{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":2,"name":"Boeing 737","note":"","unit":"with this engine series","url":"https://eflight.com/models/boeing/737"}],"relation":"powers"},{"group":"Where they are","items":[{"count":1,"name":"Utah","note":"","unit":"of these aircraft","url":"https://eflight.com/states/UT"},{"count":1,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Southwest Airlines CO","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/southwest-airlines-co"},{"count":1,"name":"Bank Of Utah Trustee","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/bank-of-utah-trustee"}],"relation":"owned by"},{"group":"Airworthiness","items":[{"count":26,"name":"FAA orders naming the CFM International CFM56-7B20","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/cfm-international-cfm56-7b20#airworthiness"},{"count":187,"name":"Failure reports on the CFM International CFM56-7B20","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/cfm-international-cfm56-7b20#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"The fleet by engine type","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Every engine series","note":"","unit":"","url":"https://eflight.com/engines"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft":2,"horsepower":null,"id":"cfm-international-cfm56-7b20","maker":"CFM International","name":"CFM International CFM56-7B20","thrust_lb":20600,"type":"Turbofan","url":"https://eflight.com/engines/cfm-international-cfm56-7b20"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}