NTSB investigations: Amateur-built UNKNOWN ENG, TX
155 cases on aircraft whose registry engine model is Amateur-built UNKNOWN ENG. 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
| 1965 | 1 |
|---|---|
| 1966 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 3 |
| 1975 | 2 |
| 1976 | 4 |
| 1978 | 1 |
| 1980 | 1 |
| 1981 | 5 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 3 |
| 1985 | 2 |
| 1986 | 2 |
| 1987 | 1 |
| 1988 | 3 |
| 1990 | 1 |
| 1992 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1995 | 2 |
| 1996 | 3 |
| 1997 | 2 |
| 1999 | 2 |
| 2000 | 3 |
| 2001 | 6 |
| 2002 | 8 |
| 2003 | 4 |
| 2004 | 5 |
| 2005 | 7 |
| 2006 | 1 |
| 2007 | 7 |
| 2008 | 7 |
| 2009 | 3 |
| 2010 | 5 |
| 2011 | 3 |
| 2012 | 6 |
| 2013 | 6 |
| 2014 | 4 |
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 1 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 3 |
| 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.\"eventStateOrRegion\" = 'TX' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999'))
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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999'))
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 CEN26LA294Accident · Minor injuriesClass 4 · LimitedFinal reportPipistrel Taurus Electro G2.5 · Hempstead, TXThe pilot’s failure to properly stow the motor in preparation for approach and landing that resulted in a loss of airspeed and an inadvertent aerodynamic stall and spin.NTSB CEN26LA060Accident · Serious injuriesClass 3 · LimitedPreliminary reportSonerai II · Cresson, TXOn December 12, 2025, about 1431 central standard time, a Sonerai II airplane, registration N28MD, was substantially damaged when it was involved in an accident near Cresson, Texas. The pilot was seriously injured. The airplane was operated as a Title 14 Code…NTSB CEN25LA209Accident · No injuriesClass 4 · LimitedFinal reportVans RV-14 · Sealy, TXThe pilot’s improper use of airplane’s wheel brakes during the landing roll-out.NTSB WPR25FA127Accident · 1 fatalClass 3 · FieldPreliminary reportAzalea Saberwing · Justin, TXOn April 11, 2025, about 1906 central daylight time (CDT), an experimental amateur-built Azalea Aviation LLC Saberwing, N121DF, was destroyed when it was involved in an accident near Justin, Texas. The pilot was fatally injured. The airplane was operated as a…NTSB CEN24LA348Accident · No injuriesClass 4 · LimitedFinal reportBeech A36 · Amarillo, TXThe pilot’s failure to extend the airplane’s landing gear before landing.NTSB CEN24LA214Accident · Minor injuriesClass 4 · LimitedFinal reportStinson Vultee V-77 · Slaton, TXThe pilot’s failure to maintain directional control after landing in gusting wind conditions which resulted in a runway excursion and the airplane nosing over. Contributing was the pilot’s decision to conduct the flight in very strong, gusting wind conditions.NTSB CEN24FA167Accident · 2 fatalClass 3 · FieldFinal reportVertical Aviation Technologies Hummingbird · Spring Branch, TXA total loss of engine power for undetermined reasons, which resulted in a forced landing and a subsequent impact with terrain.NTSB CEN24FA164Accident · 1 fatalClass 3 · FieldFinal reportLancair Legacy FG · Spicewood, TXThe pilot’s failure to properly configure the airplane during a go-around in gusting wind conditions, and his subsequent exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall at an altitude too low for recovery.NTSB CEN24LA110Accident · No injuriesClass 4 · LimitedFinal reportPipistrel Taurus · Waller, TXThe failure of both pilots to see and avoid one another while maneuvering, which resulted in a mid-air collision.NTSB CEN24LA037Accident · Minor injuriesClass 3 · LimitedFinal reportCharles L. Hayes Lancair IVP Turbine · McKinney, TXThe pilot’s failure to attain the proper touchdown point during landing, which resulted in a runway excursion and collision with terrain and a vehicle.NTSB CEN23LA405Accident · No injuriesClass 3 · LimitedFinal reportAlisport Silent 2 Electro · Giddings, TXThe glider’s encounter with flutter during cruise flight that resulted in structural damage to the fuselage.NTSB CEN23LA319Accident · No injuriesClass 3 · LimitedFinal reportAlisport Silent 2 Electro · Wallis, TXThe failure of the tail boom structure due to cyclic torsion overloading as of a result of flutter in the empennage. The reason for the flutter could not be determined.NTSB CEN23LA135Accident · No injuriesClass 3 · LimitedFinal reportBell Helicopter Textron APT70 · Mineral Wells, TXThe flight crew’s loss of control of the unmanned aircraft due to software limitations. Contributing to the accident was