NTSB investigations: Lycoming IO-540 series
17 cases on aircraft whose registry engine model is Lycoming IO-540 series, where the defining event was Loss of engine power (partial). 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
| 2008 | 1 |
|---|---|
| 2010 | 2 |
| 2011 | 1 |
| 2013 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 1 |
| 2026 | 2 |
Where
Open the mapLatest 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585')
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\" = '342'))
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.
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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585')
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" = '342'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ERA26LA296Accident · Serious injuriesClass 3 · LimitedInvestigation openPiper PA32 · Dawsonville, GANTSB ANC26LA029Accident · No injuriesClass 3 · LimitedPreliminary reportMaule M-7-235 · Wasilla, AKOn April 3, 2026, at 1300 Alaska daylight time, a Maule M 7 235 airplane, N93ML, was substantially damaged during an accident near Wasilla, Alaska. The pilot and one passenger were not injured. The airplane was operated as a personal flight under the…NTSB WPR26LA020Accident · 3 fatalClass 3 · LimitedPreliminary reportPiper PA-23-250 · Condon, MTOn October 17, 2025, about 1615 mountain daylight time, a Piper PA-23-250, N2345R, was substantially damaged when it was involved in an accident near Condon, Montana. The pilot and two passengers were fatally injured. The airplane was operated as a Title 14…NTSB CEN22LA429Accident · No injuriesClass 3 · LimitedFinal reportCommander 114TC · Savoy, TXA loss of engine power for reasons that could not be determined.NTSB CEN21LA273Accident · No injuriesClass 3 · LimitedFinal reportTony Dubeansky RV10 · Fort Worth, TXA partial loss of engine power due to a separated electronic ignition system connector. Contributing to the accident was the location of the ignition boxes, which provided limited access to the connectors for visual inspection.NTSB CEN18LA382Accident · Minor injuriesLimited investigationFinal reportCessna 206 · Sugar Land, TXFatigue failure of the No. 1 cylinder intake valve, which resulted in the loss of engine power.NTSB WPR17LA188Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 II · El Dorado Hills, CAMaintenance personnel's inadequate routine maintenance on the helicopter engine, which led to low cylinder compression, improper magneto timing, and camshaft lobe wear, which subsequently resulted in degraded engine performance.NTSB CEN17LA271Accident · No injuriesLimited investigationFinal reportPiper PA 32-300 · Rushville, INThe pilot’s inability to properly control engine power because of an improperly installed throttle control arm, which resulted in a partial loss of engine power and led to a forced landing.NTSB ERA17LA169Accident · No injuriesLimited investigationFinal reportPiper PA32RT · Coral Springs, FLThe in-flight disconnection of the fuel injection servo throttle linkage, which resulted in a loss of engine power.NTSB ERA17LA019Accident · No injuriesLimited investigationFinal reportCessna 182 · Toone, TNA stuck No. 3 cylinder exhaust valve, which resulted in failure of the cylinder's valvetrain components, breach of the cylinder's rocker box cover, and partial loss of engine power due to oil starvation.NTSB CEN15LA170Accident · No injuriesLimited investigationFinal reportMaule M 7-260C · Oregon, MOEngine vibration for reasons that could not be determined based on the available evidence.NTSB CEN13LA201Accident · No injuriesLimited investigationFinal reportPiper PA23-250 · Winsted, MNThe obstruction of the right engine’s induction air system by ice, which resulted in a loss of engine power.NTSB CEN13FA182Accident · Minor injuriesField investigationFinal reportAero Commander 500B · Broomfield, COLoss of engine power due to fuel exhaustion. Contributing to the accident was the failure of the fuel gauge to indicate the actual amount of fuel on board the airplane and the design of the airplane's fuel system, which precluded a visual confirmation of the…NTSB ANC11CA075Accident · No injuriesData collectionFinal reportPiper PA-32-301 · Kodiak, AKA partial loss of engine power while on approach to land due to a disconnected throttle control linkage, and the maintenance director's inadequate inspection of the throttle linkage during maintenance.NTSB WPR10LA420Accident · Serious injuriesLimited investigationFinal reportRobinson R44 · San Diego, CAThe pilot's failure to utilize carburetor heat during initial climb, which resulted in a loss of engine power due to carburetor icing.NTSB CEN10LA496Accident · No injuriesLimited investigationFinal reportCessna 182T · Mosby, MTA partial loss of engine power for undetermined reasons during an en route climb.NTSB CHI08LA180Accident · Minor injuriesLimited investigationFinal reportSmith Aerostar 601P · Alexandria, MNThe loss of engine power for undetermined reasons. Contributing to the accident was the unsuitable terrain for the forced landing.