{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":1,"name":"Raymond T Sievers","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/raymond-t-sievers"}],"relation":"is a"},{"group":"Engine","items":[{"count":100,"name":"Lycoming O-320-E2A","note":"150 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/lycoming-o-320-e2a"}],"relation":"powered by"},{"group":"Place","items":[{"count":78,"name":"Kenosha, WI","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Kenosha Regional","note":"ENW","unit":"","url":"https://eflight.com/airports/ENW"},{"count":6162,"name":"Wisconsin","note":"","unit":"aircraft registered","url":"https://eflight.com/states/WI"}],"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/N7977#records-check"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":21,"name":"FAA orders naming the Lycoming O-320-E2A","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-o-320-e2a#airworthiness"},{"count":83,"name":"Failure reports on the Lycoming O-320-E2A","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-o-320-e2a#airworthiness"}],"relation":"subject to"},{"group":"Live","items":[{"count":null,"name":"Where N7977 is now","note":"","unit":"","url":"https://eflight.com/live?q=N7977"}],"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":"N7977","maker":"Raymond T Sievers","model":"RV-9","name":"Raymond T Sievers RV-9 N7977","state":"WI","type":"aircraft","url":"https://eflight.com/aircraft/N7977","year_built":2007},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}
