NTSB investigations: Allison 250-C20 series, LA
15 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
| 1979 | 1 |
|---|---|
| 1980 | 1 |
| 1995 | 1 |
| 1996 | 2 |
| 1997 | 2 |
| 2000 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 2 |
| 2009 | 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\" = 'LA' 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" = 'LA' 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 CEN13FA009Accident · 1 fatalField investigationFinal reportBell 206B · Crowley, LAThe pilot’s failure to maintain clearance from the broadcast tower guy-wires.NTSB CEN11CA303Accident · Minor injuriesData collectionFinal reportBell 206 · Venice, LAThe pilot's improper use of the collective and cyclic control during taxi operations, which induced a dynamic rollover.NTSB CEN09LA571Accident · Minor injuriesLimited investigationFinal reportMesserschmitt-Boelkow-Blohm BO-105S · Thibodaux, LAThe pilot's inability to maintain control due to the mechanic's inadvertent switching of two cyclic control tubes of different lengths during maintenance.NTSB DFW05LA239Accident · Minor injuriesLimited investigationFinal reportBell 206B · New Orleans, LAThe pilot's failure to maintain directional control after encountering a loss of tail rotor effectiveness. A contributing factor was the lack of suitable terrain.NTSB DFW05LA252Accident · Minor injuriesLimited investigationFinal reportBell 206B · Myrtle Grove, LAThe pilot's loss of control in flight for undetermined reasons.NTSB DFW05FA032Accident · Serious injuriesField investigationFinal reportHughes 369D · Zachary, LAThe loss of engine power as a result of fatigue cracking of the compressor adaptor coupling initiated by fretting on the pilot diameter and subsequent disconnection of the compressor from the turbine assembly. A contributing factor was the low operating…NTSB FTW03LA216Accident · No injuriesLimited investigationFinal reportBell 206B-3 · Kisatchie, LAA loss of engine power due to water contamination in the fuel system.NTSB FTW00LA181Accident · Minor injuriesLimited investigationFinal reportBell 206B · Deville, LAthe pilot's failure to maintain clearance with the external load that was setting on the ground while hovering. A contributing factor was the pilot's diverted attention.NTSB FTW97LA252Accident · Serious injuriesLimited investigationFinal reportBell 206B · New Iberia, LAthe pilot's improper in-flight planning/decision. A related factor was his failure to follow the company procedure of maintaining visual contact with the external long-line cable, while hovering with it attached.NTSB FTW97FA121Accident · 1 fatalField investigationFinal reportMBB BO-105S · Lena, LAThe pilot's continued VFR flight into instrument meteorological conditions, and his subsequent loss of aircraft control due to spatial disorientation. Factors were the pilot not following company procedures and directives, the low ceiling, and the dark night…NTSB FTW97LA030Accident · No injuriesLimited investigationFinal reportBell 206B-3 · Creole, LAthe pilot's inadequate preflight by failing to remove the 100 foot long line and the external cargo basket from the helicopter before takeoff, and/or his failure to ensure that clearance/altitude was maintained from the fence.NTSB FTW96LA147Accident · Minor injuriesLimited investigationFinal reportBell 206BIII · Houma, LAthe pilot's attempted maneuver which exceeded the dynamic capability of the helicopter.NTSB FTW95IA397Incident · No injuriesIncident investigationFinal reportMBB BO-105C · Lafayette, LAa short in the 'jam proof system' solenoid valve which prevented activation of the backup hydraulic system and resulting in a cyclic hardover. Factors were the contaminated hydraulic fluid and the resulting jammed actuator (longitudinal control slider).NTSB FTW80FA081Accident · No injuriesClosedBell 206B · Intercstl City, LANTSB FTW80FRD08Accident · No injuriesClosedHughes 369D · Abbeville, LA