{"as_of":"2026-11-12","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Aircraft","items":[{"count":null,"name":"N48313: not on the register today","note":"the record of its deregistration","unit":"","url":"https://eflight.com/aircraft/N48313"},{"count":217,"name":"Hiller UH-12","note":"the model family and its accident history","unit":"registered today","url":"https://eflight.com/models/hiller/uh-12"},{"count":242,"name":"Hiller","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/hiller"},{"count":6,"name":"Engine: Lycoming VO-540-C-2-A","note":"as the NTSB recorded it","unit":"aircraft carry this series today","url":"https://eflight.com/engines/lycoming-vo-540-c2a"}],"relation":"involved"},{"group":"Place","items":[{"count":1622,"name":"Accidents and incidents in Wisconsin","note":"225 in the last ten years","unit":"since 1982","url":"https://eflight.com/accidents?state=WI"},{"count":6161,"name":"Wisconsin","note":"","unit":"aircraft registered","url":"https://eflight.com/states/WI"}],"relation":"at or near"},{"group":"Record","items":[{"count":1,"name":"Other NTSB records under N48313","note":"the number may have belonged to another aircraft at the time","unit":"records","url":"https://eflight.com/accidents/CHI89DEP07#others"}],"relation":"related to"},{"group":"Analytics","items":[{"count":null,"name":"Accidents over time since 1982","note":"","unit":"","url":"https://eflight.com/analytics/accidents-over-time"},{"count":null,"name":"Accidents by phase of flight, weather and hour","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-phase"},{"count":null,"name":"The accident map","note":"","unit":"","url":"https://eflight.com/analytics/accident-map"}],"relation":"counted in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"city":"Blackriverfalls","date":"1989-07-20","fatalities":0,"id":"CHI89DEP07","name":"Hiller UH-12E accident near Blackriverfalls, Wisconsin, July 20, 1989","state":"WI","type":"ACC","url":"https://eflight.com/accidents/CHI89DEP07"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}