{"as_of":"2026-10-27","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Record","items":[{"count":1,"name":"NTSB accidents and incidents at or near this heliport","note":"0 fatal","unit":"since 1982","url":"https://eflight.com/airports/SD02#accidents"},{"count":467,"name":"Accidents and incidents in South Dakota","note":"67 in the last ten years","unit":"since 1982","url":"https://eflight.com/accidents?state=SD"}],"relation":"scene of"},{"group":"Around it","items":[{"count":8,"name":"Nearby landing places within 30 nautical miles","note":"","unit":"airports, heliports and seaplane bases","url":"https://eflight.com/airports/SD02#nearby"},{"count":70,"name":"Public-use airports in South Dakota","note":"","unit":"landing places","url":"https://eflight.com/airports?state=SD"},{"count":2273,"name":"South Dakota","note":"","unit":"aircraft registered","url":"https://eflight.com/states/SD"}],"relation":"in"},{"group":"Live","items":[{"count":null,"name":"Aircraft near this airport right now","note":"","unit":"","url":"https://eflight.com/airports/SD02#liveapt"},{"count":null,"name":"The live map, zoomed here","note":"","unit":"","url":"https://eflight.com/live?q=SD02"}],"relation":"seen at"},{"group":"Analytics","items":[{"count":null,"name":"Airports by the numbers","note":"","unit":"","url":"https://eflight.com/analytics/airports"},{"count":null,"name":"Where accidents happen, by state and airport","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-place"},{"count":null,"name":"The accident map","note":"","unit":"","url":"https://eflight.com/analytics/accident-map"}],"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":{"city":"Twin Brooks","id":"SD02","kind":"heliport","latitude":45.18305555,"longitude":-96.77777777,"name":"Mogensmark Heliport","state":"SD","type":"airport","url":"https://eflight.com/airports/SD02"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}