NTSB investigations: Allison 250-C20 series, MN
8 cases on aircraft whose registry engine model is Allison 250-C20 series. 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
| 1998 | 1 |
|---|---|
| 1999 | 1 |
| 2001 | 1 |
| 2003 | 2 |
| 2007 | 1 |
| 2011 | 1 |
| 2012 | 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\" = 'MN' 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 ('03020'))
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" = 'MN' 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 ('03020'))
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 CEN12CA319Accident · Serious injuriesData collectionFinal reportHughes 369HS · Delavan, MNThe pilot’s failure to maintain clearance with power lines during an aerial application flight.NTSB CEN11CA533Accident · No injuriesData collectionFinal reportGarlick Helicopters OH-58C · Rushford, MNThe pilot's diverted attention, which resulted in the failure to maintain clearance from the power line.NTSB CHI07LA193Accident · No injuriesLimited investigationFinal reportHughes 369D · Comfrey, MNThe loss of engine power due to the loose pressure line during aerial application maneuvers which resulted in a hard forced landing.NTSB CHI04LA017Accident · Minor injuriesLimited investigationFinal reportHughes 369HS · Evansville, MNThe pilot's misjudgment of clearance from the surface of the lake during the aerial application pass. The low altitude operation, glassy water, and his visual perception were contributing factors.NTSB CHI03LA172Accident · Minor injuriesLimited investigationFinal reportBell 206B · Baxter, MNThe pilot's failure to maintain control of the helicopter due to a loss of tail rotor effectiveness. Factors contributing to this accident were the helicopter's low airspeed, low altitude, the crosswind, and the trees.NTSB CHI01LA327Accident · Minor injuriesLimited investigationFinal reportBell 206B-III · Park Rapids, MNThe pilot not maintaining altitude/clearance when he maneuvered above the glassy lake. A factor to the accident was the glassy lake condition.NTSB CHI00FA020Accident · 2 fatalField investigationFinal reportBell 206B · Cottage Grove, MNUndetermined.NTSB CHI98TA354Accident · No injuriesFinal reportBell 206B-3 · Hinkley, MNLoss of engine power due to failure of the engine governor.