NTSB investigations: Amateur-built UNKNOWN ENG
94 cases on aircraft whose registry engine model is Amateur-built UNKNOWN ENG, where the first occurrence was “Airframe/component/system failure/malfunction”. 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
| 1983 | 5 |
|---|---|
| 1984 | 4 |
| 1985 | 2 |
| 1986 | 4 |
| 1987 | 2 |
| 1988 | 3 |
| 1989 | 4 |
| 1990 | 1 |
| 1991 | 4 |
| 1992 | 1 |
| 1993 | 2 |
| 1994 | 1 |
| 1995 | 2 |
| 1996 | 6 |
| 1998 | 1 |
| 1999 | 2 |
| 2000 | 5 |
| 2001 | 2 |
| 2002 | 11 |
| 2003 | 9 |
| 2004 | 5 |
| 2005 | 2 |
| 2006 | 8 |
| 2007 | 8 |
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.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 130))
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')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130))
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 DEN08LA038Accident · No injuriesLimited investigationFinal reportRotorway Exec 162-F · New Century, KSWhile on approach the tail rotor spar failed due to metal fatigue .NTSB DFW08CA016Accident · No injuriesData collectionFinal reportWard RC 350 HP · Magnolia, TXThe in-flight fire and loss of engine power as a result of a ruptured fuel line for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB LAX07CA266Accident · No injuriesData collectionFinal reportAmerican Air Racing Thunder Mustang · Reno, NVFire resulting from vegetation contacting hot brakes following an aborted takeoff.NTSB CHI07LA273Accident · 1 fatalLimited investigationFinal reportTerpstra Exec 162F · Winamac, INThe inadequate installation of the horizontal stabilizer bracket by the pilot, the fatigue fracture seperation of vertical stabilizer bracket during cruise flight, and the aircraft control not possible by the pilot.NTSB LAX07LA210Accident · Minor injuriesLimited investigationFinal reportAviation International Rotors CH-54A · Los Olivos, CAThe company mechanic's inadequately performed maintenance and inspection, which resulted in a flight control malfunction and loss of control during takeoff.NTSB CHI07CA152Accident · No injuriesData collectionFinal reportCessna 421C · Kokomo, INThe pilot not obtaining proper alignment with the runway during the emergency landing after takeoff, which imparted an excessive side load on the landing gear. Factors contributing to the accident were the unstabilized approach and engine shutdown due to the…NTSB CHI07CA124Accident · No injuriesData collectionFinal reportWilkinson Daniel V Rotorway Exec 90 · Kalamazoo, MIThe failure of the sprag clutch which resulted in the disengagement of the drive unit and the pilot's misjudged landing during the autorotation. A factor was the low altitude at which the failure occurred.NTSB DEN07LA044Accident · Serious injuriesLimited investigationFinal reportMarino Exec 162F-1995 · Baldwin City, KSthe failure of the tail rotor drive belt for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB CHI06LA273Accident · Minor injuriesLimited investigationFinal reportDaub Pawnee Chief · McCook, NEThe failure of a welded joint at a cyclic control cable bracket located on the main rotor mast which made control of the helicopter impossible for the pilot.NTSB NYC06LA224Accident · Serious injuriesLimited investigationFinal reportGarlick OH-58A · East Bridgewate, MAThe completion center's installation of the incorrect (shorter) release cable, and the ground crewmember's improper movement under the flight path during a bin transfer.NTSB CHI06LA260Accident · No injuriesLimited investigationFinal reportEndless Skies L164 · Durand, MIThe kit builder's improper installation of the aileron bracket leading to the aileron flutter during cruise that resulted in the wing spars' failure.NTSB LAX06LA270Accident · No injuriesLimited investigationFinal reportBurkhart Grob Flugzeugbau G109 · Glendale, AZThe failure and separation of one propeller blade for undetermined reasons.NTSB SEA06LA133Accident · No injuriesLimited investigationFinal reportNanchang China CJ-6 · Brewster, WAThe failure of the engine's three planetary gears for