{"as_of":"2026-10-29","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"System","items":[{"count":null,"name":"Rotorcraft systems","note":"","unit":"","url":"https://eflight.com/systems/rotorcraft"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2005-04-09","note":"","unit":"","url":"https://eflight.com/directives/2005-04-09"}],"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":"2005-01-18","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0C6557BDB4C04CAC86256F7E00585084.0001","id":"2004-26-11","kind":"AD","name":"Airworthiness directive 2004-26-11","published":"2005-01-03","subject":"Tail Rotor Blades","system":"rotorcraft","type":"directive","url":"https://eflight.com/directives/2004-26-11"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}