{"airworthiness_class":"Standard","airworthiness_date":"2006-12-13","airworthiness_ops":"Normal","category":"conventional","cert_issue_date":"2012-07-25","city":"DULUTH","country_code":"US","county_code":"137","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"42353","engine_horsepower":260,"engine_maker":"LYCOMING","engine_model":"O-540-F1B5","engine_thrust_lb":0,"expiration_date":"2028-07-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-05-26","maker":"Robinson Helicopter","maker_country":"US","maker_raw":"ROBINSON HELICOPTER","maker_segment":"Helicopter","mfr_mdl_code":"7640120","mode_s_code":"51413140","mode_s_hex":"A61660","model":"R44","n_number":"N4911X","name":"LAKE SUPERIOR HELICOPTERS LLC","num_engines":1,"other_names":"","plain_english":"N4911X is a Robinson Helicopter R44, a rotorcraft with a piston engine (a helicopter or multicopter), built in 2006. It has 4 seats. It is registered to Lake Superior Helicopters LLC, an LLC in Duluth, Minnesota. The registration is valid: it was issued on July 25, 2012 and expires on July 31, 2028. It holds a standard airworthiness certificate for normal, dated December 13, 2006.","region":"Great Lakes","region_code":"C","registrant_type":"LLC","registrant_type_code":"7","seats":4,"serial_number":"1675","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"MN","status":"Valid registration","status_code":"V","status_short":"Valid","street":"PO BOX 15035","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00291309","url":"https://staging.data.eflight.com/aircraft/N4911X","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2006,"zip":"558150035"}