{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Flies","items":[{"count":10,"name":"Learjet 45","note":"","unit":"on the certificate","url":"https://eflight.com/models/learjet/45"},{"count":5,"name":"Bombardier BD-100 Challenger 300 and 350","note":"","unit":"on the certificate","url":"https://eflight.com/models/bombardier/bd-100"},{"count":3,"name":"Bombardier CL-600 Challenger and CRJ","note":"","unit":"on the certificate","url":"https://eflight.com/models/bombardier/cl-600"},{"count":2,"name":"Cessna 525 CitationJet (CJ series)","note":"","unit":"on the certificate","url":"https://eflight.com/models/cessna/525"},{"count":2,"name":"Cessna 560 Citation V, Ultra, Encore and Excel","note":"","unit":"on the certificate","url":"https://eflight.com/models/cessna/560"},{"count":10,"name":"Learjet Inc","note":"","unit":"on the certificate","url":"https://eflight.com/makers/learjet-inc"},{"count":8,"name":"Bombardier Inc","note":"","unit":"on the certificate","url":"https://eflight.com/makers/bombardier-inc"},{"count":6,"name":"Cessna","note":"","unit":"on the certificate","url":"https://eflight.com/makers/cessna"}],"relation":"flies"},{"group":"Where","items":[{"count":null,"name":"Grand Rapids, MI","note":"where it registers its own aircraft","unit":"","url":""},{"count":null,"name":"Gerald R Ford International","note":"GRR","unit":"","url":"https://eflight.com/airports/GRR"},{"count":7213,"name":"Michigan","note":"","unit":"aircraft registered","url":"https://eflight.com/states/MI"}],"relation":"based in"},{"group":"Certificates and records","items":[{"count":32,"name":"FAA charter and air-taxi certificate","note":"designator T6FA","unit":"aircraft listed","url":""},{"count":null,"name":"Callsign Nortax (NTX)","note":"on the live map","unit":"","url":"https://eflight.com/live?q=NTX"}],"relation":"holds"},{"group":"Aircraft","items":[{"count":null,"name":"N1933N","note":"Bombardier Inc BD-100-1A10","unit":"","url":"https://eflight.com/aircraft/N1933N"},{"count":null,"name":"N225DD","note":"Bombardier Inc BD-100-1A10","unit":"","url":"https://eflight.com/aircraft/N225DD"},{"count":null,"name":"N305DL","note":"Bombardier Inc BD-100-1A10","unit":"","url":"https://eflight.com/aircraft/N305DL"},{"count":null,"name":"N712BH","note":"Bombardier Inc BD-100-1A10","unit":"","url":"https://eflight.com/aircraft/N712BH"},{"count":null,"name":"N885WW","note":"Bombardier Inc BD-100-1A10","unit":"","url":"https://eflight.com/aircraft/N885WW"},{"count":null,"name":"N215RB","note":"Cessna 525A","unit":"","url":"https://eflight.com/aircraft/N215RB"},{"count":null,"name":"All 32 aircraft on the certificate","note":"","unit":"","url":"https://eflight.com/operators/northern-jet-management-inc#aircraft"}],"relation":"lists on its certificate"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft_listed":32,"base_city":"Grand Rapids","base_state":"MI","callsign":"NORTAX","certificate":"135","code":"NTX","designator":"T6FA","dot_authority":null,"id":"northern-jet-management-inc","name":"Northern Jet Management, Inc.","type":"operator","url":"https://eflight.com/operators/northern-jet-management-inc"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}