{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":5,"name":"Helicopter Transport Services CH-54","note":"","unit":"registered","url":"https://eflight.com/models/helicopter-transport-services/ch-54#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Airframe structure","note":"","unit":"","url":"https://eflight.com/systems/structure"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2000-18-14","note":"","unit":"","url":"https://eflight.com/directives/2000-18-14"}],"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":"1999-05-06","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/386AF79EC382970386256A4D004DE679.0001","id":"99-07-16","kind":"AD","name":"Airworthiness directive 99-07-16","published":"","subject":"Second Stage Lower Planetary Plate","system":"structure","type":"directive","url":"https://eflight.com/directives/99-07-16"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}