NTSB finding · Aircraft › Aircraft power plant › Engine (reciprocating)

Cases
497
In the probable cause
444 (89%)
Fatal cases
87
NTSB code
01058500

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 Engine (reciprocating), general per year: 497 cases
200822
200924
201039
201145
201226
201320
201424
201518
201618
201721
201820
201928
202020
202138
202239
202355
202432
20257
20261
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\", '01058500') 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

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\", '01058500'))
  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\", '01058500') 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 · 497

NTSB CEN26LA144Accident · Serious injuriesClass 4 · LimitedFinal reportMooney M20 · Northlake, TXThe pilot’s inadequate fuel management which resulted in a total loss of engine power due to fuel starvation.Mar 18, 2026 · N1374W · Substantial damageNTSB WPR26LA072Accident · No injuriesClass 4 · LimitedFinal reportZenith 750 · Yacolt, WAA loss of engine power for undetermined reasons.Dec 23, 2025 · N186BG · Substantial damageNTSB ERA26LA002Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-260 · Parkland, FLThe pilot’s failure to retract the amphibious airplane’s landing gear before conducting a forced landing on the water, which resulted in a nose over.Oct 4, 2025 · N368FS · Substantial damageNTSB CEN25LA401Accident · No injuriesClass 3 · LimitedFinal reportCubCrafters CCK-2000 · Thompsonville, MIA total loss of engine power due to a lack of ignition resulting from a fractured alternator ring terminal and the builder’s incorrect installation of the wire connecting to the alternator. Contributing to the total loss of engine power was the failure of the…Sep 7, 2025 · N40DT · Substantial damageNTSB 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 ERA25LA238Accident · No injuriesClass 3 · LimitedFinal reportCessna 310 · Fayetteville, TNThe pilot’s decision to operate the airplane with known discrepancies.Jun 24, 2025 · N5045Q · Substantial damageNTSB CEN25LA160Accident · No injuriesClass 4 · LimitedFinal reportGrumman G164 · Louise, TXThe reported loss of engine power for undetermined reasons.Apr 18, 2025 · N5416 · Substantial damageNTSB ANC25LA019Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-18-150 · Wasilla, AKA total loss of engine power for undetermined reasons.Feb 21, 2025 · N2447J · Substantial damageNTSB CEN25LA058Accident · Serious injuriesClass 3 · LimitedFinal reportVans RV8 · Smithville, TXA loss of engine power for undetermined reasons.Dec 10, 2024 · N42CS · Substantial damageNTSB WPR25LA039Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA32-300 · Pomona, CAA total loss of engine power during final approach for reasons that could not be determined.Nov 17, 2024 · N617ET · Substantial damage
See all 497 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\", '01058500'))
  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.