NTSB investigations: Amateur-built UNKNOWN ENG, 2017
43 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
| 1964 | 11 |
|---|---|
| 1965 | 12 |
| 1966 | 20 |
| 1967 | 16 |
| 1968 | 7 |
| 1969 | 11 |
| 1970 | 14 |
| 1971 | 16 |
| 1972 | 10 |
| 1973 | 12 |
| 1974 | 17 |
| 1975 | 13 |
| 1976 | 20 |
| 1977 | 19 |
| 1978 | 25 |
| 1979 | 18 |
| 1980 | 20 |
| 1981 | 19 |
| 1982 | 29 |
| 1983 | 21 |
| 1984 | 26 |
| 1985 | 22 |
| 1986 | 27 |
| 1987 | 31 |
| 1988 | 29 |
| 1989 | 15 |
| 1990 | 28 |
| 1991 | 20 |
| 1992 | 22 |
| 1993 | 27 |
| 1994 | 26 |
| 1995 | 31 |
| 1996 | 30 |
| 1997 | 22 |
| 1998 | 30 |
| 1999 | 34 |
| 2000 | 49 |
| 2001 | 45 |
| 2002 | 64 |
| 2003 | 67 |
| 2004 | 58 |
| 2005 | 70 |
| 2006 | 59 |
| 2007 | 74 |
| 2008 | 63 |
| 2009 | 62 |
| 2010 | 62 |
| 2011 | 44 |
| 2012 | 58 |
| 2013 | 43 |
| 2014 | 46 |
| 2015 | 40 |
| 2016 | 39 |
| 2017 | 43 |
| 2018 | 34 |
| 2019 | 40 |
| 2020 | 28 |
| 2021 | 36 |
| 2022 | 41 |
| 2023 | 41 |
| 2024 | 34 |
| 2025 | 32 |
| 2026 | 25 |
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 year(c.\"eventDate\") = 2017
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 year(c."eventDate") = 2017
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 GAA18CA084Accident · No injuriesData collectionFinal reportCorbeil Shawn Corbeil Shawn SER VI · Rogersburg, ORThe pilot’s improper landing flare and his subsequent failure to see and avoid a tree during a go-around.NTSB GAA18CA083Accident · No injuriesData collectionFinal reportMichael Adamczyk Zenith CH750 · Franklin, PAThe pilot’s excessive application of aft stick during takeoff, which resulted in an aerodynamic stall. Contributing to this accident was the pilot’s inexperience in the airplane.NTSB ERA18CA035Accident · No injuriesData collectionFinal reportDriggers Quillan E Titan Tornado · Mechanicsville, VAThe pilot’s inadequate preflight inspection and failure to detect water contamination in the fuel system, which resulted in a partial loss of engine power on takeoff.NTSB WPR18LA030Accident · No injuriesLimited investigationFinal reportVanderark RV-10 · Sun Lakes, AZThe fatigue fractures of the upper and lower alternator attachment bolts, which decreased the common drive belt tension and resulted in the subsequent in-flight separation of an alternator drive belt, the overheating of the engine, and the subsequent total…NTSB ANC18LA008Accident · No injuriesLimited investigationFinal reportCloud Jeffrey Ferrell Long EZ · Eufaula, ALThe in-flight separation of a portion of the propeller, which subsequently penetrated the right rudder, as a result of the failure of the bond line between two of the propeller’s wood layers. Contributing to the failure of the propeller was the manufacturer’s…NTSB GAA18CA033Accident · No injuriesData collectionFinal reportEvolution Revo · Berlin, NHThe pilot’s failure to center the ground steering before landing, which resulted in a loss of directional control.NTSB GAA18CA011Accident · No injuriesData collectionFinal reportDehavilland DHC 1 · Cedartown, GAThe pilot’s failure to maintain directional control during the landing roll.NTSB WPR18LA006Accident · Serious injuriesClass 3 · LimitedFinal reportNanchang China CJ 6 · Buckeye, AZThe failure of the fuel pump’s diaphragm which resulted in fuel system contamination from air and or oil and caused the engine to lose power.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 WPR17LA214Accident · No injuriesLimited investigationFinal reportSC Aerostar YAK 52W · El Cajon, CAThe pilot's failure to maintain directional control during taxi after a reduction in braking performance and steering capabilities due to his failure to reopen the air supply valve after the nonstandard engine start.NTSB CEN17LA365Accident · No injuriesLimited investigationFinal reportGaddis Michael Exec 162 F · Plymouth, INA failure of the drive belt for reasons that could not be determined based on the available information.NTSB GAA17CA512Accident · No injuriesData collectionFinal reportAviat A 1 · Cody, WYThe pilot’s failure to maintain directional control during the landing roll.NTSB ERA17FA274Accident · 2 fatalField investigationFinal reportBell 407 · Charlottesville, VAThe pilot's loss of helicopter control after entry into vortex ring state, leading to a high rate of descent to the ground with a right spin. Contributing to the accident was the pilot's lack of recent and recurrent training in vortex ring state recognition…NTSB ERA17FA265Accident · 1 fatalField investigationFinal reportNorth Wing Freedom · Green Township, NJThe pilot's improper preflight setup of the aircraft's foldable wing, during which he incorrectly attached a nylon strap loop pull handle, instead of the steel cable shackle at the end of the strap, to its mounting hook. The nylon strap failed in flight,…NTSB CEN17LA312Accident · No injuriesLimited investigationFinal reportRalph Marine Devil DOG · Danville, ARA separation of the left tire from its wheel because of the use of an improper substance and wheel size, which resulted in a loss of directional control during landing.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 GAA17CA467Accident · Serious injuriesData collectionFinal reportJames D Riggs RV-10 · Lawrenceburg, TNThe pilot’s improper landing flare and failure to maintain yaw control during a go-around in gusting wind conditions.NTSB GAA17CA460Accident · No injuriesData collectionFinal reportCessna 305 · Eagle Lake, TXThe pilot’s loss of directional control during landing in variable wind conditions.NTSB GAA17CA480Accident · No injuriesData collectionFinal reportThomas J Hankamp VAN'S Aircraft RV4 · Poughkeepsie, NYThe pilot’s failure to maintain directional control during takeoff.