Final NTSB investigations: Lycoming IO-360-L2A

8 cases on aircraft whose registry engine model is Lycoming IO-360-L2A, where the defining event was Loss of engine power (total). Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Cases per year

20092026
Final NTSB investigations: Lycoming IO-360-L2A per year, 2009–2026: 8 cases
20091
20101
20121
20171
20214

Latest 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.\"completionStatus\" = 'Completed'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41597')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '341'))
  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.

NTSB ERA21LA388Accident · No injuriesClass 3 · LimitedFinal reportCessna 172 · Port Orange, FLThe separation of the nut from the stud and the fracture of the bolt that secured the crankshaft idler gear to the engine crankcase, which resulted in a total loss of engine power due to the inability of the left crankshaft idler gear assembly to drive of the…Sep 29, 2021 · N116SV · Substantial damageNTSB WPR21LA303Accident · No injuriesClass 3 · LimitedFinal reportCessna 172S · Yelm, WAA total loss of engine power for reasons that could not be determined based on the available evidence.Jun 11, 2021 · N513WF · Substantial damageNTSB ERA21LA187Accident · No injuriesClass 3 · LimitedFinal reportCessna 172S · Venice, FLA total loss of engine power for reasons that could not be determined based on the available information.Apr 17, 2021 · N60457 · Substantial damageNTSB WPR21LA140Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172S · Everett, WAA total loss of engine power during climb, for reasons that could not be determined based on available evidence.Mar 23, 2021 · N2164Z · Substantial damageNTSB CEN17LA311Accident · Minor injuriesLimited investigationFinal reportCessna 172S · Wellston, OHThe failure of a connecting rod small end bushing, which resulted in a loss of engine power.Aug 9, 2017 · N5274Q · Substantial damageNTSB ERA12LA274Accident · No injuriesLimited investigationFinal reportCessna 172S · Daytona Beach, FLA total loss of engine power due to a catastrophic engine failure, the origin of which could not be determined during postaccident examination.Apr 9, 2012 · N375LP · Substantial damageNTSB ERA11LA015Accident · No injuriesLimited investigationFinal reportCessna 172SP · Boynton Beach, FLThe loss of engine power for undetermined reasons.Oct 10, 2010 · N423FT · Substantial damageNTSB CEN09LA442Accident · Minor injuriesLimited investigationFinal reportCessna 172S · Boyd, TXA total loss of engine power due to the pilot's improper leaning procedures, resulting in a forced landing and collision with a fence.Jul 14, 2009 · N2446F · Substantial damage