{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Where","items":[{"count":null,"name":"Caroline, WI","note":"the town on the certificate","unit":"","url":""},{"count":6160,"name":"Wisconsin","note":"","unit":"aircraft registered","url":"https://eflight.com/states/WI"},{"count":5,"name":"Aircraft registered in Caroline","note":"","unit":"registered","url":"https://eflight.com/aircraft?city=Caroline&state=WI"}],"relation":"works in"},{"group":"Certificate","items":[{"count":null,"name":"FAA repair station certificate (Part 145)","note":"13PR698Y","unit":"","url":""}],"relation":"holds"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"certificate":"13PR698Y","city":"Caroline","country":"United States","id":"frank-kostlevy","name":"Frank Kostlevy","state":"WI","type":"repair-station","url":"https://eflight.com/repair-stations/frank-kostlevy"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}