{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":67,"name":"Learjet 55","note":"","unit":"registered","url":"https://eflight.com/models/learjet/55"},{"count":63,"name":"Gates Learjet Corp","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/gates-learjet-corp"},{"count":null,"name":"Built of aluminium","note":"as the model family is built; the register does not record it per aircraft","unit":"","url":"https://eflight.com/materials/aluminium"}],"relation":"is a"},{"group":"Engine","items":[{"count":694,"name":"Garrett (Honeywell) TFE731 series","note":"3,500 lb thrust","unit":"aircraft with this engine series","url":"https://eflight.com/engines/garrett-honeywell-tfe731-series"}],"relation":"powered by"},{"group":"Owner","items":[{"count":52,"name":"Royal Air Freight INC","note":"","unit":"aircraft in the fleet","url":"https://eflight.com/fleets/royal-air-freight-inc"}],"relation":"owned by"},{"group":"Place","items":[{"count":167,"name":"Waterford, MI","note":"","unit":"aircraft registered in this town","url":""},{"count":7217,"name":"Michigan","note":"","unit":"aircraft registered","url":"https://eflight.com/states/MI"}],"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/N285DH#records-check"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":21,"name":"FAA orders naming the Learjet 55","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/learjet/55#airworthiness"},{"count":216,"name":"Failure reports filed on the Learjet 55","note":"","unit":"reports since 1995","url":"https://eflight.com/models/learjet/55#airworthiness"},{"count":65,"name":"Approved modifications for the Learjet 55","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/learjet/55#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accident history of the Learjet 55","note":"","unit":"","url":"https://eflight.com/models/learjet/55#accidents"},{"count":null,"name":"Accidents by model, with rates per thousand registered","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"compared in"},{"group":"Live","items":[{"count":null,"name":"Where N285DH is now","note":"","unit":"","url":"https://eflight.com/live?q=N285DH"}],"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":{"inherited_from_model":true,"material":"aluminium","name":"aluminium","note":null},"id":"N285DH","maker":"Gates Learjet Corp","model":"55","name":"Gates Learjet Corp 55 N285DH","state":"MI","type":"aircraft","url":"https://eflight.com/aircraft/N285DH","year_built":1982},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}