NTSB investigations: Amateur-built UNKNOWN ENG, WI
41 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
| 1974 | 2 |
|---|---|
| 1977 | 1 |
| 1982 | 1 |
| 1988 | 1 |
| 1990 | 1 |
| 1991 | 2 |
| 1993 | 1 |
| 1994 | 1 |
| 1995 | 1 |
| 1996 | 1 |
| 1999 | 2 |
| 2001 | 2 |
| 2002 | 3 |
| 2003 | 2 |
| 2004 | 1 |
| 2005 | 1 |
| 2007 | 1 |
| 2009 | 1 |
| 2010 | 1 |
| 2012 | 3 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 1 |
| 2018 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
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\" = 'WI' 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" = 'WI' 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 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 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 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 CEN23LA037Accident · Minor injuriesClass 3 · LimitedFinal reportFairchild SA227-AT · Pewaukee, WIThe flight crew’s failure to maintain adequate airspeed and their exceedance of the airplane’s critical angle of attack during the instrument approach, which resulted in an aerodynamic stall. Contributing to the accident was an undetermined anomaly in the…NTSB CEN21LA336Accident · No injuriesClass 3 · LimitedFinal reportDriver RV-7 · Oshkosh, WIThe RV-8 pilot’s failure to account for the position of the RV-7 behind him during the landing roll in a staggered landing formation, which resulted in a ground collision of the two airplanes. Contributing to the accident was the self-induced pressure created…NTSB WPR18FA200Accident · 1 fatalField investigationFinal reportDe Havilland DH112 Venom · Sheboygan, WIThe airplane's encounter with wake turbulence from the lead airplane in the formation flight, which resulted in a compressor stall and the airplane's subsequent inability to climb.NTSB CEN16LA302Accident · Serious injuriesLimited investigationFinal reportSonex Waiex · Fond du Lac, WIA partial loss of engine for reasons that could not be determined during an examination of the engine.NTSB GAA15CA279Accident · No injuriesData collectionFinal reportBrunzlick Larry R Seawind 3000 Experim · Pelican Lake, WIAbnormal runway contact which precipitated a loss of directional control and impact with water.NTSB CEN15LA351Accident · Minor injuriesLimited investigationFinal reportRoberts Bruce W Vans Aircraft RV 9A · Land O' Lakes, WIThe pilot’s failure to maintain a proper descent rate, which resulted in a hard landing.NTSB GAA15CA180Accident · No injuriesData collectionFinal reportPietenpol AIR Camper · Burlington, WIThe student pilot's failure to maintain pitch control during the landing touchdown, resulting in a hard landing.NTSB CEN15LA020Accident · No injuriesLimited investigationFinal reportKovars Gary D Zenith Zodiak 601XL · Richland Center, WIThe loss of engine power due to carburetor icing.NTSB CEN13LA502Accident · Minor injuriesLimited investigationFinal reportAnderas Tiger Moth R80 · New Franken, WIThe loss of engine power during initial climb for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB CEN12LA530Accident · Serious injuriesLimited investigationFinal reportWilliams John T-51 Mustang · Oshkosh, WIThe separation of an engine cooling hose from the radiator.NTSB CEN12CA469Accident · Serious injuriesData collectionFinal reportPurtee Kevin M Pietenpol Aircamper · Broadhead, WIThe pilot's failure to adequately remove water-contaminated fuel during the preflight inspection, which resulted in a total loss of engine power during takeoff, and his decision to initiate a turn back to the runway with insufficient airspeed, which resulted…NTSB CEN12CA409Accident · No injuriesData collectionFinal reportWilkinson Lorin L Hatz XB-II · Oshkosh, WIThe pilot's loss of directional control while landing with a crosswind.NTSB CEN10CA421Accident · No injuriesData collectionFinal reportNord 3202 · Oshkosh, WIThe pilot's failure to maintain directional control during the landing roll.NTSB CEN09LA486Accident · No injuriesLimited investigationFinal reportGallagher Junior ACE · Oshkosh, WIThe failure of a weld joint on the right rudder pedal leading to the loss of directional control during landing.NTSB CHI07LA091Accident · Serious injuriesLimited investigationFinal reportHaddan Sonerai IIL · Fort Atkinson, WIThe pilot's failure to maintain airspeed following a loss of engine power for undetermined reasons. A low altitude and an inadvertent stall were factors.NTSB CHI05LA237Accident · 1 fatalLimited investigationFinal reportKircher RV-8 · Menomonie, WIThe pilot's decision to perform an aerobatic roll during takeoff, the low altitude, and his failure to