{"as_of":"2026-10-27","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":168,"name":"Great Lakes","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/great-lakes"},{"count":115,"name":"Great Lakes 2T-1A-2","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1A-2"},{"count":35,"name":"Great Lakes 2T-1A","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1A"},{"count":6,"name":"Great Lakes 2T-1","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1"},{"count":6,"name":"Great Lakes 2T-1A-1","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1A-1"},{"count":2,"name":"Great Lakes 2T-1(MENASCO SPECIAL","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1(MENASCO SPECIAL"},{"count":2,"name":"Great Lakes 2T-1A-E","note":"","unit":"registered","url":"https://eflight.com/models/great-lakes/2?variant=2T-1A-E"},{"count":null,"name":"1 more versions","note":"","unit":"","url":"https://eflight.com/models/great-lakes/2#versions"},{"count":null,"name":"Built of steel tube, wood and fabric","note":"","unit":"","url":"https://eflight.com/materials/steel-wood-fabric"}],"relation":"made by"},{"group":"Engines","items":[{"count":84,"name":"Lycoming AEIO-360 series","note":"180 hp","unit":"of these aircraft","url":"https://eflight.com/engines/lycoming-aeio-360-series"},{"count":22,"name":"Lycoming IO-360 series","note":"180 hp","unit":"of these aircraft","url":"https://eflight.com/engines/lycoming-io-360-series"},{"count":7,"name":"Lycoming O-320 series","note":"180 hp","unit":"of these aircraft","url":"https://eflight.com/engines/lycoming-o-320-series"},{"count":7,"name":"A.C.E. UPRI MARK III","note":"100 hp","unit":"of these aircraft","url":"https://eflight.com/engines/a-c-e-upri-mark-iii"},{"count":6,"name":"Warner SS165 series","note":"175 hp","unit":"of these aircraft","url":"https://eflight.com/engines/warner-ss165-series"}],"relation":"powered by"},{"group":"Where they are","items":[{"count":23,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"},{"count":16,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":11,"name":"Colorado","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CO"},{"count":8,"name":"Florida","note":"","unit":"of these aircraft","url":"https://eflight.com/states/FL"},{"count":7,"name":"Wisconsin","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WI"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":6,"name":"Great Lakes Aircraft LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/great-lakes-aircraft-llc"},{"count":3,"name":"Chandler Air Service INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/chandler-air-service-inc"},{"count":3,"name":"Associated Aircraft LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Associated Aircraft LLC"},{"count":2,"name":"Sdl Enterprises LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Sdl Enterprises LLC"},{"count":1,"name":"Western Antique Aeroplane & Automobile Museum","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/western-antique-aeroplane-automobile-museum"}],"relation":"owned by"},{"group":"Record","items":[{"count":55,"name":"NTSB accidents and incidents involving the 2","note":"7 fatal","unit":"cases since 1982","url":"https://eflight.com/models/great-lakes/2#accidents"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":7,"name":"FAA orders naming the 2","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/great-lakes/2#airworthiness"},{"count":1,"name":"Failure reports filed on the 2","note":"","unit":"reports since 1995","url":"https://eflight.com/models/great-lakes/2#airworthiness"},{"count":63,"name":"Approved modifications for the 2","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/great-lakes/2#airworthiness"}],"relation":"subject to"},{"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":"steel-wood-fabric","name":"steel tube, wood and fabric","note":null},"id":"great-lakes/2","name":"Great Lakes 2","registered":168,"type":"model","url":"https://eflight.com/models/great-lakes/2","versions":7},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}