{"as_of":"2026-10-26","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":5,"name":"Cameron Balloons ZL-77","note":"","unit":"registered","url":"https://eflight.com/models/cameron-balloons/zl-77"},{"count":208,"name":"Cameron Balloons","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/cameron-balloons"},{"count":null,"name":"Built of fabric and wicker","note":"as the model family is built; the register does not record it per aircraft","unit":"","url":"https://eflight.com/materials/balloon"}],"relation":"is a"},{"group":"Place","items":[{"count":6,"name":"Alden, MI","note":"","unit":"aircraft registered in this town","url":""},{"count":7221,"name":"Michigan","note":"","unit":"aircraft registered","url":"https://eflight.com/states/MI"}],"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/N77UD#records-check"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":1,"name":"FAA orders naming the Cameron Balloons ZL-77","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/cameron-balloons/zl-77#airworthiness"},{"count":1,"name":"Approved modifications for the Cameron Balloons ZL-77","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/cameron-balloons/zl-77#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accident history of the Cameron Balloons ZL-77","note":"","unit":"","url":"https://eflight.com/models/cameron-balloons/zl-77#accidents"},{"count":null,"name":"Accidents by model, with rates per thousand registered","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"compared in"},{"group":"Live","items":[{"count":null,"name":"Where N77UD is now","note":"","unit":"","url":"https://eflight.com/live?q=N77UD"}],"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":{"inherited_from_model":true,"material":"balloon","name":"fabric and wicker","note":null},"id":"N77UD","maker":"Cameron Balloons","model":"ZL-77","name":"Cameron Balloons ZL-77 N77UD","state":"MI","type":"aircraft","url":"https://eflight.com/aircraft/N77UD","year_built":2021},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}