{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":5,"name":"Honda Aircraft Company Llc HA-420","note":"","unit":"registered","url":"https://eflight.com/models/honda-aircraft-company-llc/ha-420#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":"Replaces 2018-11-05","note":"","unit":"","url":"https://eflight.com/directives/2018-11-05"}],"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":"2018-11-27","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0945113F574B47908625832F00532A41.0001","id":"2018-21-13","kind":"AD","name":"Airworthiness directive 2018-21-13","published":"2018-10-23","subject":"Landing Gear","system":"engine","type":"directive","url":"https://eflight.com/directives/2018-21-13"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}