NTSB investigations: Amateur-built UNKNOWN ENG
2,047 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, newest first
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'))
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'))
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 CEN25LA123Accident · Minor injuriesClass 4 · LimitedFinal reportCaldwell C W 162F · Mounds, OKThe student pilot’s failure to maintain control of the helicopter during a precautionary landing, which resulted in a dynamic roll over and postimpact fire.NTSB ERA25LA131Accident · No injuriesClass 4 · LimitedFinal reportMallory Horton AQUA-BEE · Miami, FLThe pilot’s failure to lower the landing gear before touchdown.NTSB WPR25LA101Accident · No injuriesClass 3 · LimitedFinal reportHughes OH-6A · Santa Teresa, NMThe flight instructor's failure to maintain helicopter control during a practice autorotation, which resulted in a hard landing and structural damage to the tail boom and subsequent failure of the tail rotor drive system.NTSB WPR25LA103Accident · No injuriesClass 4 · LimitedFinal reportAmazon.Com Services MK30 · Pendleton, ORThe unmanned aircraft system’s failure to maintain clearance from an obstacle, which resulted in a loss of control and impact with terrain.NTSB ERA25LA107AccidentClass 3 · LimitedPreliminary reportAviat Pitts S-2B · Fellsmere, FLOn January 30, 2025, at 1034 eastern standard time, an Aviat Inc Pitts S-2B, N8ZT, was substantially damaged when it was involved in an accident near Fellsmere, Florida. The private pilot was seriously injured. The airplane was operated as a Title 14 Code of…NTSB WPR25LA083Accident · No injuriesClass 4 · LimitedFinal reportCharles E Spencer CCK-1865 · Vacaville, CAThe pilot’s failure to maintain directional control during the landing roll.NTSB CEN25LA078Accident · No injuriesClass 4 · LimitedFinal reportZenith Stol CH750 · Byron, ILThe pilot inadvertently moved the ignition key to the off position and broke the key, which resulted in a loss of engine power and subsequent forced landing.NTSB WPR25LA064Accident · No injuriesClass 4 · LimitedFinal reportAmazon.Com Services MK30 · Pendleton, ORThe incorrect altitude indication by test software during landing.NTSB WPR25LA063Accident · No injuriesClass 4 · LimitedFinal reportAmazon.Com Services MK30 · Pendleton, ORAn improper altitude indication from a recent software update, which resulted in a loss of engine power in flight.NTSB ERA25FA065Accident · 1 fatalClass 3 · FieldPreliminary reportTruitt James B Vans RV-8A · Fort Blackmore, VAOn December 4, 2024, about 1451 eastern standard time, an experimental amateur-built Vans RV-8A, N627TT, was substantially damaged when it was involved in an accident near Fort Blackmore, Virginia. The commercial pilot was fatally injured. The airplane was…NTSB ERA25LA064Accident · Serious injuriesClass 3 · LimitedFinal reportAMS Flight D O O Carat A · Centralhatchee, GAMaintenance personnel’s failure to comply with the engine manufacturer’s guidance, which resulted in improper valvetrain clearances, unseating of the intake valve keepers, and a total loss of engine power.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 CEN25LA013Accident · Minor injuriesClass 3 · LimitedFinal reportRotorway Exec · Plymouth, INA loss of control due to the failed forward tail rotor belt as a result of the owner’s failure to follow the helicopter manufacturer’s tail rotor belt replacement recommendations.NTSB CEN25LA010Accident · No injuriesClass 4 · LimitedFinal reportZodiac 601 · Augusta, KSThe pilot’s failure to maintain directional control during the landing roll.NTSB WPR24FA309Accident · 1 fatalClass 3 · FieldFinal reportNanchang China CJ-6A · Lancaster, CAThe CJ-6A pilot’s failure to maintain separation and the Yak pilot’s failure to monitor the other airplane during a detachment, which resulted in a midair collision.NTSB WPR24LA317Accident · No injuriesClass 4 · LimitedFinal