{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Model families","items":[{"count":155,"name":"Douglas DC-3","note":"","unit":"registered","url":"https://eflight.com/models/douglas/dc-3"},{"count":22,"name":"Douglas A-26","note":"","unit":"registered","url":"https://eflight.com/models/douglas/a-26"},{"count":17,"name":"Douglas DC-6","note":"","unit":"registered","url":"https://eflight.com/models/douglas/dc-6"},{"count":12,"name":"Douglas C-47","note":"","unit":"registered","url":"https://eflight.com/models/douglas/c-47"},{"count":11,"name":"Douglas B-26","note":"","unit":"registered","url":"https://eflight.com/models/douglas/b-26"},{"count":9,"name":"Douglas AD-4","note":"","unit":"registered","url":"https://eflight.com/models/douglas/ad-4"},{"count":9,"name":"Douglas C-118","note":"","unit":"registered","url":"https://eflight.com/models/douglas/c-118"},{"count":8,"name":"Douglas DC-10","note":"","unit":"registered","url":"https://eflight.com/models/douglas/dc-10"}],"relation":"makes"},{"group":"Engines","items":[{"count":86,"name":"Pratt & Whitney R-1830 series","note":"1350 hp","unit":"of these aircraft","url":"https://eflight.com/engines/pratt-whitney-r-1830-series"},{"count":40,"name":"Pratt & Whitney R-2800 series","note":"2000 hp","unit":"of these aircraft","url":"https://eflight.com/engines/pratt-whitney-r-2800-series"},{"count":11,"name":"Wright R-1820 series","note":"1475 hp","unit":"of these aircraft","url":"https://eflight.com/engines/wright-r-1820-series"},{"count":9,"name":"Wright C9GC&D series","note":"1200 hp","unit":"of these aircraft","url":"https://eflight.com/engines/wright-c9gc-d-series"},{"count":6,"name":"Pratt & Whitney PT6A series","note":"750 hp","unit":"of these aircraft","url":"https://eflight.com/engines/pratt-whitney-pt6a-series"}],"relation":"powered by"},{"group":"Type certificates","items":[{"count":null,"name":"The Boeing Company","note":"holds the FAA type certificates","unit":"","url":""},{"count":null,"name":"None","note":"holds the FAA type certificates","unit":"","url":""},{"count":null,"name":"Boeing CO","note":"holds the FAA type certificates","unit":"","url":""}],"relation":"held by"},{"group":"Where they are","items":[{"count":39,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":39,"name":"Alaska","note":"","unit":"of these aircraft","url":"https://eflight.com/states/AK"},{"count":30,"name":"Florida","note":"","unit":"of these aircraft","url":"https://eflight.com/states/FL"},{"count":26,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"},{"count":20,"name":"Wisconsin","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WI"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":18,"name":"Basler Turbo Conversions LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/basler-turbo-conversions-llc"},{"count":11,"name":"Everts Air Fuel INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/everts-air-fuel-inc"},{"count":8,"name":"Tatonduk Outfitters LTD","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/tatonduk-outfitters-ltd"},{"count":7,"name":"Omega Air INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/omega-air-inc"},{"count":7,"name":"Draken International LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/draken-international-llc"}],"relation":"owned by"},{"group":"Record","items":[{"count":292,"name":"NTSB accidents and incidents involving Douglas aircraft","note":"as the NTSB spells the maker's name","unit":"cases since 1982","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"involved in"},{"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":"douglas","name":"Douglas","registered":305,"type":"maker","url":"https://eflight.com/makers/douglas"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}