NTSB investigations: Amateur-built UNKNOWN ENG
2,047 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, newest first
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.\"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."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 WPR12CA304Accident · No injuriesData collectionFinal reportSchempp Hirth Nimbus II · Redmond, ORA loss of aerodynamic lift that resulted in a forced landing on unsuitable terrain.NTSB CEN12LA452Accident · Minor injuriesLimited investigationFinal reportMikoyan Gurevich MIG 21MF · Minneapolis, MNThe pilot's delayed application of wheel brakes to slow the airplane down on landing and the airplane’s failed drag chute, which resulted in a runway overrun.NTSB ANC12CA070Accident · No injuriesData collectionFinal reportDehavilland DHC-2 · Cantwell, AKThe right seat passenger’s inadvertent contact with the emergency fuel shutoff valve, which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot's failure to provide a thorough preflight briefing to the…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 CEN12CA403Accident · No injuriesData collectionFinal reportAyres S2R-G10 · Minden, NEThe pilot’s failure to maintain clearance from the wake turbulence from a previous pass.NTSB WPR12CA288Accident · Minor injuriesData collectionFinal reportDg-Flugzeugbau DG-500MB · Richland, WAThe failure of the spoilers to retract because the right wing spoiler’s lower plate became jammed, which resulted in the glider not having enough lift to make it to the runway surface.NTSB ERA12LA411Accident · 1 fatalLimited investigationFinal reportUniversal Stinson 108 · Portland, MEA fatigue failure of the No. 3 piston skirt, which resulted in a total loss of engine power and the subsequent ditching in the ocean.NTSB CEN12LA389Accident · No injuriesLimited investigationFinal reportHoyle Fighter Escort Wings · Pueblo, COAn internal failure of one of the electrical system’s two batteries combined with the inadequate electrical system design, which resulted in a total loss of engine power.NTSB CEN12LA374Accident · No injuriesLimited investigationFinal reportYakovlev Yak-52 · Loveland, COThe pilot’s inadvertent closure of the pneumatic system valve, which resulted in the nose landing gear not fully extending before landing. Contributing to the accident was the pilot's reliance on the mechanical landing gear position indicators instead of the…NTSB WPR12LA241Accident · 1 fatalLimited investigationFinal reportWestcott Prowler Jaguar · Salinas, CAThe pilot's inability to maintain airplane control during takeoff due to an incapacitating cardiac event.NTSB ERA12LA373Accident · Minor injuriesLimited investigationFinal reportFaltin John R Rotorway Exec 162F · Smoketown, PAA loss of control during a post-maintenance test flight due to improper tracking of the helicopter’s main rotor blades by the pilot/aircraft builder.NTSB WPR12LA218Accident · 1 fatalLimited investigationFinal reportAvia Stroitel AC-5M · Kingston, NVThe pilot's failure to maintain control of the glider while maneuvering in flight.NTSB DCA12FA076Accident · 1 fatalField investigationFinal reportHawker Hawker Hunter MK.58A · Point Mugu, CAthe pilot's decision to continue the flight with a known fuel imbalance condition that resulted in a loss of lateral control when the imbalance exceeded the known capabilities of the airplane. The fuel imbalance was due to incomplete refueling and an…NTSB CEN12LA335Accident · No injuriesLimited investigationFinal reportShort Bros Shorts SD3-60 · Houston, TXThe pilots’ improper decision to burn fuel during the taxi by operating the engines at a higher-than-normal power setting and using the wheel brakes to control taxi speed, which resulted in a wheel fire.NTSB WPR12LA205Accident · Serious injuriesLimited investigationFinal reportInfinity 2000 · Hurricane, UTThe pilot's decision to fly at a low altitude in a canyon, which resulted in insufficient altitude to recover from an encounter with terrain-induced turbulence.NTSB CEN12FA290Accident · 4 fatalField investigationFinal reportCessna 401 · Chanute, KSThe malfunction of the cabin heater, which resulted in an inflight fire and smoke in the airplane. Contributing to the accident was the pilot’s lack of understanding concerning the status of the airplane's heater system following and earlier overheat event…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 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 CEN12CA263Accident · No injuriesData collectionFinal reportCampbell David Legacy · Durango, COThe pilot’s improper flare and subsequent aerodynamic stall, which resulted in a hard landing.NTSB CEN12LA260Accident · No injuriesLimited investigationFinal reportThrush S2R-H80 · Bryan, TXThe pilot's diverted attention, which resulted in a loss of control while maneuvering the airplane at a low altitude.NTSB CEN12LA259Accident · No injuriesLimited investigationFinal reportMoody-Siple A · Stuttgart, ARThe pilot’s inadequate fuel monitoring, which resulted in a total loss of engine power due to fuel exhaustion.NTSB ANC12CA032Accident · No injuriesData collectionFinal reportRobinson Helicopter R22 Alpha · Palmer, AKThe pilot's selection of unsuitable terrain for landing, which resulted in a tailrotor strike.NTSB WPR12CA150Accident · No injuriesData collectionFinal reportArado-Flugzeugwerke FW190 A-5 · Casa Grande, AZThe pilot did not maintain directional control of the airplane during the landing roll.NTSB CEN12FA217Accident · 1 fatalField investigationFinal reportOliver Joseph Zodiac CH 601XL · Belmont, OHThe loss of engine power and the pilot’s diverted attention to the engine power loss, which resulted in a rapid descent and impact with terrain.NTSB ANC12CA029Accident · No injuriesData collectionFinal reportCessna 180 · Palmer, AKThe pilot’s failure to maintain adequate clearance from terrain during low-level maneuvering.NTSB ERA12LA258Accident · No injuriesLimited investigationFinal reportRotorcraft Developement OH-58C · McComb, MSA total loss of engine power due to oil starvation at the Nos. 5 and 8 engine bearings, which resulted in a catastrophic engine failure.NTSB ERA12FA256Accident · 1 fatalField investigationFinal reportAnderson John H Avid Flyer MK 4 · Waxhaw, NCThe pilot's failure to maintain adequate airspeed during an attempted go-around, which resulted in a low-altitude aerodynamic stall.