{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":5,"name":"CFM International CFM56-2B","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-2b#airworthiness"},{"count":1,"name":"CFM International CFM56-3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-3#airworthiness"},{"count":3,"name":"CFM International CFM56-3B","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-3b#airworthiness"},{"count":10,"name":"CFM International CFM56-3C","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-3c#airworthiness"},{"count":38,"name":"CFM International CFM56-5B2","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b2#airworthiness"},{"count":104,"name":"CFM International CFM56-5B3/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b3-3#airworthiness"},{"count":11,"name":"CFM International CFM56-5B3/P","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b3-p#airworthiness"},{"count":41,"name":"CFM International CFM56-5B4","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b4#airworthiness"},{"count":82,"name":"CFM International CFM56-5B4/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b4-3#airworthiness"},{"count":22,"name":"CFM International CFM56-5B4/P","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b4-p#airworthiness"},{"count":2,"name":"CFM International CFM56-5B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b5#airworthiness"},{"count":14,"name":"CFM International CFM56-5B5/P","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b5-p#airworthiness"},{"count":16,"name":"CFM International CFM56-5B6","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b6#airworthiness"},{"count":3,"name":"CFM International CFM56-5B6/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b6-3#airworthiness"},{"count":10,"name":"CFM International CFM56-5B6/P","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b6-p#airworthiness"},{"count":18,"name":"CFM International CFM56-5B7","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b7#airworthiness"},{"count":7,"name":"CFM International CFM56-5B7/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b7-3#airworthiness"},{"count":1,"name":"CFM International CFM56-5B7/P","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5b7-p#airworthiness"},{"count":1,"name":"CFM International CFM56-5C4/1","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-5c4-1#airworthiness"},{"count":2,"name":"CFM International CFM56-7B20","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b20#airworthiness"},{"count":35,"name":"CFM International CFM56-7B22","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b22#airworthiness"},{"count":171,"name":"CFM International CFM56-7B24","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b24#airworthiness"},{"count":113,"name":"CFM International CFM56-7B24/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b24-3#airworthiness"},{"count":151,"name":"CFM International CFM56-7B24E","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b24e#airworthiness"},{"count":64,"name":"CFM International CFM56-7B26","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b26#airworthiness"},{"count":2,"name":"CFM International CFM56-7B26/2","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b26-2#airworthiness"},{"count":57,"name":"CFM International CFM56-7B26/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b26-3#airworthiness"},{"count":1,"name":"CFM International CFM56-7B26/B1","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b26-b1#airworthiness"},{"count":47,"name":"CFM International CFM56-7B26E","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b26e#airworthiness"},{"count":47,"name":"CFM International CFM56-7B27","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27#airworthiness"},{"count":3,"name":"CFM International CFM56-7B27/3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27-3#airworthiness"},{"count":9,"name":"CFM International CFM56-7B27/B1","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27-b1#airworthiness"},{"count":23,"name":"CFM International CFM56-7B27/B3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27-b3#airworthiness"},{"count":1,"name":"CFM International CFM56-7B27A","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27a#airworthiness"},{"count":2,"name":"CFM International CFM56-7B27AE","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27ae#airworthiness"},{"count":325,"name":"CFM International CFM56-7B27E","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27e#airworthiness"},{"count":111,"name":"CFM International CFM56-7B27E/F","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27e-f#airworthiness"},{"count":6,"name":"CFM International CFM56-7B27EB3","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-7b27eb3#airworthiness"},{"count":709,"name":"CFM International CFM56 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/cfm-international-cfm56-series#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":"2009-06-23","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/47F886D26F13FB50862575BB004AC8A0.0001","id":"2009-11-02","kind":"AD","name":"Airworthiness directive 2009-11-02","published":"2012-02-24","subject":"HPC 4-9 spools","system":"engine","type":"directive","url":"https://eflight.com/directives/2009-11-02"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}