{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":84,"name":"Air Tractor Inc AT-301","note":"","unit":"registered","url":"https://eflight.com/models/air-tractor-inc/at-301#airworthiness"},{"count":49,"name":"Air Tractor Inc AT-400","note":"","unit":"registered","url":"https://eflight.com/models/air-tractor-inc/at-400#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 2003-06-01","note":"","unit":"","url":"https://eflight.com/directives/2003-06-01"}],"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":"2008-05-08","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0637D9BC97CECAB18625743900516417.0001","id":"2008-09-10","kind":"AD","name":"Airworthiness directive 2008-09-10","published":"2008-04-28","subject":"Aluminum spar caps","system":"engine","type":"directive","url":"https://eflight.com/directives/2008-09-10"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}