NTSB investigations: Amateur-built UNKNOWN ENG, 1999
34 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
| 1964 | 11 |
|---|---|
| 1965 | 12 |
| 1966 | 20 |
| 1967 | 16 |
| 1968 | 7 |
| 1969 | 11 |
| 1970 | 14 |
| 1971 | 16 |
| 1972 | 10 |
| 1973 | 12 |
| 1974 | 17 |
| 1975 | 13 |
| 1976 | 20 |
| 1977 | 19 |
| 1978 | 25 |
| 1979 | 18 |
| 1980 | 20 |
| 1981 | 19 |
| 1982 | 29 |
| 1983 | 21 |
| 1984 | 26 |
| 1985 | 22 |
| 1986 | 27 |
| 1987 | 31 |
| 1988 | 29 |
| 1989 | 15 |
| 1990 | 28 |
| 1991 | 20 |
| 1992 | 22 |
| 1993 | 27 |
| 1994 | 26 |
| 1995 | 31 |
| 1996 | 30 |
| 1997 | 22 |
| 1998 | 30 |
| 1999 | 34 |
| 2000 | 49 |
| 2001 | 45 |
| 2002 | 64 |
| 2003 | 67 |
| 2004 | 58 |
| 2005 | 70 |
| 2006 | 59 |
| 2007 | 74 |
| 2008 | 63 |
| 2009 | 62 |
| 2010 | 62 |
| 2011 | 44 |
| 2012 | 58 |
| 2013 | 43 |
| 2014 | 46 |
| 2015 | 40 |
| 2016 | 39 |
| 2017 | 43 |
| 2018 | 34 |
| 2019 | 40 |
| 2020 | 28 |
| 2021 | 36 |
| 2022 | 41 |
| 2023 | 41 |
| 2024 | 34 |
| 2025 | 32 |
| 2026 | 25 |
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 year(c.\"eventDate\") = 1999
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 year(c."eventDate") = 1999
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 IAD00LA014Accident · Minor injuriesLimited investigationFinal reportPrudhomme Velocity RG 173 · Richmond, VAthe improper installation of the oil supply line to the propeller governor which resulted in a loss of lubrication, overtemperature, and a loss of engine power.NTSB FTW00LA045Accident · No injuriesLimited investigationFinal reportCartercopters Cartercopter · Olney, TXThe pilot's failure to maintain rotor rpm during takeoff, which resulted in a hard landing following the aborted takeoff.NTSB LAX00LA034Accident · Serious injuriesLimited investigationFinal reportHawker Siddeley Hunter T MK 7 · Mesa, AZThe fatigue failure and separation the stage 3 compressor blades due to corrosion pitting of the blade retention lug bores. A factor in the accident was the failure of the various post military surplus operators of this engine to incorporate the…NTSB IAD00LA005Accident · No injuriesLimited investigationFinal reportAnkenbruck SEA Hawk · Somerset, PAThe pilot's improper preflight which resulted in a loss of power due to contaminated fuel, and the pilot's failure to maintain aircraft control after the loss of power. A factor in the accident was fuel contamination.NTSB SEA00IA007Incident · No injuriesIncident investigationFinal reportCessna 172P · Wenatchee, WAThe failure of the pilots in both aircraft to maintain an adequate visual lookout. Haze was a factor.NTSB FTW00LA017Accident · No injuriesLimited investigationFinal reportWright Avid Flyer Mark IV · Seabrook, TXThe pilot's failure to maintain directional control during a downwind landing. Factors were his improper weather evaluation, the prevailing tailwind, and the engine vibration.NTSB LAX00LA023Accident · 1 fatalLimited investigationFinal reportLuhnau BD-5B · Boulder City, NVThe pilot's failure to secure an electrical wire terminal in the propeller pitch control circuit following a maintenance adjustment, which resulted in the propeller malfunctioning and going to a flat pitch. The flat pitch of the propeller produced a high drag…NTSB LAX00LA011Accident · No injuriesLimited investigationFinal reportWaco UPF7 · Jean, NVThe pilot of the other airplane's failure to maintain an adequate visual lookout while taxiing for departure. Factors in the accident were: the narrow nature of the taxiway and the pilot of the other airplane's subsequent inability to S-turn for better…NTSB LAX00LA015Accident · No injuriesLimited investigationFinal reportAirbus Industrie A-320-231 · Phoenix, AZThe airline's failure to fully review the obstruction clearances and revise the pushback procedures in an area of the ramp where new construction had impinged on the available ramp space. Also causal was the failure of the tug driver and the wing walkers to…NTSB FTW00LA006Accident · 1 fatalLimited investigationFinal reportWSK PZL Mielec M18 · Weldon, ARThe cause of the accident was undetermined.NTSB LAX99LA323Accident · Serious injuriesLimited investigationFinal reportAirbus Industrie A-320-231 · Beatty, NVthe failure of the injured passengers to remain seated with their seat belts fastened as directed by the captain.NTSB LAX99LA304Accident · Minor injuriesLimited investigationFinal reportGlover Teenie TWO · Chino, CAThe in-flight separation and loss of the carburetor fuel jet resulting from the pilot's improper installation of the component. Also causal was the pilot's failure to maintain an adequate airspeed margin following the loss of power, which resulted in an…NTSB NYC99LA221Accident · 1 fatalLimited investigationFinal reportValenza Volksplane VP-II · Westmore, VTThe pilot's failure to maintain adequate altitude/clearance from the