{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":37,"name":"Pratt & Whitney PW1519G","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-pw1519g#airworthiness"},{"count":103,"name":"Pratt & Whitney PW1521G SERIE","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-pw1521g-serie#airworthiness"},{"count":58,"name":"Pratt & Whitney PW1524G SERIE","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-pw1524g-serie#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":"2021-10-27","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/7F00A5D788E3E8B786258758005D6ED1.0001","id":"2021-20-01","kind":"AD","name":"Airworthiness directive 2021-20-01","published":"2021-09-22","subject":"Turbine Section","system":"engine","type":"directive","url":"https://eflight.com/directives/2021-20-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}