maintain clearance from the crops and terrain.NTSB CHI05CA032Accident · Serious injuriesData collectionFinal reportOlson Sonex · Oconomowoc, WIThe loss of engine power due to a fatigue fracture of the crankshaft. An additional cause to the accident was the pilot/builder's failure to verify the dimensions of the shrink-fit crankshaft components prior reassembling the engine. A factor to the accident…NTSB CHI04LA042Accident · No injuriesLimited investigationFinal reportBeech 99 · Mosinee, WIThe pilot's failure to maintain the proper descent rate and his inadequate flare.NTSB CHI03LA162Accident · No injuriesLimited investigationFinal reportNew Standard D-25 · West Bend, WIThe pilot's excessive braking during landing roll. Contributing factors to this accident were the pilot's lack of experience in the accident airplane.NTSB CHI03LA012Accident · No injuriesLimited investigationFinal reportMork Kitfox III · Evansville, WIThe loss of power for undetermined reasons. A contributing factor is the unsuitable terrain.NTSB CHI02CA267Accident · No injuriesData collectionFinal reportTomash Avid Flyer · Camp Lake, WIThe total failure of the engine ignition system, and the unsuitable terrain encountered during the forced landing. The low altitude was a contributing factor.NTSB CHI02CA203Accident · Minor injuriesData collectionFinal reportBilgri Sonerai II Lts · Juneau, WIThe pilot's failure to maintain sufficient airspeed while maneuvering to return to the airport. A reduction in handling quality and the distraction due to the open canopy were contributing factors.NTSB CHI01LA313Accident · Serious injuriesLimited investigationFinal reportGelasi Aircamper · Bloomfield, WIAircraft control not possible due to the inadvertent control interference by the front seat passenger. Factors to the accident were the restricted control stick movement and the encountered stall.NTSB CHI01LA171Accident · No injuriesLimited investigationFinal reportLarson Murphy Rebel · Stratford, WIThe pilot's failure to abort the takeoff from the farm field. Factors were the tall grass, the rising terrain, the fence, and the inadequate planning/decision by the pilot.NTSB CHI99FA263Accident · No injuriesField investigationFinal reportUnderwood Brokaw Bullet · Oshkosh, WIthe pilot failed to maintain directional control of the airplane.NTSB CHI99LA099Accident · No injuriesLimited investigationFinal reportCalkins Kitfox 5 · Waunakee, WIthe fracture of the trim actuator.NTSB CHI96LA225Accident · Serious injuriesLimited investigationFinal reportSisk BD-5 · Lake Geneva, WIfailure of the pilot to abort the takeoff, while there was sufficient runway remaining. The high temperature and calm wind were related factors.NTSB CHI95LA141Accident · Minor injuriesLimited investigationFinal reportSorrel SNS-4 · Menomonee Falls, WIthe pilot's failure to maintain clearance with transmission wires. A factor in the accident was the transmission wires.NTSB CHI94IA095Incident · Minor injuriesIncident investigationFinal reportBritish Aerospace ATP · Mosinee, WIthe inadequate design of the PBSI electrical switch(es), and the operator's failure to expeditiously implement corrective Service Bulletins.NTSB CHI93LA295Accident · Minor injuriesLimited investigationFinal reportGardner SEA RAY · Oshkosh, WIThe pilot in command's not maintaining proper climb rate. A factor was the abrupt control interference by the passenger.NTSB CHI91DEP10Accident · No injuriesFinal reportAllan R. Goldman Dragonfly · Kenosha, WIInadequate aircraft design and insufficient information regarding wing versus canard angle for an amateur built aircraft.NTSB CHI91DEP06Accident · No injuriesFinal reportAvid Flyer Avid Flyer · Endeavor, WIThe pilot in command's inability to effectively eliminate carburetor ice to avoid an emergency landing.NTSB CHI90LA274Accident · Minor injuriesLimited investigationFinal reportBurkhart Grob 109A · Waukesha, WIThe pilot's failure to maintain adequate clearance and visual lookout for the moving tractor.NTSB CHI88FA178Accident · No injuriesField investigationFinal reportSonerai IIL · Oshkosh, WINTSB CHI82DA201Accident · No injuriesFinal reportCessna 140 · Stevens Point, WIDuring arrival, the pilot entered traffic for runway 21. The wind was from 180 degrees at 15 gusting to 35 KTS. The pilot stated that while on final approach, he slipped the plane to the right to land on the grass, but went beyond the smooth grass. After…NTSB CHI77FA062Accident · 1 fatalClosedBellanca 7ACA · Oshkosh, WINTSB CHI75FEP12Accident · Minor injuriesClosedWalts Wings S1 · Hartford, WINTSB CHI74DEP47Accident · No injuriesClosedSteffens C-II · Columbus, WI