{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":24,"name":"As+ Ltd","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/as-ltd"},{"count":23,"name":"As+ Ltd AC 4","note":"","unit":"registered","url":"https://eflight.com/models/as-ltd/ac-4?variant=AC 4"},{"count":1,"name":"As+ Ltd AC-4M","note":"","unit":"registered","url":"https://eflight.com/models/as-ltd/ac-4?variant=AC-4M"},{"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":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":3,"name":"Illinois","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IL"},{"count":3,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"},{"count":2,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"},{"count":2,"name":"Tennessee","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TN"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Park Forest South Aviation Group","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Park Forest South Aviation Group"},{"count":1,"name":"Loensloe Aviation INC","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Loensloe Aviation INC"},{"count":1,"name":"Huntsville Soaring Association","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Huntsville Soaring Association"}],"relation":"owned by"},{"group":"Record","items":[{"count":1,"name":"NTSB accidents and incidents involving the AC-4","note":"1 fatal","unit":"cases since 1982","url":"https://eflight.com/models/as-ltd/ac-4#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":"as-ltd/ac-4","name":"As+ Ltd AC-4","registered":24,"type":"model","url":"https://eflight.com/models/as-ltd/ac-4","versions":2},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}
