{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":11,"name":"Rockwell International S-2","note":"","unit":"with this engine series","url":"https://eflight.com/models/rockwell-international/s-2"},{"count":7,"name":"North American T-28","note":"","unit":"with this engine series","url":"https://eflight.com/models/north-american/t-28"},{"count":4,"name":"Sikorsky S-55","note":"","unit":"with this engine series","url":"https://eflight.com/models/sikorsky/s-55"},{"count":1,"name":"Grumman TBM-3","note":"","unit":"with this engine series","url":"https://eflight.com/models/grumman/tbm-3"}],"relation":"powers"},{"group":"Where they are","items":[{"count":4,"name":"Kentucky","note":"","unit":"of these aircraft","url":"https://eflight.com/states/KY"},{"count":3,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":3,"name":"Ohio","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OH"},{"count":2,"name":"Nevada","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NV"},{"count":2,"name":"Mississippi","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MS"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":4,"name":"Sierra Aeronautics LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/sierra-aeronautics-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":25,"horsepower":800,"id":"wright-c7ba-series","maker":"Wright","name":"Wright C7BA series","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/wright-c7ba-series"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}