{"as_of":"2026-10-29","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":45,"name":"Moravan","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/moravan"}],"relation":"is a"},{"group":"Engine","items":[{"count":3,"name":"Hirth HM 504","note":"100 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/hirth-hm-504"}],"relation":"powered by"},{"group":"Place","items":[{"count":153,"name":"Polk City, FL","note":"","unit":"aircraft registered in this town","url":""},{"count":21709,"name":"Florida","note":"","unit":"aircraft registered","url":"https://eflight.com/states/FL"}],"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/N181BU#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N181BU is now","note":"","unit":"","url":"https://eflight.com/live?q=N181BU"}],"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":"N181BU","maker":"Moravan","model":"ZLIN 381","name":"Moravan ZLIN 381 N181BU","state":"FL","type":"aircraft","url":"https://eflight.com/aircraft/N181BU","year_built":null},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}