{"as_of":"2026-10-26","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":7,"name":"Great Lakes 2","note":"","unit":"with this engine series","url":"https://eflight.com/models/great-lakes/2"}],"relation":"powers"},{"group":"Where they are","items":[{"count":1,"name":"Wisconsin","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WI"},{"count":1,"name":"Tennessee","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TN"},{"count":1,"name":"New Jersey","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NJ"},{"count":1,"name":"Indiana","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IN"},{"count":1,"name":"Iowa","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IA"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Great Lakes Aircraft LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/great-lakes-aircraft-llc"}],"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":7,"horsepower":100,"id":"a-c-e-upri-mark-iii","maker":"A.C.E.","name":"A.C.E. UPRI MARK III","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/a-c-e-upri-mark-iii"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}