reportYakovlev YAK-50 · Watsonville, CAThe Yak-50 pilot’s failure to maintain clearance from another airplane while taxiing and maneuvering. Contributing to the accident was the pilot’s inattention due to a distraction inside the cockpit.NTSB CEN24LA348Accident · No injuriesClass 4 · LimitedFinal reportBeech A36 · Amarillo, TXThe pilot’s failure to extend the airplane’s landing gear before landing.NTSB WPR24LA302Accident · No injuriesClass 4 · LimitedFinal reportAmazon.Com Services MK30 · Pendleton, ORThe operator’s failure to maintain separation between two drones during dual simulated engine out recoveries, which resulted in a midair collision.NTSB ERA24FA362Accident · 1 fatalClass 3 · FieldFinal reportSchleicher Alexander ASH 26 E · Waynesville, OHA loss of control on takeoff for undetermined reasons.NTSB CEN24LA330Accident · No injuriesClass 4 · LimitedFinal reportEsqual VM1 · Oshkosh, WIThe pilot’s premature rotation during takeoff which resulted in the airplane settling back to the runway and the subsequent separation of the left wheel.NTSB ERA24LA284Accident · Serious injuriesClass 4 · LimitedFinal reportCorella Neil RV9A · Saluda, SCThe pilot’s failure to maintain an appropriate glide path during the landing approach in variable wind conditions, which resulted in collision with trees.NTSB ERA24LA298Accident · No injuriesClass 4 · LimitedFinal reportGlobe GC1B · Peachtree City, GAA right main landing gear collapse during landing.NTSB ERA24LA258Accident · Serious injuriesClass 3 · LimitedFinal reportClapp Saberwing · Valdosta, GAThe total loss of engine power due to the shearing of the woodruff key that indexed the crankshaft gear and hub assembly to the crankshaft, which resulted in the gear and hub rotating from their indexed position and caused the crankshaft-to-camshaft timing to…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 WPR24LA188Accident · Serious injuriesClass 3 · LimitedFinal reportDavid Fisher Murphy Moose · Ocean Shores, WAThe pilot’s hard, bounced landing, subsequent failure to maintain adequate airspeed, and his exceedance of the airplane’s critical angle of attack during a go-around, which resulted in an aerodynamic stall and impact with terrain.NTSB WPR24FA185Accident · 1 fatalClass 3 · FieldFinal reportRans S-12XL Airaile · Picacho Peak, AZThe pilot’s decision to conduct a low-altitude flight in mountainous terrain and his subsequent loss of airplane control after encountering mechanical turbulence, which resulted in an impact with the terrain.NTSB WPR24LA162Accident · No injuriesClass 4 · LimitedFinal reportNelson Lawrence K 601 HDS · Somerton, AZThe pilot’s inadequate fuel management which resulted in a total loss of engine power due to fuel starvation.NTSB CEN24LA198Accident · No injuriesClass 4 · LimitedFinal reportBrant T Phillips Super Cub EXP · Franktown, COThe pilot’s failure to maintain aircraft control during final approach and attempted go-around after encountering a sudden windshear.NTSB WPR24LA159Accident · No injuriesClass 3 · LimitedFinal reportNanchang China CJ-6A · Peoria, AZThe partial loss of engine power during cruise flight due to the improper installation of the master connecting rod main bushing set screws, which backed off and allowed the main bushing to shift, resulting in scoring damage on the crankshaft that led to the…NTSB CEN24LA185Accident · Serious injuriesClass 3 · LimitedFinal reportTitan T51 · Novi, MIA failure of the electrical system, resulting in a loss of fuel injection and subsequent loss of engine power.NTSB CEN24FA170Accident · 2 fatalClass 3 · FieldFinal reportZenith CH601 · Bristol, INThe pilot’s loss of control during the descent for reasons that could not be determined, which resulted in a steep descent into terrain.