Major NTSB investigations: Dehavilland DHC-3

5 cases on aircraft the registry lists as Dehavilland DHC-3. 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

20102026
Major NTSB investigations: Dehavilland DHC-3 per year, 2010–2026: 5 cases
20101
20131
20151
20191
20221

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.board_report_url IS NOT NULL OR c.\"investigationClass\" = 'Class 1' OR c.\"caseType\" = 'Major - Launch')
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2802412', '2800202', '2802414'))
  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 DCA22MA193Accident · 10 fatalClass 1 · MajorFinal reportDehavilland DHC-3 · Freeland, WAThe in-flight unthreading of the clamp nut from the horizontal stabilizer trim actuator barrel due to a missing lock ring, which resulted in the horizontal stabilizer moving to an extreme trailing-edge-down position rendering the airplane’s pitch…Sep 4, 2022 · N725TH · DestroyedNTSB CEN19MA141Accident · 6 fatalClass 1 · MajorFinal reportDe Havilland DHC-2 · Ketchikan, AKThe inherent limitations of the see-and-avoid concept, which prevented the two pilots from seeing the other airplane before the collision, and the absence of visual and aural alerts from both airplanes’ traffic display systems, while operating in a geographic…May 13, 2019 · N952DB · 2 aircraft · DestroyedNTSB ANC15MA041Accident · 9 fatalClass 1 · MajorFinal reportDehavilland DHC-3 · Ketchikan, AK(1) the pilot's decision to continue visual flight into an area of instrument meteorological conditions, which resulted in his geographic disorientation and controlled flight into terrain; and (2) Promech's company culture, which tacitly endorsed flying in…Jun 25, 2015 · N270PA · Substantial damageNTSB DCA13MA121Accident · 10 fatalMajor investigationFinal reportDehavilland DHC-3 · Soldotna, AKThe operator's failure to determine the actual cargo weight, leading to the loading and operation of the airplane outside of the weight and center of gravity limits contained in the airplane flight manual, which resulted in an aerodynamic stall. Contributing…Jul 7, 2013 · N93PC · DestroyedNTSB ANC10MA068Accident · 5 fatalClass 1 · MajorFinal reportDehavilland DHC-3 · Aleknagik, AKThe pilot's temporary unresponsiveness for reasons that could not be established from the available information. Contributing to the investigation's inability to determine exactly what occurred in the final minutes of the flight was the lack of a cockpit…Aug 9, 2010 · N455A · Substantial damage