{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":325,"name":"Boeing 737","note":"","unit":"with this engine series","url":"https://eflight.com/models/boeing/737"}],"relation":"powers"},{"group":"Where they are","items":[{"count":78,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"},{"count":76,"name":"Illinois","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IL"},{"count":66,"name":"Georgia","note":"","unit":"of these aircraft","url":"https://eflight.com/states/GA"},{"count":54,"name":"Utah","note":"","unit":"of these aircraft","url":"https://eflight.com/states/UT"},{"count":47,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":78,"name":"Alaska Airlines INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/alaska-airlines-inc"},{"count":76,"name":"United Airlines INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/united-airlines-inc"},{"count":65,"name":"Delta Air Lines INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/delta-air-lines-inc"},{"count":47,"name":"Southwest Airlines CO","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/southwest-airlines-co"},{"count":43,"name":"Umb Bank Na Trustee","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/umb-bank-na-trustee"}],"relation":"owned by"},{"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":325,"horsepower":null,"id":"cfm-international-cfm56-7b27e","maker":"CFM International","name":"CFM International CFM56-7B27E","thrust_lb":27300,"type":"Turbofan","url":"https://eflight.com/engines/cfm-international-cfm56-7b27e"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}