{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":20,"name":"General Electric CT58-140-1","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-ct58-140-1#airworthiness"},{"count":33,"name":"General Electric CT58-140-2","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-ct58-140-2#airworthiness"},{"count":13,"name":"General Electric CT58 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-ct58-series#airworthiness"},{"count":17,"name":"General Electric T58 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-t58-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":"1997-12-19","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/266E8AC52773DA8986256846006BB851.0001","id":"97-21-08","kind":"AD","name":"Airworthiness directive 97-21-08","published":"1997-10-20","subject":"Stage 1 forward cooling plate","system":"engine","type":"directive","url":"https://eflight.com/directives/97-21-08"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}