{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":192,"name":"Boeing 747","note":"","unit":"registered","url":"https://eflight.com/models/boeing/747#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Flight controls","note":"","unit":"","url":"https://eflight.com/systems/flight-controls"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2008-22-17","note":"","unit":"","url":"https://eflight.com/directives/2008-22-17"}],"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":"1990-09-21","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/FFBFE173E31795E38625695F00701F8E.0001","id":"90-17-19","kind":"AD","name":"Airworthiness directive 90-17-19","published":"","subject":"Flaps Carriage Spindles","system":"flight-controls","type":"directive","url":"https://eflight.com/directives/90-17-19"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}