{"airworthiness_class":"Standard","airworthiness_date":"","airworthiness_ops":"","category":"conventional","cert_issue_date":"1979-02-12","city":"LITTLETON","country_code":"US","county_code":"005","cruise_speed_mph":63,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"00000","engine_horsepower":0,"engine_maker":"NONE","engine_model":"NONE","engine_thrust_lb":0,"expiration_date":"2029-07-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-08-18","maker":"Balloon Works","maker_country":null,"maker_raw":"BALLOON WORKS","maker_segment":null,"mfr_mdl_code":"1050100","mode_s_code":"51137037","mode_s_hex":"A4BE1F","model":"FIREFLY 7","n_number":"N4042D","name":"MILE HIGH AERONAUTS INC","num_engines":0,"other_names":"","plain_english":"N4042D is a Balloon Works FIREFLY 7, a balloon with no engine, built in 1978. It has 1 seat. It is registered to Mile High Aeronauts INC, a corporation in Littleton, Colorado. The registration is valid: it was issued on February 12, 1979 and expires on July 31, 2029. It holds a standard airworthiness certificate.","region":"Northwest Mountain","region_code":"S","registrant_type":"Corporation","registrant_type_code":"3","seats":1,"serial_number":"7855","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"CO","status":"Valid registration","status_code":"V","status_short":"Valid","street":"PO BOX 3388","street2":"","type_aircraft":"Balloon","type_aircraft_code":"2","type_engine":"None","type_engine_code":"0","unique_id":"00641104","url":"https://staging.data.eflight.com/aircraft/N4042D","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1978,"zip":"80161"}