NTSB investigations: Amateur-built UNKNOWN ENG
2,048 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 SEA04LA129Accident · No injuriesLimited investigationFinal reportLogston Starduster SA100DL · Arlington, WAThe pilot's failure to maintain clearance during taxi from another aircraft standing on the runway resulting in a collision. The aircraft standing on the runway was a factor.NTSB DEN04CA101Accident · No injuriesData collectionFinal reportWhitlock Rotorway Exec 162F · Meeker, COaircraft control not maintained by the pilot. A contributing factor was the failure of the supercharger.NTSB SEA04LA121Accident · No injuriesLimited investigationFinal reportExp Acft Assn Wi Chapter 60 Moni · Rochester, WAThe pilot's inadequate in-flight decision by failing to refuel, resulting in fuel exhaustion and the loss of power during descent. Factors contributing to the accident included the pilot's lack of experience in the aircraft and the tree.NTSB FTW04FA167Accident · 2 fatalField investigationFinal reportBell 206B · Cushing, OKthe pilot's inadequate in-flight planning/decision and his failure to maintain obstacle clearance. Contributing factors were low altitude flight, sun glare, and the static wires.NTSB SEA04CA107Accident · No injuriesData collectionFinal reportSteward Rocky 162F · Hood River, ORThe pilot's miscalculation of fuel consumption and his inadequate in-flight planning/decision, which resulted in fuel exhaustion and loss of engine power. A factor was the high vegetation.NTSB FTW04LA152Accident · No injuriesLimited investigationFinal reportWSK PZL Mielec M-18A · Dumas, ARThe loss of engine power for undetermined reasons.NTSB LAX04LA229Accident · No injuriesLimited investigationFinal reportSimmons BD-5 · Goodyear, AZThe overheating and failure of the number 4 connecting rod, which resulted in a total loss of engine power during descent.NTSB CHI04CA142Accident · No injuriesData collectionFinal reportKauffman Bede IV · Acme, MIEngine oil starvation and inadequate maintenance by the pilot.NTSB NYC04CA124Accident · Minor injuriesData collectionFinal reportFraker Mustang II · Wauseon, OHThe failure of the drive coupling between the engine and the propeller speed reducer. A factor related to the accident was the pilot's inadequate preflight inspection of the drive coupling.NTSB ANC04LA052Accident · No injuriesLimited investigationFinal reportDouglas C-54B · McGrath, AKA fuel tank explosion in the left wing auxiliary fuel tank, and subsequent fuel fire that occurred during engine start for an undetermined reason.NTSB SEA04LA079Accident · No injuriesLimited investigationFinal reportSZD Jantar 42-1 · Wamic, ORThe glider pilot's inadequate en route planning, which resulted in a forced landing in an area without suitable landing terrain. Factors include no suitable landing terrain in the area where the pilot found it necessary to execute a forced landing, and trees…NTSB IAD04LA019Accident · Minor injuriesLimited investigationFinal reportKrotje VM-1 Esqual · Cambridge, OHThe pilot's failure to maintain directional control. A factor was the inadequate brake system installed on the airplane.NTSB ATL04LA104Accident · 1 fatalLimited investigationFinal reportSukhoi SU-31 · Fort Lauderdale, FLThe pilot's failure to recover from an intentional spin during an attempted aerobatic maneuver.NTSB LAX04LA195Accident · No injuriesLimited investigationFinal reportSpirangam Velocity · Boulder City, NVthe pilot's failure to maintain directional control of the airplane during the landing rollout.NTSB FTW04LA109Accident · No injuriesLimited investigationFinal reportSpannagel RV-8A · Borger, TXA partial loss of engine power as a result of inadequate clearance between the journals and bearings.NTSB SEA04CA068Accident · No injuriesData collectionFinal reportYakovlev Yak 54 · Friday Harbor, WAThe pilot's failure to properly align with the runway. Factors include rough/uneven terrain, inadequate preflight planning and diminished forward visibility.NTSB SEA04LA063Accident · 1 fatalLimited investigationFinal reportGlasflugel STD Libelle 201B · Oso, WAThe pilot of the Glaser-Dirks (lead glider) failure to maintain clearance from the Glasflugel (trailing glider) resulting in a mid-air collision while maneuvering.NTSB SEA04CA054Accident · Minor injuriesData collectionFinal reportMenefee RAF Vari-Eze · Bremerton, WAFailure to maintain