NTSB investigations: Amateur-built UNKNOWN ENG, FL
147 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
| 1969 | 2 |
|---|---|
| 1974 | 1 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1982 | 2 |
| 1983 | 3 |
| 1984 | 4 |
| 1985 | 2 |
| 1986 | 3 |
| 1987 | 3 |
| 1988 | 3 |
| 1990 | 2 |
| 1991 | 2 |
| 1992 | 1 |
| 1993 | 3 |
| 1995 | 4 |
| 1996 | 3 |
| 1997 | 1 |
| 1998 | 5 |
| 1999 | 1 |
| 2000 | 3 |
| 2001 | 2 |
| 2002 | 4 |
| 2003 | 9 |
| 2004 | 6 |
| 2005 | 5 |
| 2007 | 6 |
| 2008 | 8 |
| 2009 | 10 |
| 2010 | 5 |
| 2011 | 1 |
| 2012 | 2 |
| 2013 | 3 |
| 2014 | 3 |
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 5 |
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\" = 'FL' 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" = 'FL' 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 ERA26LA058Accident · No injuriesClass 4 · LimitedFinal reportHuebbe Tom MAX TH · Inverness Highlands South, FLThe pilot’s failure to maintain directional control on takeoff. Contributing to the accident was the aircraft design that did not incorporate differential braking.NTSB ERA25LA368Accident · No injuriesClass 3 · LimitedPreliminary reportElmore Travis C Searey · Rotonda West, FLOn September 28, 2025, at 1126 eastern daylight time, an experimental, amateur-built Searey, N2090S, was substantially damaged when it was involved in an accident near Stump Pass, Florida. The private pilot sustained minor injuries. The airplane was operated…NTSB ERA25LA181Accident · Serious injuriesClass 4 · LimitedFinal reportSchleicher ASW-19 · Zephyrhills, FLThe pilot’s inadequate inflight planning and an encounter with atmospheric conditions where the lift was not sufficient to maintain flight, resulting in an off-airport landing and collision with a fence.NTSB ERA25LA131Accident · No injuriesClass 4 · LimitedFinal reportMallory Horton AQUA-BEE · Miami, FLThe pilot’s failure to lower the landing gear before touchdown.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 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 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 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 ERA23LA365Accident · Minor injuriesClass 3 · LimitedFinal reportSheehan Kevin A Vans RV-8 · Umatilla, FLA total loss of engine power for reasons that could not be determined.NTSB ERA23LA073Accident · No injuriesClass 3 · LimitedFinal reportChilds Michael A Rotorway Exec 162-F · Titusville, FLA failure of the No. 4 exhaust valve spring retainer, which resulted in a partial loss of engine power.NTSB ERA23LA015Accident · Minor injuriesClass 4 · LimitedFinal reportST Clair David L Tango 2 · Yulee, FLThe pilot’s improper landing flare which resulted in a hard, bounced landing that damaged the nose landing gear, resulting in an inability to maintain directional control and subsequent runway excursion.NTSB ERA22LA420Accident · Minor injuriesClass 4 · LimitedFinal reportYakovlev YAK-55M · Waldo, FLThe pilot’s inadequate preflight fuel planning and preflight inspection of the airplane, which resulted in fuel exhaustion, a total loss of engine power, and the subsequent off-airport landing.NTSB ERA22FA384Accident · 2 fatalClass 3 · FieldFinal reportMXR Technologies MX2 · Osteen, FLThe pilot’s loss of airplane control while performing aerobatic maneuvers, which resulted in the airplane entering an inverted flat spin that continued until the airplane impacted terrain.NTSB ERA22LA165Accident · Minor injuriesClass 4 · LimitedFinal reportNordquist Richard A Vans RV7 · Polk City, FLA loss of control during landing due to the loose and uneven landing surface.NTSB ERA21FA318Accident · 2 fatalClass 3 · FieldFinal reportPitts 12 · Ocklawaha, FLThe pilot’s failure to maintain airplane control while performing aerobatic maneuvers, which resulted in an inverted flat spin from which he was unable to recover.NTSB ERA21LA138Accident · Serious injuriesClass 3 · LimitedFinal reportDassault Mirage F1 B · Panama City, FLNose landing gear contact with a raised aircraft arresting system during