NTSB investigations: Amateur-built UNKNOWN ENG, 2026
26 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 | 26 |
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\") = 2026
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") = 2026
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 ERA27LA008Accident · Minor injuriesClass 4 · LimitedInvestigation openZielke Ronald W Zenith 750 · Marysville, OHNTSB ERA27LA009Accident · Serious injuriesLimited investigationInvestigation openSchleicher ASK-21 · Elmira, NYNTSB WPR27FA012Accident · 2 fatalClass 3 · FieldInvestigation openGugger David RV-7A · Petaluma, CANTSB ERA26LA353Accident · No injuriesClass 4 · LimitedInvestigation openRoberts GS-2 Sportsman · Kerrtown, PANTSB WPR26LA331Accident · Serious injuriesClass 4 · LimitedInvestigation openFilip Richard/Fakowee Avia Indus Thrp T211 SP E · Benson, AZNTSB ERA26LA311Accident · No injuriesClass 4 · LimitedFinal reportHPH Glasflugel 304CZ · Xenia, OHThe glider’s encounter with atmospheric conditions where lift was not sufficient to maintain flight.NTSB ERA26LA303Accident · Serious injuriesClass 3 · LimitedPreliminary reportMcfarland Larry C Zenith 601 HDS · Ripley Landing, WVOn August 15, 2026, about 1300 eastern daylight time, an experimental, amateur-built Zenith 601 HDS airplane, N601EZ, was substantially damaged when it was involved in an accident near Ripley Landing, West Virginia. The private pilot was seriously injured.…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 CEN26LA293Accident · No injuriesClass 3 · LimitedInvestigation openGildea William D Jabiru Calypso · Lake Isabella, MINTSB WPR26LA293Accident · No injuriesClass 4 · LimitedInvestigation openP Z L -Warszawa-Cnpsl PZL-104 Wilga 35A · Ukiah, CANTSB WPR26LA265Accident · No injuriesClass 4 · LimitedFinal reportVans RV-7A · Covington, WAThe pilot’s improper pitch control during landing, which resulted in a bounced landing, nose landing gear collapse, and nose over.NTSB WPR26LA225Accident · Serious injuriesClass 3 · LimitedPreliminary reportUltramagic N-300 · Pahrump, NVOn June 18, 2026, at 0645 mountain daylight time, an Ultramagic SA N-300 balloon, N330LV, was substantially damaged when it was involved in an accident near Pahrump, Nevada. The pilot and 2 passengers were seriously injured; 7 passengers sustained minor…NTSB ANC26LA049Accident · Minor injuriesClass 4 · LimitedInvestigation openWilliam F Schoen RV-7 · Alpine, CONTSB ERA26LA231Accident · Serious injuriesClass 3 · LimitedPreliminary reportOlson/Williams Sonex · Jaffrey, NHOn June 5, 2026, at 1100 eastern daylight time, an experimental amateur-built Sonex airplane, N28YD, was substantially damaged when it was involved in an accident near Jaffrey, New Hampshire. The private pilot was seriously injured. The flight was conducted…NTSB ANC26LA045Accident · No injuriesClass 4 · LimitedInvestigation openCessna 170B · Bethel, AKNTSB 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 ERA26FA214Accident · 1 fatalClass 3 · FieldPreliminary reportPiper PA-25-235 · Saratoga Springs, NYOn May 26, 2026, about 1347 eastern daylight time, a Piper PA-25-235 airplane, N8656L, was substantially damaged when it was involved in an accident near Saratoga Springs, New York. The pilot was fatally injured. The airplane was operated as a Title 14 Code…NTSB CEN26LA191Accident · Minor injuriesClass 3 · LimitedPreliminary reportVertical Hummingbird · Lee's Summit, MOOn May 16, 2026, about 0950 central daylight time, a Vertical Aviation Technologies 300L Hummingbird helicopter, N284ST, was substantially damaged when it was involved in an accident near Lee’s Summit, Missouri. One passenger sustained minor injuries. The…NTSB DCA26LA196Accident · No injuriesClass 4 · LimitedInvestigation openSkydweller S L Solar Impulse SI2 · Gulf of America (Gulf of Mexico)NTSB WPR26LA134Accident · No injuriesClass 4 · LimitedFinal reportZlin Aviation Sro Savage CUB-S · Young, AZThe pilot’s failure to maintain adequate clearance from trees during landing.NTSB DCA26LA159Accident · No injuriesClass 4 · LimitedFinal reportPyka Pelican Cargo · Summit Point, WVThe inaccurate obstacle height entered into mission planning that resulted in the aircraft wing’s impact with a tree during descent, resulting resulted in a loss of control.NTSB WPR26LA140Accident · No injuriesClass 3 · LimitedPreliminary reportLancair Legacy · Hillsboro, OROn March 16, 2026, about 1257 Pacific daylight time, a Lancair Legacy, N212LG, sustained substantial damage when it was involved in an accident near Hillsboro, Oregon. The private pilot was not injured. The airplane was operated as a Title 14 Code of Federal…NTSB WPR26LA115Accident · No injuriesClass 4 · LimitedFinal reportMightyfly MF-100 · Atwater, CAA control system anomaly, which resulted in the overload and failure of one of the propulsion motor systems during the transition from hover to forward flight.NTSB ERA26LA133Accident · Minor injuriesClass 4 · LimitedFinal reportMorris Bradley D Zenith Stol CH-701 · Hendersonville, NCThe pilot’s failure to maintain directional control during takeoff, which resulted in a runway excursion and impact with trees.NTSB WPR26FA101Accident · 1 fatalClass 3 · FieldPreliminary reportSonex Onex · Caldwell, IDOn February 6, 2026, about 0945 mountain standard time, a Sonex Onex airplane, N362DZ, was destroyed when it was involved in an accident near Caldwell, Idaho. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…NTSB ERA26LA094Accident · Minor injuriesClass 4 · LimitedFinal reportSled Thomas Helicycle · Mobile, ALThe pilot’s failure to maintain yaw control during a crosswind approach, which resulted in a loss of tail rotor effectiveness, an uncommanded spin, hard landing, and subsequent rollover.