{"as_of":"2026-10-28","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":191,"name":"Glasflugel","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/glasflugel"},{"count":6,"name":"Glasflugel 304CZ-17","note":"","unit":"registered","url":"https://eflight.com/models/glasflugel/304?variant=304CZ-17"},{"count":2,"name":"Glasflugel 304","note":"","unit":"registered","url":"https://eflight.com/models/glasflugel/304?variant=304"},{"count":null,"name":"Built of composite","note":"A glass-fibre glider.","unit":"","url":"https://eflight.com/materials/composite"}],"relation":"made by"},{"group":"Where they are","items":[{"count":3,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"},{"count":1,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"},{"count":1,"name":"Delaware","note":"","unit":"of these aircraft","url":"https://eflight.com/states/DE"},{"count":1,"name":"Colorado","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CO"},{"count":1,"name":"Arizona","note":"","unit":"of these aircraft","url":"https://eflight.com/states/AZ"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Zero Sink INC","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Zero Sink INC"},{"count":1,"name":"Minear Wesley J","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Minear Wesley J"}],"relation":"owned by"},{"group":"Record","items":[{"count":0,"name":"NTSB accidents and incidents involving the 304","note":"0 fatal","unit":"cases since 1982","url":"https://eflight.com/models/glasflugel/304#accidents"}],"relation":"involved in"},{"group":"Analytics","items":[{"count":null,"name":"Accidents by model, with rates per thousand registered","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"},{"count":null,"name":"The fleet by kind, state and age","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Biggest makers and model families","note":"","unit":"","url":"https://eflight.com/analytics/makers"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"built_of":{"material":"composite","name":"composite","note":"A glass-fibre glider."},"id":"glasflugel/304","name":"Glasflugel 304","registered":8,"type":"model","url":"https://eflight.com/models/glasflugel/304","versions":2},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}