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 ERA24LA195Accident · No injuriesClass 4 · LimitedFinal reportReddick Jonathan L Zodiac 601XLB · Dunbar, PAA total loss of engine power as a result of an improperly fabricated fuel-air mixture cable bracket. Contributing was the pilot’s decision to fly the airplane with a known mechanical engine issue, and the presence of another airplane that was back taxiing on…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 ERA24FA160Accident · 1 fatalClass 3 · FieldFinal reportArthur B Canning Merlin Lite · Mulberry, FLThe pilot/builder’s modifications of the motorglider’s engine, which resulted in an excessively lean fuel air mixture, preignition, piston failure, and a subsequent total loss of engine power during the initial climb. Contributing to the outcome was the…NTSB ERA24LA170Accident · No injuriesClass 4 · LimitedFinal reportBeta Biz LX7 · Huntsville, ALThe failure of the nose landing gear actuator forward hydraulic fitting, which resulted in a main landing gear collapse during landing due to the loss of hydraulic fluid and pressure.NTSB WPR24LA113Accident · Minor injuriesClass 4 · LimitedFinal reportKitfox S7 Super Sport · Asotin, WAPilot’s failure to maintain clearance from powerlines during low altitude flying.NTSB ERA24LA144Accident · No injuriesClass 3 · LimitedFinal reportGlasair Sportsman 2+2 · Fort Meade, FLThe pilot’s inadequate inspection of the airplane following an inflight smoke event, which result in separation of the exhaust pipe and hot exhaust igniting the engine cowling, and a subsequent loss of engine power.NTSB CEN24LA119Accident · Serious injuriesClass 3 · LimitedFinal reportZenith Stol CH750 · Sextonville, WIA loss of engine power for reasons that could not be determined, followed by a loss of control and subsequent impact with terrain.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 ERA24LA099Accident · No injuriesClass 3 · LimitedFinal reportSwissdrones Operating SDO 50 V2 · Antioch, GAA partial loss of engine power due to a reduction of fuel flow for undetermined reasons. Contributing to the accident was the UAS manufacturer’s lack of instructions for a partial loss of engine power landing.NTSB ERA24LA083Accident · No injuriesClass 4 · LimitedFinal reportRabe Richard Exec 162F · Tuscumbia, ALThe pilot’s failure to maintain control of the helicopter, which resulted in the right skid contacting the ground and a subsequent rollover.NTSB WPR24FA053Accident · 1 fatalClass 3 · FieldFinal reportBeauchamp Norm Kitfox · Eloy, AZThe separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects that prevented the propeller from achieving adequate grip…NTSB ERA24LA043Accident · Minor injuriesClass 3 · LimitedFinal reportLancair IV · Perry, FLA rapid throttle advancement after a period of idling, which resulted in a flooded engine and total loss of engine power.NTSB ERA24LA040Accident · Minor injuriesClass 3 · LimitedFinal reportBell Andy Skyraider II · Limington, METhe failure of the fuel pump to adequately supply fuel to the engine due to significant corrosion.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 WPR24LA031Accident · No injuriesClass 4 · LimitedFinal reportAmazon.Com Services MK27-2 · Pendleton, ORThe operator’s use of an insufficiently charged battery that resulted in a total loss of engine power and subsequent impact with terrain.NTSB CEN24LA032Accident · Minor injuriesClass 4 · LimitedFinal reportTom Hodgson 29 · Kokomo, INThe pilot’s failure to maintain directional control during the landing roll.NTSB CEN24FA024Accident · 1 fatalClass 3 · FieldFinal reportLancair 320 · Manitowoc, WIThe pilot’s decision to continue the visual flight rules flight into instrument meteorological conditions and failure to maintain clearance from trees and terrain during an unapproved instrument approach. Contributing to the accident was the pilot’s…NTSB WPR24LA015Accident · No injuriesClass 4 · LimitedFinal reportBoeing A75N1(PT17) · Mesa, AZThe flight instructor’s failure to maintain directional control during the landing roll, which resulted in a ground loop.