{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":792,"name":"Airbus A320","note":"","unit":"registered","url":"https://eflight.com/models/airbus/a320#airworthiness"},{"count":936,"name":"Airbus A321","note":"","unit":"registered","url":"https://eflight.com/models/airbus/a321#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Instruments and avionics","note":"","unit":"","url":"https://eflight.com/systems/avionics"}],"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":"2019-12-11","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/2E10BCA0ECD7E4DE862584AA0056E003.0001","id":"2019-19-01","kind":"AD","name":"Airworthiness directive 2019-19-01","published":"2019-11-06","subject":"Pneumatic","system":"avionics","type":"directive","url":"https://eflight.com/directives/2019-19-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}