trees. A related factor was the pilot's lack of familiarity with the airplane.NTSB LAX99LA298Accident · No injuriesLimited investigationFinal reportLithuanian Factory of LAK-12 · Prescott, AZThe pilot's failure to maintain an adequate clearance from ground obstructions during an off-airport landing. The pilot's inability to locate suitable thermal activity to remain aloft is a factor in the accident.NTSB IAD99WA062Accident · 2 fatalForeign investigationLearjet 35A · Adwa, EthiopiaNTSB NYC99LA215Accident · No injuriesLimited investigationFinal reportLet L-33-SOLO · Wellington, OHThe pilot's failure to attain the proper touchdown point. A factor related to the accident was a downdraft.NTSB SEA99FA146Accident · 2 fatalField investigationFinal reportRepublic RC-3 · Chimacum, WAThe inadequate visual lookout by both the pilot-in-command and second pilot, and the pilot-in-command's failure to maintain sufficient flying speed to prevent a stall condition. Contributing factors were the transmission lines, gusty wind conditions, and the…NTSB CHI99FA263Accident · No injuriesField investigationFinal reportUnderwood Brokaw Bullet · Oshkosh, WIthe pilot failed to maintain directional control of the airplane.NTSB CHI99LA200Accident · Serious injuriesLimited investigationFinal reportGillmore Benson B&M · Greencastle, INthe failure of the cyclic control rod. Factors were aircraft control not possible for the pilot.NTSB NYC99LA148Accident · No injuriesLimited investigationFinal reportAdams Rotorway EXEC-90 · Evington, VAThe pilot's selection of unsuitable terrain for a run on landing. A factor was the dirt bank.NTSB SEA99LA081Accident · 1 fatalLimited investigationFinal reportD. Wayne Smith Wayncraft 14 · Libby, MTCollision with terrain for undetermined reasons.NTSB IAD99LA047Accident · Serious injuriesLimited investigationFinal reportNanchang CJ-6A · Ocean City, MDWas the pilot leaving the magneto switch in the on position while hand rotating the propeller.NTSB SEA99LA071Accident · No injuriesLimited investigationFinal reportBen Travis Kitfox IV · Carnation, WALoss of engine power due to a cracked engine impulse line, which disabled the fuel pump. A factor was the intentional ground loop by the pilot.NTSB SEA99LA061Accident · No injuriesLimited investigationFinal reportEugene Hughes Lancair IV · Butte, MTThe pilot's improper flare.NTSB LAX99LA170Accident · No injuriesLimited investigationFinal reportWsk Pzl Warzawa-Okecie PZL-104 Wilga 80 · Reno, NVThe flight instructor's improper supervision of the pilot trainee and his failure to make timely control inputs in order to maintain aircraft control.NTSB LAX99LA167Accident · No injuriesLimited investigationFinal reportMassey Super Stallion · Shafter, CAThe pilot's decision to attempt a landing with insufficient runway remaining to stop the airplane.NTSB DEN99LA068Accident · No injuriesLimited investigationFinal reportWeatherly 201-C · Two Buttes, COThe pilot's selection of an unsuitable landing area. Factors associated with the accident were an unknown object in the landing area, a failure of a main landing gear tire, and the pilot's inadvertent ground loop/swerve.NTSB MIA99FA108Accident · 1 fatalField investigationFinal reportPushkar Hornet · Fort Lauderdale, FLthe pilot's (owner/builder) inadvertent aerodynamic stall of the airplane after a total loss of engine power. Factors were the pilot's improper maintenance action and his lack of total experience in the airplane type.NTSB NYC99LA072Accident · Minor injuriesLimited investigationFinal reportMiner Rotorway Exec 162F · Mechanicsburg, PAThe pilot's inadvertent induced dynamic rollover. A factor in the accident was the pilot's lack of helicopter experience.NTSB CHI99IA100Incident · No injuriesIncident investigationFinal reportMcDonnell Douglas DC-10 · Salina, KSThe ARTCC personnel failed to maintain radio communications with both airplanes and failed to maintain IFR separation standards. Factors relating to the incident were the FAA does not require cargo airplanes to be equipped with TCAS and neither airplane was…NTSB CHI99LA099Accident · No injuriesLimited investigationFinal reportCalkins Kitfox 5 · Waunakee, WIthe fracture of the trim actuator.NTSB NYC99IA062Incident · No injuriesIncident investigationFinal reportAirbus Industrie A-320-231 · Columbus, OHa failure of the external o-rings in the nose landing gear steering module.NTSB IAD99LA030Accident · Minor injuriesLimited investigationFinal reportWSK PZL Krosno KR-03A · Kutztown, PAwas the in-flight encounter with thermal sink over unsuitable terrain for landing.NTSB LAX99LA089Accident · Minor injuriesLimited investigationFinal reportStern Rotorway Exec 162F · Tucson, AZThe sudden development of a wind gust which resulted in the pilot losing control, and the helicopter's dynamic rollover when a skid contacted the ground.