{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":155,"name":"Douglas DC-3","note":"","unit":"registered","url":"https://eflight.com/models/douglas/dc-3#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Heating, ice protection and utility systems","note":"","unit":"","url":"https://eflight.com/systems/utility"}],"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":"2000-03-28","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/8678205400D894CB86256A0800698CAA.0001","id":"2000-04-03","kind":"AD","name":"Airworthiness directive 2000-04-03","published":"2000-02-22","subject":"Airframe Pneumatic Deicing Boots","system":"utility","type":"directive","url":"https://eflight.com/directives/2000-04-03"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}