{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaces 96-24-09","note":"","unit":"","url":"https://eflight.com/directives/96-24-09"},{"count":null,"name":"Replaced by 98-10-03","note":"","unit":"","url":"https://eflight.com/directives/98-10-03"}],"relation":"related to"},{"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":"1997-12-03","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/8468F52E7A04F0F486256B87005C21E3.0001","id":"97-21-09","kind":"AD","name":"Airworthiness directive 97-21-09","published":"1997-11-18","subject":"Engine Main Electrical Harness Assembly","system":"engine","type":"directive","url":"https://eflight.com/directives/97-21-09"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}