{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":1,"name":"Nadell David Allen","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/nadell-david-allen"}],"relation":"is a"},{"group":"Engine","items":[{"count":9,"name":"Suzuki G13BB","note":"100 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/suzuki-g13bb"}],"relation":"powered by"},{"group":"Place","items":[{"count":1,"name":"Columbia Crossroad, PA","note":"","unit":"aircraft registered in this town","url":""},{"count":6188,"name":"Pennsylvania","note":"","unit":"aircraft registered","url":"https://eflight.com/states/PA"}],"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/N21DN#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N21DN is now","note":"","unit":"","url":"https://eflight.com/live?q=N21DN"}],"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":"N21DN","maker":"Nadell David Allen","model":"TRICK TRIKE STORM","name":"Nadell David Allen TRICK TRIKE STORM N21DN","state":"PA","type":"aircraft","url":"https://eflight.com/aircraft/N21DN","year_built":2011},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}