{"as_of":"2026-11-11","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Aircraft","items":[{"count":null,"name":"N4106K on the register today","note":"the tail number may have moved to another aircraft since","unit":"","url":"https://eflight.com/aircraft/N4106K"},{"count":99,"name":"Navion NAVION A","note":"the model family and its accident history","unit":"registered today","url":"https://eflight.com/models/navion/navion-a"},{"count":254,"name":"Navion","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/navion"},{"count":9482,"name":"Engine: Continental Motors IO-520-BB3B","note":"as the NTSB recorded it","unit":"aircraft carry this series today","url":"https://eflight.com/engines/continental-io-520-series"}],"relation":"involved"},{"group":"Place","items":[{"count":null,"name":"Livermore Municipal","note":"nearest airport","unit":"","url":"https://eflight.com/airports/LVK"},{"count":9080,"name":"Accidents and incidents in California","note":"1,096 in the last ten years","unit":"since 1982","url":"https://eflight.com/accidents?state=CA"},{"count":28158,"name":"California","note":"","unit":"aircraft registered","url":"https://eflight.com/states/CA"}],"relation":"at or near"},{"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":"Livermore","date":"2020-12-21","fatalities":0,"id":"WPR21LA072","name":"Navion Navion A accident near Livermore, California, December 21, 2020","state":"CA","type":"ACC","url":"https://eflight.com/accidents/WPR21LA072"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}