{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":2,"name":"Aeronca 7 Champion (Champ)","note":"","unit":"with this engine series","url":"https://eflight.com/models/aeronca/7"},{"count":2,"name":"Champion 7 Citabria and Champ","note":"","unit":"with this engine series","url":"https://eflight.com/models/champion/7"},{"count":1,"name":"Grumman American Avn. Corp. AA-1 Yankee and Trainer","note":"","unit":"with this engine series","url":"https://eflight.com/models/grumman-american-avn-corp/aa-1"}],"relation":"powers"},{"group":"Where they are","items":[{"count":2,"name":"Minnesota","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MN"},{"count":1,"name":"West Virginia","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WV"},{"count":1,"name":"Oregon","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OR"},{"count":1,"name":"Illinois","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IL"},{"count":1,"name":"Alaska","note":"","unit":"of these aircraft","url":"https://eflight.com/states/AK"}],"relation":"registered in"},{"group":"Airworthiness","items":[{"count":7,"name":"FAA orders naming the Lycoming O-290-D2B","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-o-290-d2b#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":6,"horsepower":140,"id":"lycoming-o-290-d2b","maker":"Lycoming","name":"Lycoming O-290-D2B","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/lycoming-o-290-d2b"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}