undetermined reasons. A factor contributing to the accident was the tree orchard.NTSB CHI06LA112Accident · No injuriesLimited investigationFinal reportDassault Falcon 2000 · Stilesville, INThe separation of the left engine cowling during cruise flight for undetermined reasons.NTSB CHI06LA088Accident · No injuriesLimited investigationFinal reportIrwin Sonex 2180 · Rockford, ILThe loss of engine power due to the restricted movement of the throttle cable during cruise flight. A factor in the accident was the trees contacted during the forced landing.NTSB LAX06LA105Accident · 2 fatalLimited investigationFinal reportHooker Zodiac 601XL · Oakdale, CAthe structural failure of the wings for undetermined reasons.NTSB CHI05FA272Accident · 1 fatalField investigationFinal reportMitsubishi MU-2B-36 · West Memphis, ARThe pilot's improper in-flight decision not to land at the departure runway or other available airports during the emergency descent, and his failure to maintain clearance from a vehicle and terrain. Contributing factors were a false engine fire warning…NTSB ATL05CA053Accident · Serious injuriesData collectionFinal reportBennett Ra Oliver Zodiac CH 601 HDS · Mt. Olive, NCRupture of the engine's cooling system radiator, which allowed steam to fill the cockpit.NTSB SEA05LA133Accident · 2 fatalLimited investigationFinal reportAero Vodochody Aero. Works L-39C · Hyak, WAThe loss of aircraft control during climb to cruise due to an undetermined flight control malfunction.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 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 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 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 CHI03LA230Accident · No injuriesLimited investigationFinal reportMurch Rotec Rally 3 · Searcy, ARThe frayed rudder cable that failed during the turn to final. A factor was the ditch the airplane encountered during the forced landing.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 MIA03LA138Accident · No injuriesLimited investigationFinal reportWSK PZL Mielec M-18A · Belle Glade, FLThe inability of the pilot to maintain directional control of the airplane following a blown right main landing gear tire during the takeoff roll, resulting in the airplane rolling into soft terrain and subsequent nose over. A factor in the accident was the…NTSB FTW03LA115Accident · No injuriesLimited investigationFinal reportCessna FA150K · Houston, TXThe in-flight separation of the elevator trim tab.NTSB LAX03FA102Accident · 2 fatalField investigationFinal reportMitchell CH-801 · Nicholas, CAan in-flight structural failure due to the pilot exceeding the design limitations of the airplane. Drug impairment was a factor.NTSB LAX03LA092Accident · 1 fatalLimited investigationFinal reportEverett BD-10 · Dana Point, CAin-flight breakup of the experimental airplane for undetermined reasons.NTSB DEN03FA034Accident · 2 fatalField investigationFinal reportYakovlev YAK 52 · Midway, UTThe malfunction of the elevator control as a result of a jammed elevator control bell crank, rendering control of the airplane impossible. A contributing factor was the foreign object (nut) damage.NTSB LAX03LA011Accident · No injuriesLimited investigationFinal reportRotorway 162F · Tucson, AZthe failure of the secondary drive shaft.NTSB CHI02LA286Accident · Serious injuriesLimited investigationFinal reportBailey DSA-1 · Washington, IAThe selection of unsuitable terrain and the failure of the oil pressure gage line. Factors were, the pilot/owners failure to obtain an annual condition inspection, and the corn crop.NTSB LAX02LA283Accident · 1 fatalLimited investigationFinal reportMinkler Venture M20 · Reno, NVthe overload failure of the horizontal stabilizers and elevators due to a pilot induced oscillation at a speed at or above Vne, which exceeded the design stress limits of the structure. Also causal was the intentional alteration by an unknown person or…NTSB CHI02LA277Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Martin, MIThe pilot's inadequate aircraft preflight