airspeed while on final approach resulting in a stall. Factors include a rough running engine for undetermined reasons and rough/uneven terrain.NTSB LAX04TA161Accident · 1 fatalFinal reportWSK PZL Mielec M-18A · Safford, AZA loss of engine power due to fuel starvation and at least one ensuing engine power surge, which caused the airplane to pitch up abruptly into a stall at an altitude too low for recovery. Contributing to the accident were the pilot's mismanagement of the fuel…NTSB MIA04LA058Accident · 1 fatalLimited investigationFinal reportOrtmayer/Parson none · Bunnell, FLThe owner/pilot mechanic's failure to comply with a manufacture notice to replace the rotor blades and hub bar assembly, resulting in a failure of the hub bar to hub bar wing attaching bolt and separation of a main rotor blade.NTSB LAX04FA150Accident · 2 fatalField investigationFinal reportErcoupe 415-C · Oakdale, CAthe in-flight separation of the main spar due to corrosion in the wing center section not detectable by inspection methods described in manufacturer's service bulletins and FAA Airworthiness Directives.NTSB NYC04LA079Accident · Serious injuriesLimited investigationFinal reportGeoffrion Rotorway Exec 162 · Medina, OHA failure of the helicopter's tail rotor drive system for undetermined reasons.NTSB LAX04LA125Accident · 2 fatalLimited investigationFinal reportKnapple/Wray Lancair IV-P · Apache Junction, AZthe pilot/builder's failure to maintain an adequate airspeed while maneuvering that resulted in an inadvertent stall/spin.NTSB LAX04LA069Accident · Serious injuriesLimited investigationFinal reportAllison KR-2 · Glendale, AZloss of engine power due to a loose carburetor jet. A contributing factor was the owner/operators failure to have a condition inspection performed on the aircraft.NTSB CHI04LA042Accident · No injuriesLimited investigationFinal reportBeech 99 · Mosinee, WIThe pilot's failure to maintain the proper descent rate and his inadequate flare.NTSB FTW04LA040Accident · 2 fatalLimited investigationFinal reportHackney Vans RV-6A · Carthage, TXThe loss of engine power due to fuel starvation and the pilot's failure to maintain airspeed which resulted in a stall,NTSB SEA04LA026Accident · 1 fatalLimited investigationFinal reportUpright RV-7A · McMinnville, ORThe pilot's failure to maintain aircraft control. Cloudy weather, continued flight into adverse weather, inadequate preflight planning and mountainous terrain were factors.NTSB LAX04LA055Accident · Minor injuriesLimited investigationFinal reportGoodyear GZ-20A · Gardena, CAThe pilot's delayed go-around during final approach to land, which resulted in an in-flight collision with a fence. A factor associated with the accident is the pilot's failure to maintain adequate altitude/clearance from obstructions.NTSB SEA04LA015Accident · No injuriesLimited investigationFinal reportSchmitt Exec 162F · Prosser, WAThe student pilot's abrupt application of excessive collective and the flight instructor's inadequate supervision of the student. Contributing factors were the ditch and low rotor RPM.NTSB MIA04LA011Accident · Serious injuriesLimited investigationFinal reportLet NP Kinovice Z37A · Oak Hill, FLThe pilots failure to maintain airspeed while maneuvering to re-enter the pattern resulting in an inadvertent stall and impact with trees and the ground during the subsequent uncontrolled descent.NTSB CHI04LA019Accident · No injuriesLimited investigationFinal reportBeech A36 · Davenport, IAA loss of engine power due to fuel starvation as a result of the improper installation of the fuel nozzle. Also causal was the engine manufacturer's improper installation instructions for the nozzle pressure port plug on the fuel manifold valve. A factor…NTSB ATL04LA019Accident · No injuriesLimited investigationFinal reportSpegele Mustang II · Calhoun, GAThe pilot's improper flare which resulted in a hard landing and subsequent landing gear collapse.NTSB CHI04LA010Accident · No injuriesLimited investigationFinal reportWright Redux Association 1903 Wright Flyer · Bolingbrook, ILThe inadequate planning/decision by the pilot to begin a flight in gusting wind conditions, the pilot's lack of experience in the airplane, and the stall encountered by the pilot during takeoff. The wind gusts were a contributing factor.NTSB NYC04LA008Accident · Minor injuriesLimited investigationFinal reportSibila VP 