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NTSB investigations: Allison 250-C30 series

6 cases on aircraft whose registry engine model is Allison 250-C30 series, where the first occurrence was “In flight encounter with weather”. 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

19852026

Where

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Latest 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.engine_model_code IN ('03015')
      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\" = 240))
  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.

NTSB ANC06LA066Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Juneau, AKThe pilot's failure to maintain adequate altitude/clearance from terrain while maneuvering in adverse weather conditions. Factors associated with the accident are the pilot's decision to continue flight into adverse weather, fog, whiteout and flat light…Jun 1, 2006 · N45RP · Substantial damageNTSB FTW04FA007Accident · 3 fatalField investigationFinal reportBell 206L-3 · W. Cameron 509The pilot's loss of control following an inadvertent encounter with adverse weather conditions. Contributing factors were the prevailing thunderstorms, the low ceilings, and the miscommunication between the pilot and the company's communication center in…Oct 10, 2003 · N81671 · DestroyedNTSB FTW01LA004Accident · Serious injuriesLimited investigationFinal reportBell 206-L1 · Jasper, TXThe pilot's inadvertent VFR flight into instrument meteorological conditions, which resulted in his failure to maintain control of the helicopter. Factors were the fog and the pilot's lack of instrument flight experience.Oct 2, 2000 · N321CA · Substantial damageNTSB FTW97LA217Accident · No injuriesLimited investigationFinal reportBell 206L-3 · Weston, COthe pilot's improper in-flight planning/decision and failure to maintain adequate altitude and/or clearance from rising mountainous/hilly terrain. The unfavorable wind condition and low airspeed were related factors.Jun 12, 1997 · N207DS · Substantial damageNTSB BFO94FA135Accident · 3 fatalField investigationFinal reportBell 206L-4 · Whiting, NJThe pilot's improper in-flight planning/decision, flight into instrument meteorological conditions (IMC), and subsequent spatial disorientation, which resulted in loss of aircraft control. Factors related to the accident were: darkness, the adverse weather…Aug 13, 1994 · N124NH · DestroyedNTSB FTW85LA119Accident · Minor injuriesLimited investigationFinal reportSikorsky S-76A · Houma, LAThe aircrew had just completed a medivac flt & were repositioning the helicopter to the home base. While they were en route, the company dispatcher informed the crew that fog was moving into the area & that they had better hurry. During the night apch, the…Feb 19, 1985 · N31223 · Destroyed