{"as_of":"2026-11-10","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":2,"name":"Watson","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/watson"}],"relation":"is a"},{"group":"Engine","items":[{"count":11929,"name":"Lycoming O-360 / VO-360 series","note":"180 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/lycoming-o-360-vo-360-series"}],"relation":"powered by"},{"group":"Place","items":[{"count":26,"name":"Ennis, MT","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Ennis Big Sky Airport","note":"EKS","unit":"","url":"https://eflight.com/airports/EKS"},{"count":6045,"name":"Montana","note":"","unit":"aircraft registered","url":"https://eflight.com/states/MT"}],"relation":"registered in"},{"group":"Record","items":[{"count":null,"name":"No NTSB accident or incident record under this tail number","note":"","unit":"","url":"https://eflight.com/aircraft/N7513U#records-check"}],"relation":"involved in"},{"group":"Live","items":[{"count":null,"name":"Where N7513U is now","note":"","unit":"","url":"https://eflight.com/live?q=N7513U"}],"relation":"seen at"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"built_of":null,"id":"N7513U","maker":"Watson","model":"S-1S","name":"Watson S-1S N7513U","state":"MT","type":"aircraft","url":"https://eflight.com/aircraft/N7513U","year_built":1965},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}