and his inability to abort the takeoff due to the obscured windshield. Contributing to the accident was the bent hopper latch and the pilot's failure to maintain directional control.NTSB IAD02IA076Incident · No injuriesIncident investigationFinal reportFairchild Dornier DO-328-300 · New York, NYThe partial loss of flight display information for undetermined reasons.NTSB MIA02LA139Accident · 1 fatalLimited investigationFinal reportInteravia E-3 · Santa Rosa Bch, FLThe separation of the canopy for undetermined reasons.NTSB SEA02LA130Accident · No injuriesLimited investigationFinal reportThurmond Moni · Laurel, MTUndertorqued mounting bolts which resulted in fatigue to the wooden propeller blade and subsequent in flight separation of one of the blades while in cruise flight. An improper installation of the propeller assembly and soft terrain encountered during the…NTSB FTW02LA187Accident · 1 fatalLimited investigationFinal reportLidster Wittman Tailwind W-8 · Mesquite, TXThe in-flight separation of the outboard portion of the left wing due to the failure of the wing spar resulting from the builder's improper installation of a wing that did not meet the drawing specifications.NTSB FTW02LA167Accident · No injuriesLimited investigationFinal reportAero Commander 500-S · La Porte, TXThe failure of a hydraulic line, which resulted in the loss of the brakes.NTSB LAX02LA121Accident · Serious injuriesLimited investigationFinal reportRotorway Exec 165F · Chandler, AZThe tail rotor drive system failure as a result of incorrect installation procedures by the manufacturer's personnel.NTSB ATL02LA055Accident · 1 fatalLimited investigationFinal reportKrejci S-51D · Port St. Lucie, FLThe pilots failure to maintain airspeed while maneuvering in an attempt to return to landing area (Emergency/ departure airport.) This resulted in an inadvertent stall and subsequent in-flight collision with terrain. Factor to the accident was a partial loss…NTSB LAX02LA043Accident · 1 fatalLimited investigationFinal reportRominger Zic Zac Bird · Marina, CAthe failure the right wing spar and the subsequent separation of the right wing. Contributing factors were the pilot's inadequate maintenance, and the weakened wing structure due to a preexisting fuel tank leak.NTSB LAX01FA071Accident · Minor injuriesField investigationFinal reportWorldwide Aeros 40B · Oakland, CAOne or both of the rear ballonet air relief valves remained in an open position for undetermined reasons, which caused an out-of-balance trim condition; also causal was the flight crew’s decision to the fly the airship with a known deficiency (the inoperative…NTSB SEA01LA008Accident · 1 fatalLimited investigationFinal reportWildman Adventurer · Yelm, WAA main rotor blade strike (impact) with both a pusher propeller blade and the rudder during an unknown phase of operation resulting in a loss of control and uncontrolled descent to terrain.NTSB CHI00LA215Accident · No injuriesLimited investigationFinal reportLutke Rotoway Exec 90 · Kalamazoo, MIthe loss of main rotor rpm due to the failure of the top engine mount and the subsequent loss of the main rotor drive belt tension. A factor was the confined area landing zone.NTSB DEN00LA132Accident · Minor injuriesLimited investigationFinal reportSpencer Long EZE · Farmington, NMFailure of the coolant recovery system, resulting in overheating of the engine. A factor was the soft ground on which the forced landing was made.NTSB LAX00LA245Accident · 1 fatalLimited investigationFinal reportGarlick HH-1K · Live Oak, CAThe inadequate lubrication of the tail rotor drive shaft coupling by unknown maintenance personnel that resulted in the in-flight failure and separation of the helicopter's tail boom.NTSB LAX00LA173Accident · No injuriesLimited investigationFinal reportRotorway Exec 162F · Chandler, AZThe inadequate maintenance inspection of the secondary shaft which resulted in its fatigue failure that emanated from a corroded circumferential score mark. A factor was the fence that the pilot flared to avoid, resulting in a hard landing.