1 · Cincinnati, OHThe pilot's delayed decision to abort the takeoff, which resulted in a collision with trees.NTSB CHI04LA002Accident · Minor injuriesLimited investigationFinal reportGoldman Dragonfly · Peoria, ILThe loss of power for undetermined reasons and the inadvertent stall of the canard by the pilot on the turn to final during the forced landing, as well as the excessive descent rate causing the aircraft to "pancake" into the ground.NTSB ATL04LA003Accident · 1 fatalLimited investigationFinal reportWhitty Mustang II · Holly Ridge, NCThe loss of engine power for undetermined reasons, and the pilot's failure to maintain airspeed while maneuvering for a forced landing.NTSB ATL04LA001Accident · 1 fatalLimited investigationFinal reportJohnson Walter A Hornet · Saint Marys, GAThe loss of engine power due to improper maintenance and the pilot's failure to maintian airspeed during the attempted forced landing that resulted in a stall.NTSB ATL04IA010Incident · No injuriesIncident investigationFinal reportBeech 58 · Columbus, MSThe pilot's failure to follow the pre-landing checklist, and his failure to extend the landing gear which resulted in a wheels up landing.NTSB ATL03LA141Accident · No injuriesLimited investigationFinal reportBellanca CH-300 · Peachtree City, GAThe pilots failure to maintain directional control during landing roll that resulted in a ground loop and subsequent collapse of the main landing gear.NTSB CHI03LA309Accident · Minor injuriesLimited investigationFinal reportStrother KR2 · Clarinda, IAFailure of the pilot to maintain clearance from the roadway sign. The loose gravel and the sign were contributing factors.NTSB ANC03LA112Accident · No injuriesLimited investigationFinal reportDusseau Kitfox · Nikiski, AKA loss of engine power for an undetermined reason, which resulted in an overrun during the emergency landing, and subsequent nose over in swampy terrain.NTSB MIA03LA180Accident · No injuriesLimited investigationFinal reportPiper J5A · Winter Haven, FLThe inadequate preflight of the airplane by the pilot-in-command, which failed to detect water-contaminated fuel, and his failure to maintain airspeed resulting in an inadvertent stall.NTSB CHI03LA311Accident · No injuriesLimited investigationFinal reportAyres S2R-G6 · Cash, ARThe delayed aborted takeoff by the pilot. The ditch was a factor to the accident.NTSB LAX03LA267Accident · 1 fatalLimited investigationFinal reportPetz Flying Boat · Tracy, CAThe inadequate design of the engine exhaust system and inappropriate selection of propeller materials by the designer/builder, which resulted in separation of the propeller blades during takeoff/initial climb, and a subsequent in-flight collision with terrain…NTSB CHI03LA287Accident · No injuriesLimited investigationFinal reportStaudacher S-1000 · Newberry, MIThe pilot's inadequate compensation for the wind conditions, resulting in aircraft control not being maintained during the landing approach. Contributing factors to the accident were the gusting crosswind and the VASI system.NTSB ATL03LA129Accident · Serious injuriesLimited investigationFinal reportWilliam Allen MONI-1 · Timberlake, NCThe pilot's failure to maintain adequate airspeed which resulted in a stall and subsequent collision with the ground.NTSB SEA03LA163Accident · No injuriesLimited investigationFinal reportSchulze Lancair 360 · Vancouver, WALoss of engine power for undetermined reasons during the initial climb. Collision with a vehicle during landing was a factor.NTSB DEN03FA138Accident · 1 fatalField investigationFinal reportWright Hughes 1-B · Yellowstone Nat, WYThe in-flight loss of a propeller counterweight, followed by the pilot's loss of aircraft control during a forced landing attempt and subsequent inadvertent stall/spin to the ground.NTSB NYC03LA171Accident · 1 fatalLimited investigationFinal reportStewart Hummel Bird · North Baltimore, OHThe loss of engine power for undetermined reasons, and the pilot's failure to maintain airspeed, which resulted in an inadvertent stall during an emergency landing.NTSB LAX03CA257Accident · No injuriesData collectionFinal reportLancair 235 · Page, AZThe pilot's misjudged landing flare, which resulted in a hard landing and his improper recovery from a bounced landing. Inadvertent entry into a porpoise pilot-induced oscillation, and high density altitude were contributing factors.