NTSB investigations: Amateur-built UNKNOWN ENG
36 cases on aircraft whose registry engine model is Amateur-built UNKNOWN ENG, where the defining event was Aerodynamic stall/spin. 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 | 5 |
| 2010 | 1 |
| 2011 | 5 |
| 2012 | 4 |
| 2013 | 3 |
| 2014 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 4 |
| 2024 | 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 ('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\" = '241'))
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" = '241'))
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 WPR27FA012Accident · 2 fatalClass 3 · FieldInvestigation openGugger David RV-7A · Petaluma, CANTSB WPR26LA213Accident · Serious injuriesClass 4 · LimitedFinal reportMoose SR 2500 · Sonoma, CAThe pilot's failure to maintain airspeed during a go-around in shifting wind conditions, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.NTSB WPR25FA020Accident · 1 fatalClass 3 · FieldFinal reportExtra Flugzeugbau EA 300/L · Las Cruces, NMThe pilot’s entry into an aerobatic maneuver at an altitude that was insufficient to complete a successful recovery, which resulted in an accelerated stall and impact with terrain.NTSB ERA23LA010Accident · Serious injuriesClass 4 · LimitedFinal reportGreen L/Gilner D RV-4 · Rowlesburg, WVThe pilot's failure to maintain an appropriate airspeed/angle-of-attack during the landing approach, which resulted in an aerodynamic stall, and impact with terrain.NTSB ERA22LA432Accident · Minor injuriesClass 4 · LimitedFinal reportCessna 140 · Winterville, NCThe student pilot’s improper recovery from a bounced landing. A factor in the accident was the instructor’s delayed remedial action which resulted in an inability to recover the airplane from an aerodynamic stall.NTSB WPR22FA332Accident · 2 fatalClass 3 · FieldFinal reportBeech 58 · Galt, CAThe certified flight instructor's failure to maintain control of the airplane and inadequate supervision of the flight, which resulted in an aerodynamic stall/spin from which he could not recover.NTSB WPR22FA227Accident · 2 fatalClass 3 · FieldFinal reportCessna 152 · Mendon, UTThe flight instructor’s failure to recover from a developed spin, which resulted in impact with terrain. Contributing to the accident was the flight instructor’s decision to enter the maneuver below the operator’s altitude limitation.NTSB WPR21FA210Accident · 1 fatalClass 3 · FieldFinal reportMark Coby Early Bird Jenny · Stoneville, NCThe pilot’s exceedance of the airplane’s critical angle of attack during the takeoff initial climb, which resulted in an aerodynamic stall and a loss of control.NTSB ERA20FA013Accident · 1 fatalClass 3 · FieldFinal reportSportine Aviacija LAK17B · Tamaqua, PAThe pilot's exceedance of the glider's critical angle of attack while climbing in thermal lift, which resulted in an aerodynamic stall/spin.NTSB GAA18CA223Accident · No injuriesData collectionFinal reportKen Olson Scamp · Raymond, WAThe pilot's failure to maintain a proper landing flare, which resulted in an aerodynamic stall, bounced landing, and subsequent secondary stall during a go-around attempt.NTSB CEN17FA208Accident · 1 fatalField investigationFinal reportMichael S. Logan Kitfox · New Berlin, TXA total loss of engine power for reasons that could not be determined based on the available information, and the pilot's subsequent failure to maintain adequate airspeed, which resulted in the airplane exceeding its critical angle of attack and experiencing…NTSB GAA17CA273Accident · No injuriesData collectionFinal reportAdrian George W Europa Classic · Wellington, KSThe pilot’s improper landing flare and exceedance of the airplane’s critical angle of attack during landing, which resulted in an aerodynamic stall.NTSB WPR17LA032Accident · Minor injuriesLimited investigationFinal reportHoskins Lonnie F Velocity XL RG · Petaluma, CAThe pilot’s failure to maintain adequate airspeed during an aborted landing, which resulted in an exceedance of the airplane’s critical angle of attack and an inadvertent aerodynamic stall. Contributing to the accident was the pilot’s distraction while on…NTSB ERA15LA075Accident · 1 fatalLimited investigationFinal reportJohnson David Earl Renegade Spirit · Brunswick, GAThe pilot's decision to fly the airplane with known engine deficiencies and his subsequent exceedance of the airplane's critical angle of attack following a loss of engine power, which resulted in an aerodynamic stall and loss of control after takeoff.NTSB CEN14LA202Accident · 2 fatalLimited investigationFinal reportNanchang CJ6 - A · Flushing, MIThe pilot’s failure to maintain adequate airspeed during an off-airport forced landing after a loss of engine power due to carburetor icing and his exceedance of the airplane’s critical angle-of-attack, which resulted in an aerodynamic stall. Contributing to…NTSB ERA13LA320Accident · 1 fatalLimited investigationFinal reportThompson Bruce D Sonerai II · Pulaski, TNThe pilot's failure to maintain airspeed during a near-vertical climb after takeoff, which resulted in an aerodynamic stall and