NTSB investigations: Allison 250-C20 series, NV

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

19812026
NTSB investigations: Allison 250-C20 series, NV per year, 1981–2026: 8 cases
19811
19831
19891
20061
20071
20131
20181
20201

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.\"eventStateOrRegion\" = 'NV' 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.

NTSB WPR20CA162Accident · No injuriesClass 4 · Data collectionFinal reportBell 206 · Elko, NVThe pilot's failure to maintain helicopter control in gusting wind that resulted in a loss in altitude and subsequent collision with a fence.May 30, 2020 · N401HP · Substantial damageNTSB GAA18CA512Accident · No injuriesClass 4 · Data collectionFinal reportBell 206 · Battle Mountain, NVThe pilot's failure to maintain the proper altitude and airspeed while flying in a canyon in gusting wind conditions.Aug 18, 2018 · N8052G · DestroyedNTSB WPR13GA128Accident · 1 fatalFinal reportBell 206B · Eureka, NVThe pilot’s failure to maintain clearance from a wire while maneuvering during low-altitude operations. Contributing to the accident was task- and/or work-related fatigue.Feb 18, 2013 · N20620 · Substantial damageNTSB LAX07CA177Accident · Minor injuriesData collectionFinal reportMD Helicopters 500-E · Yerington, NVThe failure of the student and instructor to maintain an adequate main rotor rpm, and the instructor’s inadequate in-flight supervision while conducting a low-level simulated emergency procedure, which resulted in a hard landing.May 27, 2007 · N526BH · Substantial damageNTSB LAX07CA034Accident · No injuriesData collectionFinal reportBell 206B · Boulder City, NVthe pilot's inadequate planning and decision in his failure to reduce the engine throttle to ground idle prior to exiting the helicopter.Nov 11, 2006 · N59571 · Substantial damageNTSB DEN90T#A01Accident · No injuriesClass 3Final reportMBB BO-105S · Mercury, NVOct 2, 1989 · N7EG · Substantial damageNTSB LAX83FA400Accident · Minor injuriesField investigationFinal reportBell 206-B · Battle Mountain, NVThe helicopter lost power during takeoff,touched down on the left skid,bounced and rolled over. The flt had originated at 1315 at a local field and proceeded to pick up a passenger at another location. The acft had just landed, picked up the passenger and was…Aug 22, 1983 · N17355 · DestroyedNTSB LAX82DXQ02Accident · No injuriesClosedBell 206B · Ely, NVNov 17, 1981 · N3893Y · Substantial damage