{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":157,"name":"Beechcraft 1900 Airliner","note":"","unit":"registered","url":"https://eflight.com/models/beechcraft/1900#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":"Replaces 97-22-16","note":"","unit":"","url":"https://eflight.com/directives/97-22-16"}],"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":"2004-02-19","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/1CFB055ADA1DEFCD86256E1B0059C6EA.0001","id":"2004-01-13","kind":"AD","name":"Airworthiness directive 2004-01-13","published":"2004-01-14","subject":"Vent blower assemblies","system":"other","type":"directive","url":"https://eflight.com/directives/2004-01-13"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}