{"as_of":"2026-11-03","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":238,"name":"General Electric CF6-80 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-cf6-80-series#airworthiness"},{"count":2,"name":"General Electric CF6-80C2A1","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-cf6-80c2a1#airworthiness"},{"count":3,"name":"General Electric CF6-80C2A5","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-cf6-80c2a5#airworthiness"},{"count":6,"name":"General Electric CF6-80C2A5F","note":"","unit":"aircraft","url":"https://eflight.com/engines/general-electric-cf6-80c2a5f#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":"Replaced by 2008-02-17","note":"","unit":"","url":"https://eflight.com/directives/2008-02-17"}],"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":"1999-11-02","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/9B61878B51A30E4C8625687B00733183.0001","id":"99-18-20","kind":"AD","name":"Airworthiness directive 99-18-20","published":"1999-09-03","subject":"Inadvertent In-flight Thrust Reverser","system":"engine","type":"directive","url":"https://eflight.com/directives/99-18-20"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}