{"as_of":"2026-11-02","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":71,"name":"Airbus Helicopters EC120","note":"","unit":"registered","url":"https://eflight.com/models/airbus-helicopters/ec120#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2016-12-13","note":"","unit":"","url":"https://eflight.com/directives/2016-12-13"}],"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":"2001-03-20","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/B6C55A7630E7713686256A4700459B7C.0001","id":"2001-04-12","kind":"AD","name":"Airworthiness directive 2001-04-12","published":"2001-03-05","subject":"Main Gearbox Coupling Tube Assembly","system":"engine","type":"directive","url":"https://eflight.com/directives/2001-04-12"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}