{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":5,"name":"Harmening High Flyer","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/harmening-high-flyer"}],"relation":"is a"},{"group":"Engine","items":[{"count":561,"name":"Rotax 503 DCDI","note":"52 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/rotax-503-dcdi"}],"relation":"powered by"},{"group":"Place","items":[{"count":7,"name":"Rockland, ME","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Knox County Regional","note":"RKD","unit":"","url":"https://eflight.com/airports/RKD"},{"count":1425,"name":"Maine","note":"","unit":"aircraft registered","url":"https://eflight.com/states/ME"}],"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/N4750#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N4750 is now","note":"","unit":"","url":"https://eflight.com/live?q=N4750"}],"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":"N4750","maker":"Harmening High Flyer","model":"503 DELUXE","name":"Harmening High Flyer 503 DELUXE N4750","state":"ME","type":"aircraft","url":"https://eflight.com/aircraft/N4750","year_built":2002},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}