takeoff, which damaged components of the nose wheel steering system and resulted in an uncommanded left turn and loss of directional control.NTSB ERA21LA048Accident · No injuriesClass 4 · LimitedFinal reportVans RV4 · Milton, FLThe pilot's failure to maintain directional control during a crosswind landing.NTSB ERA20LA324Accident · 1 fatalClass 3 · LimitedFinal reportVans RV 8 · Hilliard, FLA total loss of engine power due to oil starvation.NTSB ERA20CA319Accident · No injuriesClass 4 · Data collectionFinal reportRotorway Exec 162F · Kenansville, FLThe pilot’s failure to maintain control of the helicopter during takeoff.NTSB ERA19FA183Accident · 1 fatalClass 3 · FieldFinal reportVans Vans RV 4 · Green Cove Springs, FLThe failure of each pilot to maintain separation from the other airplane during intentional maneuvers within close proximity of each other.NTSB ERA19FA020Accident · 1 fatalField investigationFinal reportBowers Flybaby · Milton, FLA loss of engine power for reasons that could not be determined, and the pilot's subsequent exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall at low altitude.NTSB ERA19LA018Accident · Minor injuriesClass 3 · LimitedFinal reportJabiru 250 · Daytona Beach Shores, FLA total loss of engine power for reasons that could not be determined based on the available information.NTSB ERA18LA083Accident · 1 fatalLimited investigationFinal reportGregory Newman Sonex Trainer · Carrabelle, FLA loss of engine power for reasons that could not be determined because the airplane was not recovered. Also causal was the pilot's decision to conduct a low-altitude turn following the loss of engine power, which resulted in an exceedance of the airplane's…NTSB ERA17LA340Accident · Minor injuriesLimited investigationFinal reportWaco UPF 7 · Ocklawaha, FLA failure of both magnetos due to multiple deficiencies, which resulted in a total loss of engine power.NTSB ERA17LA263Accident · Minor injuriesLimited investigationFinal reportSikorsky S-97A · Jupiter, FLA design change in the helicopter's fly-by-wire control system that resulted in an increase in the sensitivity of the cyclic stick while transitioning from ground to flight mode, magnifying the pilot's control inputs, which resulted in unintentional over…NTSB ERA17LA077Accident · No injuriesLimited investigationFinal reportBeech 76 · Dunnellon, FLAn inadequate 100-hour maintenance inspection that failed to detect and correct loose nuts on a single-drive dual magneto, which led to the subsequent separation of the magneto from the engine during initial climb and the total loss of engine power.NTSB ERA17CA013Accident · Serious injuriesData collectionFinal reportMickler Larry J RV6 A · Bell, FLThe pilot's inadequate compensation for gusting crosswinds, which resulted in a bounced landing and nose-over.NTSB GAA16LA135Accident · No injuriesLimited investigationFinal reportPinkston Randy T RV-7 · Tavernier, FLThe pilot's misidentification of a parallel roadway for the runway and the airplane's subsequent collision with numerous objects during landing.NTSB ERA16CA102Accident · No injuriesData collectionFinal reportTucker Mitchel C H 13 · Zephyrhills, FLThe pilot's failure to maintain aircraft control while on ground standing with the engine running during high crosswind conditions which resulted in a static rollover and collision with the ground.NTSB ERA15FA139Accident · 1 fatalField investigationFinal reportAdams Donald L DA1 · Sebring, FLA partial loss of engine power for reasons that could not be determined based on the available evidence.NTSB ERA14LA309Accident · Minor injuriesLimited investigationFinal reportSimmons William E Aventura 2 · Rockledge, FLThe pilot’s failure to maintain airspeed during a forced landing following a loss of engine power, which resulted in a hard landing. Contributing to the accident was the pilot’s inadequate inspection of the engine, which resulted in a loose ground wire lug on…NTSB ERA14CA189Accident · No injuriesData collectionFinal reportMoore Thomas O Zenith Stol CH701 · Frostproof, FLThe pilot's failure to maintain directional control during a precautionary landing. Contributing to the accident was the pilot's delayed decision to divert due to deteriorating weather.NTSB ERA14LA130Accident · Serious injuriesLimited investigationFinal reportVictor M Cordero RV-9A · Apopka, FLThe failure of the propeller spline shaft, the drive disk adapter, and the propeller speed reduction unit (PSRU) input spline due to a lack of inspection and lubrication, which resulted in a total loss of propeller drive and a subsequent forced landing.