{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":1,"name":"Brian E Keiffer","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/brian-e-keiffer"}],"relation":"is a"},{"group":"Engine","items":[{"count":61,"name":"Rotax 582","note":"65 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/rotax-582"}],"relation":"powered by"},{"group":"Place","items":[{"count":50,"name":"Martinsville, IN","note":"","unit":"aircraft registered in this town","url":""},{"count":5698,"name":"Indiana","note":"","unit":"aircraft registered","url":"https://eflight.com/states/IN"}],"relation":"registered in"},{"group":"Record","items":[{"count":null,"name":"No NTSB accident or incident record under this tail number","note":"","unit":"","url":"https://eflight.com/aircraft/N506BK#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N506BK is now","note":"","unit":"","url":"https://eflight.com/live?q=N506BK"}],"relation":"seen at"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"built_of":null,"id":"N506BK","maker":"Brian E Keiffer","model":"QCKSLVR MX SPRINT II","name":"Brian E Keiffer QCKSLVR MX SPRINT II N506BK","state":"IN","type":"aircraft","url":"https://eflight.com/aircraft/N506BK","year_built":2005},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}