{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":120,"name":"Airbus A300","note":"","unit":"registered","url":"https://eflight.com/models/airbus/a300#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Other and general","note":"","unit":"","url":"https://eflight.com/systems/other"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2024-14-07","note":"","unit":"","url":"https://eflight.com/directives/2024-14-07"},{"count":null,"name":"Replaced by 2025-18-07","note":"","unit":"","url":"https://eflight.com/directives/2025-18-07"},{"count":null,"name":"Replaced by 2023-12-07","note":"","unit":"","url":"https://eflight.com/directives/2023-12-07"},{"count":null,"name":"Replaced by 2022-25-12","note":"","unit":"","url":"https://eflight.com/directives/2022-25-12"}],"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":"2018-10-23","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/31309C09B1BB310C8625830C0048CA4B.0001","id":"2018-18-21","kind":"AD","name":"Airworthiness directive 2018-18-21","published":"2018-09-18","subject":"Time Limits/Maintenance Checks","system":"other","type":"directive","url":"https://eflight.com/directives/2018-18-21"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}