Fatal NTSB investigations: Lycoming IO-540-AB1A5
9 cases on aircraft whose registry engine model is Lycoming IO-540-AB1A5. 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
| 2003 | 1 |
|---|---|
| 2013 | 1 |
| 2016 | 2 |
| 2020 | 2 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 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.\"highestInjuryLevel\" = 'Fatal'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41808'))
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."highestInjuryLevel" = 'Fatal'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41808'))
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 ANC26FA039Accident · 2 fatalClass 3 · FieldPreliminary reportCessna 182T · Armistead, CAOn May 7, 2026, about 1055 pacific daylight time (PDT), a Cessna 182T airplane, N227TF, was destroyed when it was involved in an accident near Armistead, California. The flight instructor and the pilot receiving instruction were fatally injured. The airplane…NTSB GAA26WA014Accident · 1 fatalClass 5 · ForeignTextron 182T · Nuuk, GreenlandNTSB CEN25FA047Accident · 2 fatalClass 3 · FieldFinal reportCessna 182T · Drake, COThe pilot’s failure to maintain airplane control while maneuvering in mountainous terrain. Contributing was mountain wave turbulence in the area.NTSB WPR21FA048Accident · 1 fatalClass 3 · FieldFinal reportCessna 182 · Los Angeles, CAMaintenance personnel’s failure to properly secure the throttle control hardware during recent maintenance, which resulted in its disconnection and a subsequent loss of engine power on approach for landing.NTSB CEN20FA075Accident · 3 fatalClass 3 · FieldFinal reportCessna 182 · Chatham, LAThe pilot’s encounter with icing in-flight, which resulted in a loss of control and impact with terrain.NTSB CEN16FA373Accident · 2 fatalField investigationFinal reportCessna 182 · Ephraim, WIThe pilot's improper decision to execute a maneuvering approach at low altitude during night conditions, which resulted in controlled flight into terrain.NTSB ERA16FA100Accident · 2 fatalField investigationFinal reportCessna 182 · Mobile, ALThe pilot's loss of airplane control during a missed approach in instrument meteorological conditions due to spatial disorientation. Contributing to the accident was the pilot's inadequate preflight and inflight weather planning which resulted the pilot's…NTSB CEN13FA269Accident · 2 fatalField investigationFinal reportCessna 182T · Fredericksburg, TXThe pilot’s failure to maintain airspeed while transitioning from instrument to visual flight while still in instrument conditions, which resulted in an inadvertent stall.NTSB FTW03FA114Accident · 1 fatalField investigationFinal reportCessna 182S · Fayetteville, ARThe pilot's failure to fly a stabilized, published instrument approach procedure, which resulted in a collision with trees and terrain. Factors were the low clouds and night conditions.