{"as_of":"2026-10-12","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":2,"name":"Bell 206 JetRanger and LongRanger","note":"","unit":"with this engine series","url":"https://eflight.com/models/bell/206"},{"count":1,"name":"Aerospatiale AS-355","note":"","unit":"with this engine series","url":"https://eflight.com/models/aerospatiale/as-355"}],"relation":"powers"},{"group":"Where they are","items":[{"count":1,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":1,"name":"Indiana","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IN"},{"count":1,"name":"Florida","note":"","unit":"of these aircraft","url":"https://eflight.com/states/FL"}],"relation":"registered in"},{"group":"Airworthiness","items":[{"count":111,"name":"Failure reports on the Allison (Rolls-Royce) 250-C20R","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/allison-rolls-royce-250-c20r#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":3,"horsepower":450,"id":"allison-rolls-royce-250-c20r","maker":"Allison (Rolls-Royce)","name":"Allison (Rolls-Royce) 250-C20R","thrust_lb":null,"type":"Turboshaft","url":"https://eflight.com/engines/allison-rolls-royce-250-c20r"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}