NTSB investigations: Mooney M20J
16 cases on aircraft the registry lists as Mooney M20J, where the first occurrence was “Loss of engine power(total) - mech failure/malf”. 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
| 1987 | 1 |
|---|---|
| 1994 | 1 |
| 1995 | 4 |
| 1996 | 1 |
| 1999 | 3 |
| 2000 | 1 |
| 2002 | 1 |
| 2003 | 2 |
| 2005 | 2 |
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.aircraft_model_code IN ('5870219')
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\" = 351))
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.aircraft_model_code IN ('5870219')
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" = 351))
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 SEA05LA153Accident · No injuriesLimited investigationFinal reportMooney M20J · Sunriver, ORThe loss of engine power as a result of both sets of magneto points failing to open due to excessive wear of the nylon cam followers. The excessive wear of the cam followers was due to maintenance personnel's failure to follow the magneto manufacturer's…NTSB ATL05LA051Accident · Serious injuriesLimited investigationFinal reportMooney 20P · Smith, ALMaintenance personnel failure to properly torque the cylinder head during installation that resulted in the separation from the engine assembly and the subsequent loss of power.NTSB MIA04LA013Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Ocala, FLloss of engine power due to oil starvation for undetermined reasons, resulting in an in-flight collision with a fence during a forced landing.NTSB FTW03LA092Accident · Minor injuriesLimited investigationFinal reportMooney M20J · New Orleans, LAThe loss of engine power as a result of the separation of the magneto assembly due to inadequate maintenance by unknown personnel. A contributing factor was the lack of suitable terrain for the forced landing.NTSB ATL02LA103Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Charleston, SCTotal loss of engine power due to oil system starvation. A factor was the transmission wire encountered during emergency descent.NTSB DEN00LA143Accident · No injuriesLimited investigationFinal reportMooney M20J · Espanola, NMThe lack of suitable terrain for a forced landing. A factor was a complete loss of power due to mechanical failure.NTSB NYC00LA054Accident · No injuriesLimited investigationFinal reportMooney 20J · New Milford, CTFailure of 3 of the 4 connecting rods for an undetermined reason.NTSB LAX99LA287Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Emigrant Gap, CAThe fatigue failure and separation of the number three cylinder due to the cylinder overhaul facility's improper inspection and quality control processes.NTSB CHI99LA122Accident · Serious injuriesLimited investigationFinal reportMooney M20J · Vienna, ILThe worn ignition points/cam follower assembly, and uneven landing terrain.NTSB FTW96LA357Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Lubbock, TXinadequate maintenance by maintenance personnel, which resulted in a total loss of engine power when the magneto disengaged from the engine. A related factor was the lack of suitable terrain for a forced landing.NTSB MIA96LA052Accident · Minor injuriesLimited investigationFinal reportMooney M20 · Eastover, SCinadequate overhaul procedures by maintenance personnel resulting in an oil pump failure and subsequent loss of engine power.NTSB CHI95LA139Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Kirksville, MOthe loss of engine power due to failure of the engine's hydraulic tappet body heads. Related factors in the accident were the restricted visual lookout, and the unsuitable terrain encountered during the forced landing.NTSB LAX95LA125Accident · Minor injuriesLimited investigationFinal reportMooney M20J · Pacoima, CAthe failure of the engine overhaul shop to install the correct gasket stack on the propeller governor pad as required by the engine manufacturer.NTSB MIA95LA056Accident · Minor injuriesLimited investigationFinal reportMooney 20J · St. Petersburg, FLThe failure of the No. 3 connecting rod bolt due to oil starvation for undetermined reasons. This resulted in a total loss of engine power, forced landing, and subsequent ditching.NTSB FTW94LA089Accident · No injuriesLimited investigationFinal reportMooney M20J · Gallup, NMThe loss of engine power due to the failure of the number 3 exhaust valve. A factor was the lack of suitable terrain available to execute the forced landing.NTSB FTW88LA002Accident · No injuriesLimited investigationFinal reportMooney M-20-J · Kerrville, TXAcft was substantially damaged when it collided with a road sign and the grnd during an off arpt emergency lndg following a complete eng failure during descent. Plt stated that about 20 mins out from his dest, the oil press decreased into the yellow arc, but…