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 WPR17LA153Accident · Minor injuriesClass 3 · LimitedFinal reportClark James T Vans RV8 · Spokane, WAAn inflight engine fire for reasons that could not be determined based on the available information, which melted the air filter element and obstructed the engine's air intakes, resulting in a total loss of engine power.NTSB WPR17LA141Accident · No injuriesLimited investigationFinal reportVickers Supermaine Ltd · Marana, AZThe pilot’s failure to maintain directional control of the airplane during the landing roll.NTSB CEN17LA228Accident · Serious injuriesLimited investigationFinal reportThompson Angel Hawk II · Homer, LAA total loss of engine power due to the engine’s unresolved high operating temperatures, which resulted in failure of the distributor rotor and drive shaft, and the pilot’s failure to maintain airspeed during the subsequent forced landing, which resulted in…NTSB WPR17LA121Accident · No injuriesLimited investigationFinal reportBob Frederick Titan T-51 · Goodyear, AZFailure of the propeller speed reduction gearbox input drive gear during the airplane’s initial climb for reasons that could not be determined due to extensive damage.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 ERA17TA196Accident · No injuriesFinal reportErnest T Christley Zenith Zodiac 601XL · Sanford, NCThe pilot’s selection of a threaded metal rod of insufficient strength to connect the fuel tank selector handle to the fuel valve, which resulted in his inability to switch fuel tanks and a subsequent total loss of engine power due to fuel starvation.NTSB GAA17CA299Accident · No injuriesData collectionFinal reportThomas E Hudzinski Backcountry Super CR · Talkeetna, AKThe pilot’s failure to maintain a proper airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.NTSB ANC17CA023Accident · No injuriesData collectionFinal reportWsk-Pzl Warzawa-Okecie PZL 104 Wilga 80 · Talkeetna, AKThe pilot's failure to maintain directional control during the landing roll. Contributing to the accident were the pilot's lack of training and experience in the accident make and model airplane.NTSB GAA17CA272Accident · No injuriesData collectionFinal reportJohn Murphy JSX-2 · Chesterfield, MOThe pilot’s failure to ensure that the canopy was properly secured before takeoff, which resulted in an unstable landing flare and hard landing.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 GAA17CA257Accident · Minor injuriesData collectionFinal reportNelson Sydney Vans Acft RV8A · Englewood, COThe pilot's improper landing flare and inadvertent selection of the mixture control, which resulted in a hard, bounced landing during gusting crosswind wind conditions.NTSB GAA17CA251Accident · No injuriesData collectionFinal reportBender Joseph KIT Rotoway · Wheatland, WYThe pilot's decision to operate the helicopter in gusting wind and high-density altitude conditions and his positioning of the helicopter such that it resulted in a right quartering tailwind, which resulted in a loss of helicopter control due to a loss of…NTSB WPR17LA094Accident · Minor injuriesLimited investigationFinal reportYakovlev YAK 52 · Porterville, CAA partial loss of engine power due to contaminants in the fuel system that decreased the fuel flow, the source of which could not be determined.NTSB WPR17FA091Accident · 1 fatalField investigationFinal reportNanchang CJ6A · Keene, CAThe pilot's failure to maintain airplane control following a descent into clouds.NTSB WPR17FA089Accident · 1 fatalField investigationFinal reportAppleby Nieuport 28 · Paso Robles, CAThe failure of unknown personnel to properly safety an elevator control cable turnbuckle, which disconnected in flight resulting in loss of pitch control. Contributing to the accident was the inadequate design of the experimental airplane, which did not…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 GAA17CA208Accident · No injuriesData collectionFinal reportDempsey Daniel M Zodiac CH601XLB · Louisa, VAThe pilot’s in-flight fuel mismanagement and subsequent failure to maintain adequate airspeed while attempting to land on the runway, which resulted in an aerodynamic stall and a hard landing.NTSB GAA17CA184Accident · No injuriesData collectionFinal reportCSP Leasing Cavalon · Santa Maria, CAThe student pilot’s improper landing flare and subsequent failure to maintain crosswind correction during landing in crosswind conditions.NTSB GAA17CA179Accident · No injuriesData collectionFinal reportBurkhart Grob G 109B · Mokuleia, HIThe failure of the upper rudder hinge during flight due to severe corrosion. Contributing to the accident were the pilot’s inadequate preflight inspection and the lack of an annual inspection.NTSB CEN17LA117Accident · Serious injuriesLimited investigationFinal reportJude Mike C Side Winder · Paynesville, MNThe pilot’s inadequate preflight inspection, during which he failed to ensure that there was sufficient coolant in the engine reservoir, which resulted in the engine getting too hot and the engine control module shutting down the engine.NTSB WPR17LA067Accident · Minor injuriesLimited investigationFinal reportGuarino Vans · Marysville, CAA partial loss of engine power for reasons that could not be determined due to the fragmentation of the electrical system.NTSB ERA17LA105Accident · No injuriesLimited investigationFinal reportS C Aerostar S A YAK 52 · St. Elmo, ALThe failure of the right main landing gear uplock actuator due to corrosion.NTSB CEN17LA092Accident · Minor injuriesLimited investigationFinal reportZenith CH750 Stol · Jennings, LAA failure of the right fuel tank to supply fuel to the engine for reasons that could not be determined, which resulted in a total loss of engine power due to fuel starvation.