{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":6,"name":"Rolls-Royce 250-B17C","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-b17c#airworthiness"},{"count":2,"name":"Rolls-Royce 250-B17D","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-b17d#airworthiness"},{"count":43,"name":"Rolls-Royce 250-C20","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20#airworthiness"},{"count":214,"name":"Rolls-Royce 250-C20B","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20b#airworthiness"},{"count":2,"name":"Rolls-Royce 250-C20F","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20f#airworthiness"},{"count":82,"name":"Rolls-Royce 250-C20J","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20j#airworthiness"},{"count":2,"name":"Rolls-Royce 250-C20S","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20s#airworthiness"},{"count":51,"name":"Rolls-Royce 250-C20W","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c20w#airworthiness"},{"count":15,"name":"Rolls-Royce 250-C47 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-250-c47-series#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"group":"More","items":[{"count":null,"name":"Every FAA order","note":"","unit":"","url":"https://eflight.com/directives"},{"count":null,"name":"Every aircraft system","note":"","unit":"","url":"https://eflight.com/systems"}],"relation":"see also"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"effective":"2005-02-08","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/08AF923AB4A4F3A686256F7F00595847.0001","id":"2004-26-09","kind":"AD","name":"Airworthiness directive 2004-26-09","published":"2005-01-04","subject":"Compressor Adaptor Couplings","system":"engine","type":"directive","url":"https://eflight.com/directives/2004-26-09"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}