{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":12,"name":"Blue Heron","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/blue-heron"},{"count":8,"name":"Blue Heron MARATHON","note":"","unit":"registered","url":"https://eflight.com/models/blue-heron/marathon?variant=MARATHON"},{"count":null,"name":"Built of fabric wing and steel frame","note":"","unit":"","url":"https://eflight.com/materials/parachute"}],"relation":"made by"},{"group":"Engines","items":[{"count":3,"name":"Rotax 582 series","note":"65 hp","unit":"of these aircraft","url":"https://eflight.com/engines/rotax-582-series"},{"count":2,"name":"Rotax 582DCDI","note":"65 hp","unit":"of these aircraft","url":"https://eflight.com/engines/rotax-582dcdi"},{"count":2,"name":"Rotax 582DCDI-99","note":"65 hp","unit":"of these aircraft","url":"https://eflight.com/engines/rotax-582dcdi-99"},{"count":1,"name":"Rotax 582E","note":"65 hp","unit":"of these aircraft","url":"https://eflight.com/engines/rotax-582e"}],"relation":"powered by"},{"group":"Where they are","items":[{"count":3,"name":"New York","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NY"},{"count":2,"name":"Indiana","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IN"},{"count":1,"name":"Pennsylvania","note":"","unit":"of these aircraft","url":"https://eflight.com/states/PA"},{"count":1,"name":"New Hampshire","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NH"},{"count":1,"name":"Maine","note":"","unit":"of these aircraft","url":"https://eflight.com/states/ME"}],"relation":"registered in"},{"group":"Record","items":[{"count":0,"name":"NTSB accidents and incidents involving the MARATHON","note":"0 fatal","unit":"cases since 1982","url":"https://eflight.com/models/blue-heron/marathon#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":"parachute","name":"fabric wing and steel frame","note":null},"id":"blue-heron/marathon","name":"Blue Heron MARATHON","registered":8,"type":"model","url":"https://eflight.com/models/blue-heron/marathon","versions":1},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}