{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":1,"name":"Bienenstein-Schreder","note":"","unit":"aircraft on the register","url":""}],"relation":"is a"},{"group":"Place","items":[{"count":289,"name":"Spokane, WA","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Felts Field","note":"SFF","unit":"","url":"https://eflight.com/airports/SFF"},{"count":null,"name":"Spokane International","note":"GEG","unit":"","url":"https://eflight.com/airports/GEG"},{"count":10644,"name":"Washington","note":"","unit":"aircraft registered","url":"https://eflight.com/states/WA"}],"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/N9821#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N9821 is now","note":"","unit":"","url":"https://eflight.com/live?q=N9821"}],"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":"N9821","maker":"Bienenstein-Schreder","model":"HP-11A","name":"Bienenstein-Schreder HP-11A N9821","state":"WA","type":"aircraft","url":"https://eflight.com/aircraft/N9821","year_built":1969},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}