the overly restrictive low voltage threshold limits.NTSB CEN22LA071Accident · Serious injuriesClass 3 · LimitedFinal reportVans RV8 · Wichita Falls, TXThe pilot’s improper fuel management that resulted in a total loss of engine power due to fuel starvation.NTSB CEN21LA092Accident · 1 fatalClass 3 · LimitedFinal reportSonex Tailwheel · Burleson, TXA total loss of engine power due to engine seizure. Contributing to the accident was the pilot decision not to orbit the airport, as originally planned.NTSB CEN20LA440Accident · No injuriesClass 3 · LimitedFinal reportSwearingen SA227 · San Antonio, TXThe pilot’s failure to fly a stabilized approach which resulted in a hard landing and loss of control.NTSB CEN20LA259Accident · Minor injuriesClass 3 · LimitedFinal reportSopwith Type 9400 · Van Alstyne, TXAn inflight loss of aileron control due to movement of a control connector.NTSB CEN20LA134Accident · 1 fatalClass 3 · LimitedFinal reportMuse P51D · Mesquite, TXThe pilot’s inadvertent exceedance of the airplane’s critical angle of attack for undetermined reasons, which resulted in an aerodynamic stall, loss of control, and subsequent impact with terrain.NTSB CEN20CA067Accident · Minor injuriesData collectionFinal reportGlasair 1 · Greenville, TXThe pilot's failure to maintain a proper descent rate, which resulted in a hard landing, and his subsequent loss of airplane control during an attempted go-around.NTSB CEN20CA033Accident · No injuriesData collectionFinal reportPiper PA18 · Kerrville, TXThe pilot’s loss of airplane control during the landing flare, which resulted in a loss of directional control and ground-loop.NTSB CEN19LA246Accident · No injuriesClass 3 · LimitedFinal reportSwearingen SA227 · El Paso, TXFailure of the left main landing gear to fully extend due to a lack of hydraulic fluid and during emergency extension procedures, which resulted in the collapse of the landing gear during landing and the subsequent runway excursion and collision with a sign.NTSB DCA19CA170Accident · No injuriesData collectionFinal reportBoeing CV2 · Beeville, TXA higher than expected and accounted for crosswind which initiated a lateral deviation, and resulted in the aircraft reaching the limits of the geo-fence area triggering a contingency forced landing.NTSB GAA19CA200Accident · No injuriesData collectionFinal reportZenair Zenith CH 801 · Fort Worth, TXThe pilot's failure to maintain lateral control in flight and his subsequent loss of directional control during landing with a crosswind, which resulted in a runway excursion and impact with terrain.NTSB WPR18FA232Accident · 2 fatalField investigationFinal reportHughes 369 · Granger, TXThe failure of both pilots to see and avoid a power line while maneuvering at low altitude. Contributing to the accident was the flight instructor's decision to not follow the training syllabus and allow the low-level high-speed flight.NTSB GAA17CA460Accident · No injuriesData collectionFinal reportCessna 305 · Eagle Lake, TXThe pilot’s loss of directional control during landing in variable wind conditions.NTSB CEN17LA285Accident · Serious injuriesLimited investigationFinal reportHillard Charlie R Hawker FB60 · Breckenridge, TXA total loss of engine power for reasons that could not be determined because postaccident engine examination and testing did not reveal any mechanical malfunctions or anomalies that would have precluded normal operation.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 CEN17LA149Accident · Serious injuriesLimited investigationFinal reportAero Adventure Aventura UL · Garden Ridge, TXThe total loss of engine power for reasons that could not be determined based on the available evidence.NTSB CEN17LA055Accident · Serious injuriesLimited investigationFinal reportHiller OH 23B · Tynan, TXThe student pilot's delayed and improper landing flare during a practice autorotation, which resulted in the tail rotor striking terrain.NTSB GAA16CA299Accident · Minor injuriesData collectionFinal reportBareiss David A Tango 2 · Sunrise Beach Village, TXThe nosewheel fairing becoming packed with debris during landing on the soft field due to a gap between the nosewheel tire and the fairing, which resulted in a loss of control and subsequent nose-over.NTSB CEN15LA428Accident · Serious injuriesLimited investigationFinal reportSukhoi SU-26 · Slidell, TXThe pilot's attempt to recover from an aerobatic maneuver at too low of an altitude to make a safe recovery.NTSB CEN15LA350Accident · Minor injuriesLimited investigationFinal reportJal R Dennis Trixy Princess · Midland, TXThe pilot's inadequate preflight planning during which he failed to account for the high-density altitude conditions and high gross weight, which degraded the gyroplane's climb performance and resulted in a hard landing.