NTSB investigations: Amateur-built UNKNOWN ENG
23 cases on aircraft whose registry engine model is Amateur-built UNKNOWN ENG, where the defining event was Low altitude operation/event. 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 | 3 |
|---|---|
| 2009 | 3 |
| 2010 | 4 |
| 2012 | 1 |
| 2013 | 1 |
| 2015 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2022 | 2 |
| 2024 | 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 ('99999')
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\" = '220'))
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 ('99999')
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" = '220'))
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 WPR25LA112Accident · Serious injuriesClass 4 · LimitedFinal reportEnstrom 280FX · Waterford, CAThe pilot’s failure to maintain clearance from water while operating at a low altitude.NTSB WPR24LA113Accident · Minor injuriesClass 4 · LimitedFinal reportKitfox S7 Super Sport · Asotin, WAPilot’s failure to maintain clearance from powerlines during low altitude flying.NTSB WPR22FA312Accident · 2 fatalClass 3 · FieldFinal reportJackson Dennis RV-8 · Scio, ORThe pilot’s decision to perform a low-altitude aerobatic maneuver and his improper execution of the maneuver, which resulted in impact with terrain.NTSB CEN22LA356Accident · Serious injuriesClass 4 · LimitedFinal reportArbc Inc DBA Lindstrand 150A · Indianola, IAThe pilot’s failure to maintain clearance from power lines during low-level maneuvering.NTSB CEN20CA311Accident · Minor injuriesClass 4 · Data collectionFinal reportAir Tractor AT 401 · Burlington, COThe pilot’s failure to maintain clearance from guy-wires during low-altitude agricultural operations.NTSB GAA20CA018Accident · Serious injuriesData collectionFinal reportFoxworthy Rick A Sonex · Langley, WAThe pilot's failure to maintain a proper approach path, which resulted in impact with a tree.NTSB GAA19CA303Accident · Minor injuriesData collectionFinal reportAir Tractor AT502 · Rockford, OHThe pilot's failure to maintain clearance from power lines during an agricultural application flight.NTSB GAA19CA262Accident · No injuriesData collectionFinal reportCub Crafters Carbon CUB EX · Grand Junction, COThe pilot's failure to maintain clearance from power lines during low-level maneuvering through a canyon.NTSB GAA18CA573Accident · No injuriesData collectionFinal reportHiller UH 12E · Frankfort, KSThe ground crewmember's improper grabbing of the hovering helicopter's skid during an external load hook-up, which resulted in the helicopter descending and the main rotors striking ground equipment.NTSB WPR18FA261Accident · 2 fatalClass 3 · FieldFinal reportGruber Beelzabub · Rochester, WAThe pilot’s failure to maintain clearance from a tree while maneuvering at a low altitude.NTSB CEN15FA154Accident · 1 fatalField investigationFinal reportRose Thunder Mustang · Helotes, TXThe pilot’s failure to maintain terrain clearance from terrain after initiating an aerobatic maneuver at a low altitude.NTSB CEN13LA368Accident · 2 fatalLimited investigationFinal reportNanchang China CJ-6 · Wolcott, COThe pilots decision to perform an aerobatic maneuver at a low altitude from which he was unable to recover.NTSB ANC12CA029Accident · No injuriesData collectionFinal reportCessna 180 · Palmer, AKThe pilot’s failure to maintain adequate clearance from terrain during low-level maneuvering.NTSB WPR10CA466Accident · Minor injuriesData collectionFinal reportHiller UH-12E · Mecca, CAThe pilot's failure to maintain clearance from an obstacle while maneuvering.NTSB CEN10CA454Accident · No injuriesData collectionFinal reportPiper PA-36-285 · Petersburg, TXThe pilot's failure to maintain clearance from a signpost during an aerial application flight.NTSB CEN10CA395Accident · No injuriesData collectionFinal reportBell OH-58A · Roswell, NMThe pilot's failure to maintain clearance from transmission wires.NTSB ERA10LA266Accident · 2 fatalLimited investigationFinal reportAerostar S A YAK-52 · Jensen Beach, FLThe pilot's decision to perform an aerobatic maneuver at a low altitude, which resulted in insufficient clearance from the water to conduct a recovery. Contributing to the accident was the airplane’s extended landing gear, which resulted in a degradation of…NTSB ERA09CA432Accident · Minor injuriesData collectionFinal reportBingham Chuck Rotorway 1 · Atlanta, GAThe pilot's failure to maintain control of the helicopter while hovering in gusting wind conditions.NTSB WPR09LA325Accident · 2 fatalLimited investigationFinal reportAero Vodochody L-29 · Tehachapi, CAThe pilot’s failure to maintain clearance from terrain while performing a low altitude maneuver.NTSB WPR09LA269Accident · 2 fatalLimited investigationFinal reportStorch Aviation Australia PTY SS-MK4 · Boulder, UTThe pilot's failure to maintain clearance from power lines during low altitude maneuvering.NTSB DFW08LA197Accident · 1 fatalLimited investigationFinal reportMarshall James J Cozy MK IV · Midlothian, TXThe pilot's failure to maintain clearance from the wall of the rock quarry.NTSB SEA08LA128Accident · Serious injuriesLimited investigationFinal reportMoravan Zlin 50LX · Modesto, CAThe pilot failed to maintain clearance from terrain during a low-altitude maneuver at an airshow. Contributing to the accident was the task overload in the increased frequency congestion.NTSB DFW08LA108Accident · Serious injuriesLimited investigationFinal reportWoods Challenger II · Corning, ARThe pilot's failure to maintain clearance from transmission lines. A contributing factor was the low altitude selected by the pilot.