NTSB investigations: Amateur-built UNKNOWN ENG, 1998
30 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\") = 1998
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") = 1998
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 LAX99LA060Accident · No injuriesLimited investigationFinal reportAegerter, Simon Velocity 173E-RG · San Diego, CAThe pilot's inadequate modification to the control systems, which resulted in a restricted elevator control.NTSB MIA99FA043Accident · 3 fatalField investigationFinal reportCessna 402B · Pahokee, FLThe pilot's failure to maintain adequate altitude during the approach.NTSB LAX99LA025Accident · No injuriesLimited investigationFinal reportde Havilland Tiger Moth DH 82A · Petaluma, CAFailure of the pilot in the Tiger Moth to see and avoid traffic. A contributing factor was the delayed reaction of the student pilot in the Cessna to initiate a turnoff of the taxiway once it became apparent that the other airplane did not see him.NTSB MIA99FA012Accident · Minor injuriesField investigationFinal reportAerospatiale ATR-42-300 · San Juan, PRThe pilot's failure to verify that the parking brake was applied prior to engine start, and the resultant inadvertent movement of the aircraft and collision with the ground power cart once No. 2 was started.NTSB MIA99LA015Accident · No injuriesLimited investigationFinal reportPeters Strojnik S2A · Pensacola, FLThe aircraft's uncontrolled climb after encountering a wind gust or thermal during landing flare without engine power resulting in the pilot having to force the aircraft onto the runway making a hard landing prior to the end of the runway.NTSB DCA99WA008Incident · No injuriesForeign investigationBoeing 727 · Point A Pitre, FranceNTSB NYC99LA011Accident · No injuriesLimited investigationFinal reportZeidler Sonerai II · Kenton, OHThe pilot's premature rotation and failure to obtain/maintain airspeed during the takeoff, which resulted in a stall and impact with the ground. Factors in this accident were the pilot's lack of total experience in tail-wheeled aircraft, and the nose high…NTSB NYC99LA008Accident · No injuriesLimited investigationFinal reportWSK PZL Krosno KR-03A · Hilltown, PAThe pilot's misjudgment of altitude/distance which resulted in an in-flight collision which trees.NTSB LAX98LA302Accident · No injuriesLimited investigationFinal reportBognuda Livio IV Lancair · Reno, NVThe failure of the pilot-in-command to maintain adequate visual surveillance of the taxiway in front of his aircraft to avoid the collision.NTSB LAX98LA293Accident · Serious injuriesLimited investigationFinal reportPZL-Bielsko SZD-59 · Truckee, CAThe failure of the pilot to maintain sufficient airspeed which resulted in a inadvertent stall/spin.NTSB MIA98LA230Accident · No injuriesLimited investigationFinal reportBell 47D1 · Dawson, GAThe pilot's selection of unsuitable terrain for landing resulting in debris being blown up during landing resulting in damage to the tail rotor and loss of control.NTSB SEA98LA163Accident · No injuriesLimited investigationFinal reportSix/Huber RV-6 · Roseburg, ORA total loss of engine power for undetermined reasons.NTSB FTW98FA354Accident · 1 fatalField investigationFinal reportMooney M20J · Centennial, WYThe pilot's disregard of information provided in weather briefs, and his flight into known adverse weather in mountainous terrain which resulted in an in-flight collision with a mountain. Factors were rain and low ceiling/visibility.NTSB LAX98LA253Accident · No injuriesLimited investigationFinal reportYakovlev YAK-55M · Lincoln, CAThe pilot of the other aircraft's inadequate visual lookoutNTSB LAX98FA236Accident · 3 fatalField investigationFinal reportSikorsky CH-54A · Yucca Valley, CAAn in-flight main rotor blade spar separation as a result of the pilot-in-command's decision to continue to fly the aircraft after it had failed an AD directed BIM check. Factors were the failure of the operator's chief pilot to maintain proper supervision…NTSB CHI98FAMS1Accident · 2 fatalMissing