NTSB investigations: Amateur-built UNKNOWN ENG, MO
36 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
| 1966 | 1 |
|---|---|
| 1967 | 1 |
| 1968 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1983 | 1 |
| 1987 | 1 |
| 1992 | 1 |
| 1995 | 1 |
| 2000 | 2 |
| 2002 | 1 |
| 2003 | 2 |
| 2005 | 2 |
| 2006 | 2 |
| 2009 | 2 |
| 2010 | 1 |
| 2011 | 2 |
| 2012 | 3 |
| 2014 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2023 | 1 |
| 2026 | 1 |
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.\"eventStateOrRegion\" = 'MO' AND c.\"eventCountry\" = 'USA'
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 c."eventStateOrRegion" = 'MO' AND c."eventCountry" = 'USA'
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 CEN26LA191Accident · Minor injuriesClass 3 · LimitedPreliminary reportVertical Hummingbird · Lee's Summit, MOOn May 16, 2026, about 0950 central daylight time, a Vertical Aviation Technologies 300L Hummingbird helicopter, N284ST, was substantially damaged when it was involved in an accident near Lee’s Summit, Missouri. One passenger sustained minor injuries. The…NTSB CEN23LA242Accident · Minor injuriesClass 4 · LimitedFinal reportTipton Kitfox Kitfox IV · Odessa, MOThe pilot’s failure to attain the proper touchdown speed, which resulted in a runway excursion and subsequent nose over.NTSB CEN22LA063Accident · No injuriesClass 4 · LimitedFinal reportMcdonnell Douglas Helicopter 369E · St. Louis, MOThe pilot’s failure to apply power during the recovery procedure for the practice autorotation, which resulted in a hard landing.NTSB CEN21LA053Accident · 1 fatalClass 3 · LimitedFinal reportTrick Trikes Stss · Holden, MOThe noncertificated pilot’s failure to maintain aircraft control during takeoff.NTSB CEN20LA360Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 180 · St Louis, MOA total loss of engine power due to improper maintenance of the mixture control cable and attachment hardware, which led to a forced landing into a congested area.NTSB CEN20CA062Accident · No injuriesData collectionFinal reportBeech 76 · St. Charles, MOThe pilot receiving instruction’s misunderstanding of the flight instructor’s instruction and the pilot's and the instructor’s insufficient use of rudder while adding power to the operating engine, which resulted in the airplane rolling left and the wing…NTSB GAA17CA272Accident · No injuriesData collectionFinal reportJohn Murphy JSX-2 · Chesterfield, MOThe pilot’s failure to ensure that the canopy was properly secured before takeoff, which resulted in an unstable landing flare and hard landing.NTSB CEN17LA061Accident · Minor injuriesLimited investigationFinal reportMead RV 8A · Farmington, MOThe pilot's failure to maintain airplane control during takeoff in crosswind conditions.NTSB CEN14CA382Accident · Serious injuriesData collectionFinal reportGremminger Greg Magni M 16 · Cape Girardeau, MOThe pilot's failure to maintain sufficient altitude while maneuvering which led to a collision with power lines.NTSB CEN12LA636Accident · 1 fatalLimited investigationFinal reportJDT Mini-Max 1500R · Cameron, MOThe pilot's failure to maintain adequate airspeed during initial climb, which resulted in an aerodynamic stall and spin at a low altitude.NTSB CEN12IA592Incident · No injuriesIncident investigationFinal reportBritish Aerospace BAE Jetstream 3101 · Kansas City, MOThe flight crew’s failure to ensure that the cargo door was properly fastened before departure.NTSB CEN12LA637Accident · No injuriesLimited investigationFinal reportSackman Sackman Special · Ste. Genevieve, MOThe loss of engine power during a low level maneuver due to oil starvation for reasons that could not be determined during postaccident examination.NTSB CEN11FA469Accident · 1 fatalField investigationFinal reportBowie Richard Sonerai II · Dudley, MOFuel starvation due to the pilot’s improper fuel management and his decision to conduct the flight while under the influence of marijuana.NTSB CEN11CA314Accident · No injuriesData collectionFinal reportPrichard Kevin Legacy 2K · Kansas City, MOThe pilot's misjudgment of the landing area, which resulted in the airplane touching down on a grass area adjacent to the runway and between parallel taxiways.NTSB CEN10LA171Accident · No injuriesLimited investigationFinal reportLoehr Thomas H Zenith Stol CH701 · Eldon, MOA loss of engine thrust during takeoff due to the failure of the engine-to-propeller drive belts as a result of improper belt tension. Contributing to the accident was the non-certificated pilot's improper preflight inspection.NTSB CEN09CA468Accident · No injuriesData collectionFinal reportCorvus Carone MK 1 · Lee's Summit, MOA loss of engine power for undetermined reasons.NTSB CEN09CA423Accident · No injuriesData collectionFinal reportLewis Keith O Viggenite · Chesterfield, MOThe loss of engine power for unknown reasons.NTSB CHI06LA164Accident · 1 fatalLimited investigationFinal reportMiller Zenair Cricket MC-12 · Lee's Summit, MOThe pilot's failure to maintain airspeed while operating in the traffic pattern after the loss of power in one engine, resulting in an inadvertent stall/spin. An additional cause was the loss of engine power in one of the two engines for undetermined reasons.NTSB CHI06LA069Accident · No injuriesLimited investigationFinal reportZilz Zenith CH801 · Moscow Mills, MOA loss of engine power due to inadequate design of the engine compartment which resulted in inadequate engine cooling and fuel starvation due to vapor lock. Factors associated with the accident were the utility pole and trees which were contacted during the…NTSB CHI06CA003Accident · No injuriesData collectionFinal reportDallMeyer Zenith CH-701 · Rolla, MOThe pilot misjudged the power required during the landing flare which resulted in a hard landing on the nose wheel. A factor associated with the accident was the pilot's lack of experience in the airplane.NTSB CHI05CA100Accident · Minor injuriesData collectionFinal reportMitchell KR-2S · Cameron, MOThe loss of engine power for an undetermined reason and the misjudged landing flare which resulted in the bounced landing. Additional causes were the improper recovery from the bounced landing and the inadvertent stall. A factor was the pilot's lack of…NTSB CHI03IA207Incident · No injuriesIncident investigationFinal reportSpiker Rotorway 162F · Creve Coeur, MOThe inadvertent dynamic rollover of the helicopter after the helicopter became airborne during an engine run-up.NTSB CHI03FA099Accident · Serious injuriesField investigationFinal reportDassault DA-20C · St Louis, MOThe pilot in command's improper in-flight decision not to divert to an alternate destination resulting in the exhaustion of the airplane's fuel supply, and his failure to relay his low fuel state to air traffic control in a timely manner.NTSB CHI02LA108Accident · Minor injuriesLimited investigationFinal reportLong FEW TF-51 · Summersville, MOThe unsuitable terrain encountered during the power off landing. The loss of engine power for unknown reasons was a contributing factor.NTSB CHI00LA224Accident · Minor injuriesLimited investigationFinal reportBohner Pitts Model 12 · Neosho, MOThe unsuitable terrain the pilot selected during his emergency landing. Factors were the hay rolls and the loss of engine power for undetermined reasons.NTSB CHI00LA119Accident · No injuriesLimited investigationFinal reportBrice Rotorway Exec 162F · Kimberling, MOaircraft control not being maintained by the pilot. Factors to the accident were the encountered dynamic rollover and the uneven terrain.NTSB CHI96LA010Accident · No injuriesLimited investigationFinal reportCrowley/Zenair Zodiac CH-600 · Columbia, MOA loss of elevator control as a result of the top elevator control cable working its way out of a fitting.NTSB CHI92LA126Accident · Serious injuriesLimited investigationFinal reportCessna 170B · St. James, MOThe pilot's failure to maintain clearance from terrain during the attempted takeoff and climb out. A related factor was the rising terrain.NTSB MKC87IA043Incident · No injuriesIncident investigationFinal reportEmbraer EMB-120 · Springfield, MOThe PIC of this air midwest flt 4408 said that, while on initial climb, power (np) on the left engine decayed to 60% and would not recover. The engine was feathered by condition lever but the torque rose to 140% while returning for a landing, according to the…NTSB MKC83LA139Accident · No injuriesLimited investigationFinal reportBowlin Quickie · Grain Valley, MOThe acft made a landing during its first test flight. The plt stated that he had slowed the acft to below 65 mph at about 10 ft above the rwy. At this point the canard stalled & the nose pitched down. There was no damage on the first rwy contact. On the…NTSB MKC78DCG10Accident · No injuriesClosedTerrill SPEC-L · Kimberling, MONTSB MKC76FCA39Accident · No injuriesClosedBell 47J · St Louis, MONTSB MKC76DCA07Accident · No injuriesClosedHughes 269B · Kennett, MONTSB MKC68D0537Accident · No injuriesClosedBeech D95A · Kansas City, MONTSB MKC68D0214Accident · Minor injuriesClosedCessna 140 · Independence, MONTSB MKC66F0499Accident · No injuriesClosedPiper PA-22 · Columbia, MO