128
20136
201413
201513
201612
20179
201810
20197
202010
202111
202210
202320
202411
20251
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\", '010574') 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 · 8

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\", '010574') 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

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\", '010574'))
  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\", '010574') 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 · 189

NTSB CEN25LA243Accident · Serious injuriesClass 4 · LimitedFinal reportStinson 108 · Seguin, TXThe pilot’s failure to turn off the magneto switch before repositioning the propeller by hand which resulted in an inadvertent engine start.Jul 8, 2025 · N97577 · No damageNTSB ERA25LA052Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172S · Chattanooga, TNA partial loss of engine power due to a fouled spark plug in engine’s the No. 4 cylinder. Contributing was the flight instructor’s failure to maintain aircraft control during an attempted go-around following an unsuccessful landing approach in IMC, which…Nov 19, 2024 · N951JA · Substantial damageNTSB ERA25LA056Accident · No injuriesClass 4 · LimitedFinal reportFinn Lassen RV-4 · O'Brien, FLA total loss of engine power and navigational equipment as a result of a faulty battery.Nov 9, 2024 · N214FL · Substantial damageNTSB CEN24LA341Accident · No injuriesClass 3 · LimitedFinal reportTaylorcraft BC12-D · Trojan, SDThe partial loss of engine power due to a loose magneto and subsequent impact with terrain.Sep 7, 2024 · N95078 · Substantial damageNTSB CEN24LA313Accident · No injuriesClass 3 · LimitedFinal reportGrumman G164 · Dyess, ARThe improper overhaul of the carburetor and the malfunction of left magneto which resulted in a partial loss of engine power.Aug 9, 2024 · N6569 · Substantial damageNTSB CEN24LA269Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-36-375 · Avoca, NEA partial loss of engine power due to the loose left magneto which resulted in erratic engine timing.Jul 16, 2024 · N2386X · Substantial damageNTSB WPR24LA205Accident · Minor injuriesClass 3 · LimitedFinal reportReplica PA-12 Replica · Douglas, WYA loss of power due to fuel exhaustion as a result of the pilot’s failure to calibrate the fuel flow indicator.Jun 22, 2024 · N406Z · Substantial damageNTSB ERA24LA230Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-28-151 · Hope Mills, NCA loss of engine performance due to carbon fouling of three spark plugs that, when combined with the airplane’s high gross weight condition, resulted in a collision with trees and terrain.May 26, 2024 · N33563 · Substantial damageNTSB CEN24LA185Accident · Serious injuriesClass 3 · LimitedFinal reportTitan T51 · Novi, MIA failure of the electrical system, resulting in a loss of fuel injection and subsequent loss of engine power.May 12, 2024 · N260Y · Substantial damageNTSB ANC24LA025Accident · No injuriesClass 3 · LimitedFinal reportCessna 120 · Talkeetna, AKA degraded ignition system, which resulted in a total loss of engine power. Contributing to the accident was maintenance personnel’s inadequate inspection of the ignition system.Apr 21, 2024 · N77032 · Substantial damage
See all 189 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\", '010574'))
  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.