{"as_of":"2026-10-13","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":5,"name":"Turbomeca (Safran) ARRIUS 1A","note":"","unit":"aircraft","url":"https://eflight.com/engines/turbomeca-safran-arrius-1a#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":"2009-11-20","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/BAAE0B83646D946386257651004AE56E.0001","id":"2009-21-11","kind":"AD","name":"Airworthiness directive 2009-21-11","published":"2009-10-16","subject":"Cycle life limit value for ARRIUS 1A balancing piston.","system":"engine","type":"directive","url":"https://eflight.com/directives/2009-21-11"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}