NTSB investigations: Lycoming IO-540 series
18 cases on aircraft whose registry engine model is Lycoming IO-540 series, where the defining event was Unknown or undetermined. 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
| 2009 | 1 |
|---|---|
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 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\" = '000'))
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" = '000'))
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 GAA26WA181Incident · No injuriesClass 5 · ForeignPiper PA-23-250 · Cumayasa, La Romana, Dominican RepublicNTSB CEN26FA147Accident · 1 fatalClass 3 · FieldPreliminary reportExperimental Homebuilt Airshark · Statesboro, GAOn March 25, 2026, about 1453 eastern daylight time, an experimental homebuilt Airshark airplane, N220AS, was substantially damaged when it was involved in an accident near Statesboro, Georgia. The pilot was fatally injured. The airplane was operated as a…NTSB ERA23LA359Accident · No injuriesClass 4 · LimitedFinal reportAero Commander 500 S · Key West, FLA total loss of engine power for reasons that could not be determined.NTSB CEN23LA268Accident · Serious injuriesClass 3 · LimitedFinal reportVelocity Velocity XL · Tahlequah, OKA total loss of engine power for undetermined reasons.NTSB ERA23LA148Accident · Serious injuriesClass 3 · LimitedFinal reportVelocity Velocity SE · Bahia Key, FLA total loss of engine power for undetermined reasons.NTSB CEN23LA022Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-32R-300 · Evansville, INThe total loss of engine power for reasons that could not be determined based on the available evidence.NTSB ERA22LA366Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32RT · Wilmington, NCA partial loss of engine power during initial climb for reasons that could not be determined.NTSB CEN22LA247Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32R-301 · Olla, LAThe partial loss of engine power for undetermined reasons.NTSB WPR22LA127Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-32R-300 · St. George, UTThe total loss of engine power for undetermined reasons.NTSB CEN21LA321Accident · No injuriesClass 4 · LimitedFinal reportSwann Lynn J Seawind 3000 · Charlevoix, MIThe loss of engine power for undetermined reasons based on available evidence.NTSB WPR20FA013Accident · 2 fatalClass 3 · FieldFinal reportRobinson R44 · Las Vegas, NVAn undetermined inflight event that resulted in the pilot performing an autorotation to uneven terrain for reasons that could not be determined due to the extent of impact damage.NTSB CEN20LA021Accident · 1 fatalClass 3 · LimitedFinal reportPiper PA23 · (Gulf of Mexico)The airplane’s descent into the ocean for reasons that could not be determined.NTSB WPR19FA188Accident · 1 fatalClass 3 · FieldFinal reportRobinson R44 · Hayward, CAThe pilots’ loss of control during a low altitude maneuver for undetermined reasons, which resulted in impact with terrain.NTSB CEN18LA069Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Albany, TXA loss of helicopter control for reasons that could not be determined because postaccident examination did not reveal any evidence of mechanical malfunctions or failures of the main rotor and tail rotor systems that would have precluded normal operation.NTSB ERA15WA355Accident · 2 fatalForeign investigationSmith AEROSTAR600 · Santa Fé de Antioquia, ColombiaNTSB ERA14WA148Accident · 1 fatalForeign investigationZivko Aeronautics Edge 540T · Al Khor, QatarOn March 17, 2014, about 1725 local time, a Zivko Aeronautics Edge 540T, N149WA, was substantially damaged when it collided with the ground during an airshow performance at Al Khor Airport (OTBK), Al Khor, Qatar. The commercial pilot was fatally injured. The…NTSB ERA13FA109Accident · 2 fatalField investigationFinal reportBenton Fred D Seawind 3000 · Sarasota, FLThe pilot's inability to establish a normal climb rate after takeoff for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB ERA09LA410Accident · No injuriesLimited investigationFinal reportRobinson R44 · Silver Spring, PAThe student pilot's inability to fully control the helicopter, during cruise and the resultant off-field hard landing.