{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":1,"name":"Rolls-Royce DART 510&511","note":"","unit":"aircraft","url":"https://eflight.com/engines/rolls-royce-dart-510-511#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":"1986-11-04","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/40FF0F3EC78A901686256862005B4667.0001","id":"86-20-10","kind":"AD","name":"Airworthiness directive 86-20-10","published":"","subject":"High Pressure Turbine Disks","system":"engine","type":"directive","url":"https://eflight.com/directives/86-20-10"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}