{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":119,"name":"Embraer EMB-135 ERJ 135 and Legacy","note":"","unit":"registered","url":"https://eflight.com/models/embraer/emb-135#airworthiness"},{"count":313,"name":"Embraer EMB-145 ERJ 145","note":"","unit":"registered","url":"https://eflight.com/models/embraer/emb-145#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"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":"2005-12-27","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/776041117D6FEAD3862570C00055E5EC.0001","id":"2005-23-20","kind":"AD","name":"Airworthiness directive 2005-23-20","published":"2005-11-21","subject":"Auxiliary power unit (APU)","system":"engine","type":"directive","url":"https://eflight.com/directives/2005-23-20"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}