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 ERA12CA156Accident · No injuriesData collectionFinal reportBeech 58 · Walterboro, SCThe pilot’s loss of directional control during the landing roll, which resulted in a runway excursion. Contributing to the accident was the sunglare.NTSB ERA12FA120Accident · 1 fatalField investigationFinal reportCessna 441 · Nashville, PAThe pilot's failure to maintain minimum control airspeed after a loss of power to the right engine, which resulted in an uncontrollable roll into an inadvertent stall/spin. Contributing to the accident was the failure of the airplane's right engine for…NTSB WPR12FA059Accident · 1 fatalField investigationFinal reportVans RV7 - A · Surprise, AZAn electrical or engine electronic problem, which resulted in a loss of engine power, followed by a low-altitude stall.NTSB ERA12CA088Accident · No injuriesData collectionFinal reportAnatra Bart T Vans RV-7A · Quinton, VAThe pilot's improper fuel management, which resulted in a total loss of engine power due to fuel starvation, and the subsequent nose-over during the forced landing.NTSB WPR12CA033Accident · No injuriesData collectionFinal reportCasler Scott CX-4 · San Carlos, AZThe pilot's inadequate directional control during takeoff.NTSB CEN12IA050Incident · No injuriesIncident investigationFinal reportNusbaum Vaquero · Hebron, ILThe pilot’s operation of the airplane with known medical conditions and his subsequent heart attack during the flight.NTSB CEN12LA014Accident · Serious injuriesLimited investigationFinal reportPeck Zodiac 601XL · Traverse City, MIA loss of engine power for undetermined reasons.NTSB ERA12LA011Accident · 1 fatalLimited investigationFinal reportRivers William J KR-2 · Wytheville, VAThe pilot's failure to maintain control, which resulted in an aerodynamic stall/spin. Contributing to the accident was the pilot's lack of experience in the airplane make and model.NTSB CEN11CA679Accident · No injuriesData collectionFinal reportWaltman Theodore J Moose · Hays, KSRudder flutter due to the design changes to the airplane's horizontal stabilizer.NTSB CEN11CA667Accident · Minor injuriesData collectionFinal reportTompkins Tandem Rocket · Lemars, IAThe pilot's failure to maintain aircraft control while maneuvering.NTSB WPR11MA454Accident · 11 fatalClass 1 · MajorFinal reportNorth American/Aero Classics P-51D · Reno, NVThe reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate…NTSB WPR11LA427Accident · No injuriesLimited investigationFinal reportStinson V77 · Tillamook, ORThe pilot’s loss of directional control while taxiing in a gusting tailwind.NTSB ERA11FA468Accident · 1 fatalField investigationFinal reportMitchell David N Lancair IV P · Hammonton, NJThe Lancair pilot's failure to see and avoid the aerobatic airplane. Contributing to the accident was the Lancair pilot's inadequate use of collision avoidance strategies while inbound to an area of known potential aerobatic activity.NTSB CEN11LA596Accident · No injuriesLimited investigationFinal reportSuminski Walter M Jabiru SP · Columbia, ILSeparation of the right main wheel during landing rollout for undetermined reasons.NTSB CEN11LA671Accident · Serious injuriesLimited investigationFinal reportFisher Michael E Hyster · Lake Jackson, TXThe improper maintenance of the throttle control cable, which resulted in the engine going to idle power after takeoff.NTSB WPR11CA399Accident · No injuriesData collectionFinal reportRichmond Jim R CCK-1865 · Dubois, WYThe pilot's failure to maintain clearance from a wire during cruise flight.NTSB CEN11LA566Accident · No injuriesLimited investigationFinal reportAir Tractor AT-400 · Nelson, NEFailure of the fuel control unit's spool cap bearing for reasons that could not be determined during extensive postaccident examination, and the pilot’s decision to shut the engine down without sufficient altitude and distance to reach the runway.NTSB WPR11LA377Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R22 Beta · Deer Park, WAThe student pilot's failure to maintain control of the helicopter and his delay in relinquishing control to the flight instructor, which resulted in the instructor’s delayed remedial actions and subsequent hard landing.NTSB CEN11LA541Accident · No injuriesLimited investigationFinal reportWeatherly 620B · Hettinger, NDInternal failure of the engine for undetermined reasons.NTSB CEN11LA527Accident · No injuriesLimited investigationFinal reportSnow Quickie 2 · Ashtabula, OHThe incorrect propeller pitch and lower-than-expected engine speed that did not allow the airplane to attain a proper climb rate during takeoff, and the subsequent hard landing that occurred when the pilot reduced power.NTSB CEN11LA499Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Fergus Falls, MNThe total loss of engine power for reasons that could not be determined because the airplane came to rest inverted in water.