{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":2,"name":"Rolls-Royce TAY 651-54","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-tay-651-54#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"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":"2013-12-30","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/920A6663F03F4C3486257C2E0052C39D.0001","id":"2013-23-01","kind":"AD","name":"Airworthiness directive 2013-23-01","published":"2013-11-25","subject":"High-pressure (HP) air bleed valve","system":"engine","type":"directive","url":"https://eflight.com/directives/2013-23-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}