{"airworthiness_class":"Experimental","airworthiness_date":"2018-08-02","airworthiness_ops":"Unmanned aircraft, research and development","category":"conventional","cert_issue_date":"2018-06-19","city":"SILVER SPRING","country_code":"US","county_code":"031","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"99999","engine_horsepower":0,"engine_maker":"AMA/EXPR","engine_model":"UNKNOWN ENG","engine_thrust_lb":0,"expiration_date":"2028-06-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":1,"kit_mfr":"","kit_model":"","last_action_date":"2025-08-06","maker":"Robinson Helicopter","maker_country":"US","maker_raw":"ROBINSON HELICOPTER COMPANY","maker_segment":"Helicopter","mfr_mdl_code":"7640122","mode_s_code":"51373577","mode_s_hex":"A5F77F","model":"R44 II","n_number":"N484AK","name":"UNITED THERAPEUTICS CORP","num_engines":1,"other_names":"","plain_english":"N484AK is a Robinson Helicopter R44 II, a rotorcraft with a piston engine (a helicopter or multicopter), built in 2007. It has 4 seats. It is registered to United Therapeutics CORP, a corporation in Silver Spring, Maryland. The registration is valid: it was issued on June 19, 2018 and expires on June 30, 2028. It holds an experimental airworthiness certificate for unmanned aircraft, research and development, dated August 2, 2018.","region":"Eastern","region_code":"1","registrant_type":"Corporation","registrant_type_code":"3","seats":4,"serial_number":"11638","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"MD","status":"Valid registration","status_code":"V","status_short":"Valid","street":"1110 SPRING ST","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"01270648","url":"https://staging.data.eflight.com/aircraft/N484AK","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2007,"zip":"209104019"}