Fatal NTSB investigations: Allison 250-C47 series
17 cases on aircraft whose registry engine model is Allison 250-C47 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
| 2001 | 1 |
|---|---|
| 2003 | 1 |
| 2004 | 3 |
| 2006 | 1 |
| 2008 | 1 |
| 2012 | 2 |
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2022 | 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.\"highestInjuryLevel\" = 'Fatal'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03029'))
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."highestInjuryLevel" = 'Fatal'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03029'))
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 CEN23FA019Accident · 1 fatalClass 3 · FieldFinal reportBell 407 · Morgan City, LAThe pilot’s loss of consciousness due to a cardiovascular event.NTSB CEN22FA100Accident · 2 fatalClass 3 · FieldFinal reportBell 407 · Houma, LAThe pilot’s sudden loss of consciousness for undetermined reasons during cruise flight, which resulted in a loss of control and impact with terrain.NTSB ERA20FA056Accident · 1 fatalClass 3 · FieldFinal reportBell 407 · Headland, ALPilot incapacitation by a sudden cardiac event related to severe coronary artery disease, which resulted in a loss of helicopter control.NTSB CEN20FA035Accident · 2 fatalClass 3 · FieldFinal reportBell 407 · Gulf of Mexico (Gulf of Mexico)A total loss of engine power due to the failure of the engine’s Nos. 3 and 4 bearings and the power turbine pinion gear, and subsequent loss of main rotor rpm, which resulted in a loss of control and impact with the water.NTSB CEN19FA095Accident · 2 fatalClass 2 · FieldFinal reportBell 407 · Galliano, LAThe pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions.NTSB ERA18FA122Accident · 2 fatalField investigationFinal reportMD Helicopter 600 · Smethport, PAThe helicopter pilot's failure to maintain adequate clearance during power line construction work, which resulted in the helicopter's main rotor striking and becoming entangled with a wire and a subsequent dynamic rollover and collision with terrain.…NTSB CEN17FA112Accident · 1 fatalField investigationFinal reportBell 407 · Chauvin, LAThe pilot's failure to maintain proper altitude resulting in a collision with water for reasons that could not be determined based on the available information.NTSB WPR16FA037Accident · 4 fatalField investigationFinal reportBell 407 · McFarland, CAThe pilot's loss of control and collision with terrain while attempting a course reversal after inadvertently entering an area of reduced visibility weather conditions. Contributing to the accident was the pilot's lack of recent experience with night time…NTSB CEN13FA003Accident · 1 fatalField investigationFinal reportBell 407 · Intracoastal City, LAThe pilot’s decision to attempt a local flight in marginal visual meteorological conditions and his subsequent loss of control following an inadvertent encounter with instrument metrological conditions shortly after takeoff.NTSB ANC12FA084Accident · 1 fatalField investigationFinal reportMcdonnell Douglas Helicopter 600N · Delta Junction, AKThe pilot’s failure to clear the left landing gear skid, which resulted in the entanglement of the left landing gear skid with a log, and his subsequent application of collective pitch, which resulted in a dynamic rollover.NTSB DEN08MA116Accident · 7 fatalMajor investigationFinal reportBell 407 · Flagstaff, AZBoth helicopter pilots’ failure to see and avoid the other helicopter on approach to the helipad. Contributing to the accident were the failure of N407GA’s pilot to follow flight arrival route guidelines, and the failure of N407MJ’s pilot to follow…NTSB NYC07FA048Accident · 2 fatalField investigationFinal reportBell 407 · Dagsboro, DEThe pilot's improper decision to depart under visual flight rules into night instrument meteorological conditions. Contributing to the accident was the fog and the dark night conditions.NTSB DFW05FA040Accident · 1 fatalField investigationFinal reportBell 407 · Ship Shoal 130EThe pilot's failure to maintain clearance with a stationary object while maneuvering for landing. Contributing factors were the inadequate facilities available for landing, the pilot's lack of information regarding the landing area, and the operational status…NTSB SEA04MA167Accident · 5 fatalMajor investigationFinal reportBell 407 · Battle Mountain, NVThe pilot's failure to maintain clearance from mountainous terrain. Contributing factors were the pilot's improper decision to take the direct route over mountainous terrain, the dark night conditions, and the pressure to complete the mission induced by the…NTSB CHI04MA182Accident · 4 fatalMajor investigationFinal reportBell 407 · Newberry, SCThe pilot's failure to maintain terrain clearance as a result of fog conditions. A contributing factor was inadequate weather and dispatch information relayed to the pilot.NTSB FTW03FA097Accident · 2 fatalField investigationFinal reportBell 407 · Mi 700The catastrophic failure of the engine resulting from 1st stage turbine wheel blade failure due to type 1 hot corrosion (sulfidation). Contributing factors were the pilot's failure to brief the passengers on emergency safety equipment (life raft), the pilot's…NTSB CHI01LA145Accident · 1 fatalLimited investigationFinal reportBell Helicopter 407 · Schoolcraft, MIThe pilot rated passenger failed to maintain clearance with the rotor blades as he exited the helicopter.