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 CEN15LA042Accident · Minor injuriesLimited investigationFinal reportMosier Robert S Mosquito XET · Angleton, TXThe pilot’s failure to maintain adequate clearance from trees during a precautionary landing. Contributing to the accident was the pilot’s inadequate preflight inspection during which he failed to detect a loose drive belt, which resulted in an in-flight…NTSB CEN14CA380Accident · No injuriesData collectionFinal reportDantonio 404 · Wichita Falls, TXThe separation of a spark plug wire resulting in a loss of engine power during climb out and a subsequent forced landing on a field containing trees.NTSB CEN14LA372Accident · 1 fatalLimited investigationFinal reportJonker Sailplanes JS1-C · Wallis, TXThe pilot’s loss of glider control and its subsequent impact with terrain for reasons that could not be determined due to a lack of available information.NTSB CEN14LA213Accident · Serious injuriesLimited investigationFinal reportCrow Mustang II · Morton, TXThe pilot's improper landing flare after encountering a gusting crosswind and his inadequate recovery from the subsequent bounced landing.NTSB CEN14LA056Accident · 1 fatalLimited investigationFinal reportPearson Jon M Dragonfly · Anahuac, TXThe incorrect installation by the pilot, who was not a certificated mechanic or repairman, of the main rotor head bearing block, which resulted in the in-flight separation of the rotor head.NTSB CEN14LA021Accident · No injuriesLimited investigationFinal reportPohoski RV 4 · New Waverly, TXAn in-flight fire for reasons that could not be determined because the wreckage was consumed by fire.NTSB CEN14LA003Accident · Serious injuriesLimited investigationFinal reportKenneth M Franz Ultra PUP · Belleville, TXThe pilot’s failure to maintain adequate airspeed and his exceedance of the airplane's critical angle-of-attack while turning back to the airport instead of landing straight ahead following a partial loss of engine power, which resulted in an aerodynamic…NTSB CEN13LA478Accident · No injuriesLimited investigationFinal reportDouglas Brian G BA-100 · Killeen, TXThe pilot’s improper management of the fuel mixture, which resulted in an over-rich fuel mixture condition and a subsequent partial loss of engine power.NTSB CEN13LA283Accident · No injuriesLimited investigationFinal reportAir Tractor AT-302 · Winnie, TXThe improper decision by the pilot to attempt a flight with a known fuel system-related maintenance discrepancy, which resulted in a fuel imbalance and subsequent fuel starvation during an approach to an alternate airport with a rough field. Contributing to…NTSB CEN13LA186Accident · 1 fatalLimited investigationFinal reportFisher Michael E Celebrity · Terrell, TXThe pilot’s exceedance of the airplane’s design stress limits while performing aerobatic maneuvers.NTSB CEN13LA116Accident · Serious injuriesLimited investigationFinal reportSeguine Swift II · San Antonio, TXThe pilot's failure to attain a proper pitch attitude and airspeed during initial climb, which resulted in an aerodynamic stall.NTSB CEN13FA006Accident · 4 fatalField investigationFinal reportBeech A36 · Mabank, TXThe pilot's loss of airplane control while maneuvering in instrument meteorological conditions.NTSB CEN12LA566Accident · Serious injuriesLimited investigationFinal reportThorp T-18 · Gilmer, TXThe disconnected metering unit fuel line, which resulted in a loss of engine power.NTSB CEN12CA482Accident · No injuriesData collectionFinal reportNelson Miles Sky Star Kitfox · Weatherford, TXThe pilot's failure to maintain directional control during the landing flare. Contributing to the accident was the pilot’s delay in aborting the landing.NTSB CEN12LA335Accident · No injuriesLimited investigationFinal reportShort Bros Shorts SD3-60 · Houston, TXThe pilots’ improper decision to burn fuel during the taxi by operating the engines at a higher-than-normal power setting and using the wheel brakes to control taxi speed, which resulted in a wheel fire.NTSB CEN12LA260Accident · No injuriesLimited investigationFinal reportThrush S2R-H80 · Bryan, TXThe pilot's diverted attention, which resulted in a loss of control while maneuvering the airplane at a low altitude.NTSB CEN11LA671Accident · Serious injuriesLimited investigationFinal reportFisher Michael E Hyster · Lake Jackson, TXThe improper maintenance of the throttle control cable, which resulted in the engine going to idle power after takeoff.