NTSB investigations: Amateur-built UNKNOWN ENG, ID
32 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
| 1966 | 1 |
|---|---|
| 1967 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1986 | 1 |
| 2001 | 1 |
| 2003 | 2 |
| 2004 | 1 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 2 |
| 2012 | 3 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
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\" = 'ID' 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" = 'ID' 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 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 WPR25LA280Accident · No injuriesClass 4 · LimitedFinal reportWeaver Harmon Rocket · Hayden, IDThe pilot’s loss of directional control during landing, which resulted in a runway excursion and collision with terrain.NTSB WPR23LA314Accident · Serious injuriesClass 3 · LimitedFinal reportReynolds Ronald B Team Acft Z-MAX · Rigby, IDThe loss of engine power during takeoff due to inadequately secured wires, which resulted in the wearing of the wires’ sheaths and the grounding of the airplane’s electrical system. Contributing to the accident was the pilot’s failure to maintain airplane…NTSB WPR23LA292Accident · No injuriesClass 4 · LimitedFinal reportJohn Espe Cruiser · Buhl, IDThe pilot's failure to maintain airplane control during landing with a gusting tail wind.NTSB WPR22LA328Accident · No injuriesClass 4 · LimitedFinal reportFall Martin Super CUB · Stanley, IDThe pilot’s failure to maintain airplane control during takeoff with a crosswind.NTSB WPR21LA165Accident · No injuriesClass 4 · LimitedFinal reportBryan S Happell TANGO2 · Hayden, IDThe pilot’s failure to control the pitch attitude of the gyroplane during landing, which resulted in a loss of control, runway excursion and collision with terrain.NTSB WPR15LA218Accident · No injuriesLimited investigationFinal reportDafoe Gerald W Tcow Smith CUB · Cascade, IDA gouge in the right brake master cylinder piston O-ring, which resulted in a loss of brake pressure and reduced effectiveness after landing. Contributing to the accident was the pilot’s decision to operate the airplane with an ongoing brake issue.NTSB WPR15LA001Accident · 1 fatalLimited investigationFinal reportGaston Thomas D Thunder Mustang · Council, IDThe pilot's failure to maintain control while maneuvering for landing following a loss of oil pressure. Contributing to the accident was foreign material contamination of the oil system due to improper maintenance.NTSB WPR14CA294Accident · Minor injuriesData collectionFinal reportThrush S2RHG T65 · Parma, IDThe pilot's decision to take off with a tailwind, which resulted in the airplane not attaining sufficient airspeed for takeoff.NTSB WPR14CA006Accident · Minor injuriesData collectionFinal reportSiemens Rotorway Exec 162F · Nampa, IDA flight control malfunction during cruise flight for reasons that could not be determined. No follow-up examination was conducted due to a lapse in agency funding and subsequent government shutdown.NTSB WPR12CA234Accident · No injuriesData collectionFinal reportMurphy Rebel · Hayden Lake, IDThe pilots’ failure to position the landing gear for landing on the water, which resulted in a nose-over.NTSB WPR12CA112Accident · No injuriesData collectionFinal reportRockwell International S-2R · Yellow Pine, IDThe pilot did not maintain directional control while landing on a snow-contaminated runway.NTSB WPR12FA089Accident · 1 fatalField investigationFinal reportGarza Lancair IV-TP · Boise, IDA loss or commanded reduction of engine power during the initial climb for reasons that could not be determined because of postaccident impact damage and fire destruction to engine systems and components. Also causal were the pilot's failure to maintain…NTSB WPR10LA160Accident · Serious injuriesLimited investigationFinal reportMigas RV9-A · Twin Falls, IDThe pilot's loss of directional control during landing roll for an undetermined reason.NTSB WPR10CA109Accident · No injuriesData collectionFinal reportYoung Dee C Kitfox II · St. Anthony, IDThe pilot's improper landing flare, which resulted in a hard landing.NTSB WPR09LA336Accident · Minor injuriesLimited investigationFinal reportThomas C. Piper Murphy Rebel · Idaho Falls, IDA total loss of engine power during initial climb due to fuel starvation. The underlying reason for the fuel starvation condition could not be determined.NTSB SEA08CA153Accident · No injuriesData collectionFinal reportHammond MH1 · McCall, IDThe pilot's failure to maintain directional control during the landing roll, resulting in a inadvertent ground loop. Contributing to the accident were variable winds that resulted in a landing tailwind, and rough terrain.NTSB SEA08LA114Accident · No injuriesLimited investigationFinal reportCanup Titan Tornado S · Council, IDThe failure of the tip of the wood propeller due to damage caused by a foreign object.NTSB SEA07LA173Accident · Minor injuriesLimited investigationFinal reportHalsted Flightstar Pioneer · Nampa, IDThe failure (fracture) of the crankshaft of the non-certificated two-cycle engine during cruise flight. Factors include a ditch running through the field in which the pilot executed his engine-out forced landing.NTSB SEA05LA008Accident · No injuriesLimited investigationFinal reportHiggins Acro-Sport II · Coeur d'Alene, IDThe airplane's wood propeller separated from the airplane during cruise. A factor was the ditch that the airplane impacted during the landing roll subsequent to the forced landing.NTSB SEA03CA144Accident · Minor injuriesData collectionFinal reportWSK PZL Mielec PZL-M-18 · Burley, IDThe pilot's failure to remove the elevator gust lock prior to flight. Factors include the pilot's inadequate preflight.NTSB SEA03LA202Accident · No injuriesLimited investigationFinal reportNorth American P-51D · Jerome, IDThe malfunction of the cooling system pressure relief valve and the pilot's failure to follow procedures. An engine over temperature, a coolant leak as a result of a relief valve failure, an obstructed windshield which was covered with coolant fluid, and an…NTSB SEA01LA126Accident · No injuriesLimited investigationFinal reportMaule M-5-210C · Big Creek, IDThe pilot's failure to adequately compensate for the wind conditions during the landing roll. High and gusting winds were factors.NTSB SEA86LA152Accident · No injuriesLimited investigationFinal reportRockwell S2R · Caldwell, IDShortly after departure the pilot could not get any aileron response. A landing was attempted at a nearby airport where a go around became necessary. During the go around control of the aircraft was lost and it descended to ground impact. Investigation…NTSB SEA83FA162Accident · 1 fatalField investigationFinal reportPiper PA-36 · Firth, IDAccording to witnesses, the acft was overheard returning to the strip for a second load. Reportedly, it went into a steep bank at about 70 ft AGL & turned toward the strip. As the wings leveled, sounds of high eng power ceased & the acft descend to the…NTSB SEA82DYA06Accident · Serious injuriesFinal reportRotorway Scorpion TOO · Jerome, IDThe pilot was familiarizing himself with the home built helicopter. After hovering in one general area for about 45 minutes, he decided to hover to an open area by crossing a fence. He stated that he entered translational lift at about 20 knots while hovering…NTSB SEA80DYA20Accident · No injuriesClosedWeatherly 201B · Mountain Home, IDNTSB SEA79DYA09Accident · No injuriesClosedMaule M5210C · Hailey, IDNTSB SEA77DYA27Accident · No injuriesClosedHughes 269C · Gooding, IDNTSB SEA76DYA39Accident · No injuriesClosedHughes 269A · Gooding, IDNTSB SEA67D0352Accident · No injuriesClosedCessna 140 · Blackfoot, IDNTSB SEA67D0031Accident · No injuriesClosedLuscombe 8A · Montpelier, ID