{"as_of":"2026-11-02","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":2,"name":"Richardson Michael J","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/richardson-michael-j"}],"relation":"is a"},{"group":"Engine","items":[{"count":55,"name":"Lycoming O-320-B2C","note":"160 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/lycoming-o-320-b2c"}],"relation":"powered by"},{"group":"Place","items":[{"count":27,"name":"Yankton, SD","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Chan Gurney Municipal","note":"YKN","unit":"","url":"https://eflight.com/airports/YKN"},{"count":2273,"name":"South Dakota","note":"","unit":"aircraft registered","url":"https://eflight.com/states/SD"}],"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/N643MD#records-check"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":21,"name":"FAA orders naming the Lycoming O-320-B2C","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-o-320-b2c#airworthiness"},{"count":171,"name":"Failure reports on the Lycoming O-320-B2C","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-o-320-b2c#airworthiness"}],"relation":"subject to"},{"group":"Live","items":[{"count":null,"name":"Where N643MD is now","note":"","unit":"","url":"https://eflight.com/live?q=N643MD"}],"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":"N643MD","maker":"Richardson Michael J","model":"WITTMAN TAILWIND W10","name":"Richardson Michael J WITTMAN TAILWIND W10 N643MD","state":"SD","type":"aircraft","url":"https://eflight.com/aircraft/N643MD","year_built":2021},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}