NTSB investigations: Lycoming IO-540-AE1A5
7 cases on aircraft whose registry engine model is Lycoming IO-540-AE1A5, where the defining event was Miscellaneous/other. 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
| 2011 | 1 |
|---|---|
| 2013 | 2 |
| 2014 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2025 | 1 |
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 ('41899')
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\" = '900'))
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 ('41899')
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" = '900'))
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 WPR25LA110Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Las Vegas, NVThe pilot’s loss of helicopter control after the door opened during takeoff. Contributing to the accident was the pilot’s failure to confirm that the door was properly closed before departure.NTSB GAA19CA066Accident · No injuriesData collectionFinal reportRobinson R44 · Lihue, HIThe passenger’s improper decision to hold her cell phone outside the helicopter, which resulted in it departing the helicopter and striking the tail rotor.NTSB GAA18CA066Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · New Orleans, LAThe pilot’s failure to land the helicopter with both skids on the trailer platform, which resulted in a loss of control.NTSB CEN14LA197Accident · No injuriesLimited investigationFinal reportRobinson R44 - II · Menard, TXThe pilot’s inadequate recovery from a practice autorotation, which resulted in an improper touchdown attitude and collision with terrain.NTSB WPR13FA264Accident · Minor injuriesField investigationFinal reportRobinson Helicopter R44 II · Los Angeles, CAThe pilot’s loss of helicopter control following a precautionary landing, which resulted in a dynamic rollover.NTSB ERA13LA152Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Ciales, PRA loss of main rotor rpm for reasons that could not be determined because an examination of the helicopter’s engine and associated components did not reveal any mechanical malfunctions or failures that would have precluded normal operation.NTSB ERA11CA180Accident · Serious injuriesData collectionFinal reportRobinson Helicopter R44 II · Weston, FLThe pilot's failure to maintain adequate altitude and physical alertness which resulted in an in-flight collision with the water. Contributing to the accident was the pilot's fatigue.