{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":1,"name":"Md Helicopters Inc 369","note":"","unit":"with this engine series","url":"https://eflight.com/models/md-helicopters-inc/369"}],"relation":"powers"},{"group":"Where they are","items":[{"count":1,"name":"Arizona","note":"","unit":"of these aircraft","url":"https://eflight.com/states/AZ"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Boeing CO","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/boeing-co"}],"relation":"owned by"},{"group":"Airworthiness","items":[{"count":4,"name":"FAA orders naming the Rolls-Royce 250-C30R/3M","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/rolls-royce-250-c30r-3m#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"The fleet by engine type","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Every engine series","note":"","unit":"","url":"https://eflight.com/engines"}],"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":{"aircraft":1,"horsepower":650,"id":"rolls-royce-250-c30r-3m","maker":"Rolls-Royce","name":"Rolls-Royce 250-C30R/3M","thrust_lb":null,"type":"Turboshaft","url":"https://eflight.com/engines/rolls-royce-250-c30r-3m"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}