{"as_of":"2026-10-26","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":3,"name":"Boeing B-17","note":"","unit":"with this engine series","url":"https://eflight.com/models/boeing/b-17"}],"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":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":1,"name":"Oregon","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OR"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Experimental Aircraft Association INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/experimental-aircraft-association-inc"}],"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":3,"horsepower":1200,"id":"wright-r-1820-97","maker":"Wright","name":"Wright R-1820-97","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/wright-r-1820-97"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}