subsequent collision with terrain.NTSB ERA13FA309Accident · 2 fatalField investigationFinal reportNanchang China CJ-6A · Ocean City, MDThe pilot's failure to terminate the intentional aerobatic spin at an altitude adequate to prevent impacting the water. Contributing to the accident was the pilot's loss of situational awareness due to target fixation during the prolonged aerobatic maneuver.NTSB ERA13LA254Accident · Serious injuriesLimited investigationFinal reportFleming Eldridge E Sonex · Naples, FLThe pilot’s failure to maintain airspeed during a forced landing, which resulted in an aerodynamic stall. Contributing to the accident was a partial loss of the noncertificated engine’s power for reasons that could not be determined because examination of the…NTSB ERA12FA565Accident · 2 fatalField investigationFinal reportYakovlev YAK 52 · Brownsboro, ALThe pilot's loss of control while performing a low-level aerobatic maneuver, which resulted in collision with terrain.NTSB ERA12FA326Accident · 1 fatalField investigationFinal reportGutierrez Pablino Hummel Bird · DeFuniak Springs, FLThe pilot's failure to maintain airplane control due to the airplane’s exceedence of its maximum gross weight and center of gravity’s most rearward limit and his lack of familiarity with the airplane make and model, which resulted in an aerodynamic stall and…NTSB ERA12FA256Accident · 1 fatalField investigationFinal reportAnderson John H Avid Flyer MK 4 · Waxhaw, NCThe pilot's failure to maintain adequate airspeed during an attempted go-around, which resulted in a low-altitude aerodynamic stall.NTSB WPR12FA089Accident · 1 fatalField investigationFinal reportGarza Lancair IV-TP · Boise, IDA loss or commanded reduction of engine power during the initial climb for reasons that could not be determined because of postaccident impact damage and fire destruction to engine systems and components. Also causal were the pilot's failure to maintain…NTSB ERA12FA120Accident · 1 fatalField investigationFinal reportCessna 441 · Nashville, PAThe pilot's failure to maintain minimum control airspeed after a loss of power to the right engine, which resulted in an uncontrollable roll into an inadvertent stall/spin. Contributing to the accident was the failure of the airplane's right engine for…NTSB ERA12LA011Accident · 1 fatalLimited investigationFinal reportRivers William J KR-2 · Wytheville, VAThe pilot's failure to maintain control, which resulted in an aerodynamic stall/spin. Contributing to the accident was the pilot's lack of experience in the airplane make and model.NTSB CEN11CA667Accident · Minor injuriesData collectionFinal reportTompkins Tandem Rocket · Lemars, IAThe pilot's failure to maintain aircraft control while maneuvering.NTSB ERA11FA222Accident · 2 fatalField investigationFinal reportReplogle Lancair 360 · Chesapeake, VAThe pilot did not maintain airspeed following a loss of engine power, which resulted in an aerodynamic stall and spin. Contributing to the accident was the pilot's selection of the wrong fuel tank at takeoff, which resulted in fuel starvation and the total…NTSB ERA11LA200Accident · No injuriesLimited investigationFinal reportPiper PA-18A 150 · Hollywood, FLA total loss of engine power for undetermined reasons.NTSB CEN10FA097Accident · 4 fatalField investigationFinal reportMitsubishi MU-2B-60 · Elyria, OHThe pilot's failure to maintain adequate airspeed during the instrument approach, which resulted in an aerodynamic stall and impact with terrain.NTSB ERA10LA085Accident · Serious injuriesLimited investigationFinal reportTail Feather Sea Rey · Sanibel Island, FLThe pilot’s failure to add power during a low-level turn, which resulted in a loss of airspeed and a subsequent stall.NTSB CEN10LA035Accident · Serious injuriesLimited investigationFinal reportBlanik L-13 · Middlefield, OHThe student pilot's improper control inputs which resulted in the inadvertent stall of the glider.NTSB CEN09LA440Accident · 1 fatalLimited investigationFinal reportAntares MA-33 · Centerburg, OHThe pilot's failure to maintain adequate airspeed resulting in an aerodynamic stall.NTSB ERA09CA381Accident · Serious injuriesData collectionFinal reportThompson David Challenger · Waymart, PAThe pilot's failure to maintain adequate airspeed during approach to land resulting in a stall.NTSB ERA09LA233Accident · 1 fatalLimited investigationFinal reportCurtiss Wright P-40N · Mastic Beach, NYThe pilot's failure to maintain adequate airspeed while performing aerobatics at low altitude.NTSB CEN09LA034Accident · Serious injuriesLimited investigationFinal reportRans S-12XL · Breckenridge, TXThe pilot's failure to maintain adequate airspeed, resulting in an aerodynamic stall.NTSB NYC08LA322Accident · 1 fatalLimited investigationFinal reportNagel SAL 2/3 P51 · Schenectady, NYThe pilot's failure to maintain adequate airspeed during the initial climb, which led to an aerodynamic stall.NTSB LAX08FA122Accident · 3 fatalField investigationFinal reportCarlton M. Cadwell Lancair IV-P · Mesa, AZThe pilot's failure to maintain an adequate airspeed during climb out resulting in an aerodynamic stall/spin.