{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":1,"name":"Donald C Perry","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/donald-c-perry"}],"relation":"is a"},{"group":"Engine","items":[{"count":14,"name":"Curtiss OX-5","note":"90 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/curtiss-ox-5"}],"relation":"powered by"},{"group":"Owner","items":[{"count":1,"name":"Poplar Grove Aviation Education Association","note":"","unit":"aircraft registered to this organisation","url":"https://eflight.com/search?q=Poplar Grove Aviation Education Association"}],"relation":"owned by"},{"group":"Place","items":[{"count":168,"name":"Poplar Grove, IL","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Poplar Grove Airport","note":"C77","unit":"","url":"https://eflight.com/airports/C77"},{"count":8050,"name":"Illinois","note":"","unit":"aircraft registered","url":"https://eflight.com/states/IL"}],"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/N1DP#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N1DP is now","note":"","unit":"","url":"https://eflight.com/live?q=N1DP"}],"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":"N1DP","maker":"Donald C Perry","model":"CURTISS JN-4D","name":"Donald C Perry CURTISS JN-4D N1DP","state":"IL","type":"aircraft","url":"https://eflight.com/aircraft/N1DP","year_built":2021},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}