…NTSB ERA14LA034Accident · Minor injuriesLimited investigationFinal reportTeal Harry H Sonerai II Stretch · De Leon Springs, FLA total loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine revealed no evidence of preexisting mechanical anomalies or failures that would have precluded normal operation.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 ERA13FA219Accident · 1 fatalField investigationFinal reportDaniels Dominator · Valkaria, FLThe pilot’s failure to maintain adequate power and airspeed, which resulted in a loss of control, abrupt descent, and impact with terrain. Contributing to the accident was the pilot’s failure to obtain adequate experience in the gyroplane before making the…NTSB ERA12LA586Accident · No injuriesLimited investigationFinal reportStewart Mw/Stewart JD Sonerai 2L · Titusville, FLThe pilot's failure to attain the proper landing approach speed and touchdown point, which resulted in a runway excursion after touchdown and collision with a ditch.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 ERA11LA200Accident · No injuriesLimited investigationFinal reportPiper PA-18A 150 · Hollywood, FLA total loss of engine power for undetermined reasons.NTSB ERA11CA029Accident · No injuriesData collectionFinal reportSqueglia R/Wheeler W Hummel Bird · Hollywood, FLThe pilot's inadequate flare, which resulted in a hard landing.NTSB ERA10CA352Accident · No injuriesData collectionFinal reportVans RV8 · Port Orange, FLThe pilot's failure to maintain directional control during the landing rollout.NTSB ERA10LA328Accident · No injuriesLimited investigationFinal reportParks J L/Dreffin D Seawind 3000 · Sanibel Island, FLAn overstress failure of the elevator. Contributing to the accident was the owner/builder's modification of the experimental airplane beyond the recommendations of the kit manufacturer.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 ERA10LA229Accident · No injuriesLimited investigationFinal reportDalin Ronald K T-51 Mustang · Lakeland, FLThe builder’s use of inadequate material for the exhaust manifold adapters resulting in heat damage and chafing of the crankshaft synchronizer and timing wires that rendered an inoperative ignition system and loss of engine power.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 ERA10LA050Accident · Minor injuriesLimited investigationFinal reportGrumman Aircraft ENG G-111 · Ft Pierce, FLA total loss of left engine power and subsequent failure of the airplane to maintain airspeed and altitude on the remaining engine for undetermined reasons.NTSB ERA09LA477Accident · Serious injuriesLimited investigationFinal reportVollenweider R/Hurst R F Vans RV-9A · Marianna, FLFailure of the propeller speed reduction gearbox for undetermined reasons. Contributing to the accident was the pilot’s decision to disregard the manufacturer's mandate to replace the gearbox, the manufacturer's failure to provide owners with technical…NTSB ERA09CA361Accident · No injuriesData collectionFinal reportHummelbird Hummelbird · Sunrise, FLA partial loss of engine power during cruise flight for an undetermined reason.NTSB ERA09FA283Accident · 2 fatalField investigationFinal reportBeech K35 · Lantana, FLA total loss of engine power due to disengagement of the idler gear support pin as a result of improper maintenance.NTSB ERA09CA245Accident · Minor injuriesData collectionFinal reportPiper PA-18-150 · Tampa, FLThe pilot's failure to confirm that the landing gear was retracted prior to the attempted water landing.