{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Engines","items":[{"count":1,"name":"Wright R-1820 series","note":"1475 hp","unit":"of these aircraft","url":"https://eflight.com/engines/wright-r-1820-series"},{"count":1,"name":"General Electric CT58-140-2","note":"1400 hp","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-ct58-140-2"},{"count":1,"name":"General Electric CT58 series","note":"1350 hp","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-ct58-series"},{"count":1,"name":"General Electric T58 series","note":"1350 hp","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-t58-series"}],"relation":"powered by"},{"group":"Type certificates","items":[{"count":null,"name":"Columbia Helicopters INC","note":"holds the FAA type certificates","unit":"","url":""}],"relation":"held by"},{"group":"Where they are","items":[{"count":3,"name":"Oregon","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OR"},{"count":1,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"},{"count":1,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":3,"name":"Columbia Helicopters INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/columbia-helicopters-inc"},{"count":1,"name":"Museum Of Flight Foundation","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/museum-of-flight-foundation"},{"count":1,"name":"Classic Rotors Museum","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/classic-rotors-museum"}],"relation":"owned by"},{"group":"Analytics","items":[{"count":null,"name":"Biggest makers and model families","note":"","unit":"","url":"https://eflight.com/analytics/makers"},{"count":null,"name":"Accidents by model and by maker","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"id":"vertol","name":"Vertol","registered":5,"type":"maker","url":"https://eflight.com/makers/vertol"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}