aircraftFinal reportAero Vodochody Aero. Works L-39C · Traverse City, MIUndetermined.NTSB IAD98LA074Accident · No injuriesLimited investigationFinal reportAmerican Blimp ABC-A-60 · Lock Haven, PAthe pilot's encounter with unforecasted downdrafts.NTSB IAD98LA073Accident · No injuriesLimited investigationFinal reportSaab-Scania F-35 Draken · Oceana, VAThe pilot-in-command's inadequate fuel management which led to fuel exhaustion and subsequent loss of engine power. A related factor was the pilot's unfamiliarity with the fuel system.NTSB SEA98FA109Accident · No injuriesField investigationFinal reportNolley BD-5T · Corvallis, ORThe introduction of a fuel containing an ethanol additive into fuel tanks sloshed/sealed with a compound incompatible with alcohols, resulting in debonding of the compound from the fuel tank walls, leading to partial blockage of an in-line fuel filter, and a…NTSB NYC98FA129Accident · 1 fatalField investigationFinal reportHawker Hunter T MK 8 · Manchester, NHFuel exhaustion, resulting from the pilot's reliance on an inaccurate fuel quantity indicating system. A factor in the pilot's death was his intentional delay of the ejection sequence in order to avoid people and property on the ground.NTSB ANC98LA071Accident · No injuriesLimited investigationFinal reportCessna 172 · Angoon, AKThe pilot's failure to maintain directional control during the aborted takeoff. A factor associated with the accident was rough and uneven terrain.NTSB LAX98LA192Accident · No injuriesLimited investigationFinal reportArner Challenger II S · Pleasant Valley, AZLoss of engine power due to a loose spark plug wire cap caused by a broken spark plug retainer spring.NTSB MIA98LA179Accident · No injuriesLimited investigationFinal reportRotorway Executive 162F · New Port Richey, FLThe pilot's improper use of the collective. Contributing to the accident was pilot fatigue due to lack of sleep.NTSB MIA98LA163Accident · Serious injuriesLimited investigationFinal reportNanchang CJ-6A · Pageland, SCWas the inadvertent stall of the airplane by the pilot-in-command while attempting to clear trees beneath the airplane during the descent for the forced landing. Contributing to the accident was the partial loss of engine power due to separation of the No.9…NTSB CHI98LA152Accident · No injuriesLimited investigationFinal reportRead Rotorway Executive · Valparaiso, INthe pilot not maintaining adequate clearance with the ground during hover. Factors which contributed to this accident were the pilot's execution of a hovering turn at too low of an altitude, inadequate preflight preparation, and failing to remove the…NTSB IAD98FA054Accident · 4 fatalField investigationFinal reportBeech A36 · Davis, WVThe pilot's spatial disorientation, his subsequent loss of control of the airplane, and his overload of the horizontal stabilizer during a recovery attempt. Factors include the pilot's continued flight into icing conditions, his lack of airspeed control, and…NTSB IAD98FA049Accident · 2 fatalField investigationFinal reportFairchild Hiller FH-1100 · Stevensville, MDThe pilot's abrupt, low-g maneuver, which resulted in mast bumping and separation of the main rotor system.NTSB MIA98LA143Accident · Minor injuriesLimited investigationFinal reportOrlando Heli Air TR-2000 · Lakeland, FLThe pilot's failure to obtain the proper touch down point (landed left of runway) on landing.NTSB ATL98LA062Accident · No injuriesLimited investigationFinal reportStewart 51 S-51D · Vero Beach, FLThe maintenance personnel failure to remove a plastic plug from the oil tank breather that resulted in the rupture of the engine oil tank. Factors were, a tailwind during the emergency landing, and a ditch on the departure end of the runway.NTSB FTW98LA179Accident · Minor injuriesLimited investigationFinal reportWsk Pzl Mielec PZL-M-18 · Carlisle, ARThe pilot's inadequate preflight and inflight planning/decision, which resulted in fuel exhaustion and the lost of engine power. A factor was the lack of suitable terrain for a forced landing.