{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":20,"name":"Turbomeca (Safran) ARRIEL 2B","note":"","unit":"aircraft","url":"https://eflight.com/engines/turbomeca-safran-arriel-2b#airworthiness"},{"count":271,"name":"Turbomeca (Safran) ARRIEL 2B1","note":"","unit":"aircraft","url":"https://eflight.com/engines/turbomeca-safran-arriel-2b1#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 2010-03-06","note":"","unit":"","url":"https://eflight.com/directives/2010-03-06"},{"count":null,"name":"Replaced by 2018-12-01","note":"","unit":"","url":"https://eflight.com/directives/2018-12-01"}],"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":"2012-03-20","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/E1C676C741ED58D1862579A4004E6BF4.0001","id":"2012-03-11","kind":"AD","name":"Airworthiness directive 2012-03-11","published":"2012-02-14","subject":"High-pressure/low-pressure (HP/LP) pump hydro-mechanical metering units  \n (HMUs)","system":"engine","type":"directive","url":"https://eflight.com/directives/2012-03-11"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}