{"airworthiness_class":"Experimental","airworthiness_date":"1980-09-09","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"1981-01-26","city":"SEATLE","country_code":"US","county_code":"033","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"31004","engine_horsepower":160,"engine_maker":"GNOME","engine_model":"ROTARY","engine_thrust_lb":0,"expiration_date":"2029-04-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-07-28","maker":"Swanson Carl R/Swanson Aero","maker_country":null,"maker_raw":"SWANSON CARL R/SWANSON AERO","maker_segment":null,"mfr_mdl_code":"0564013","mode_s_code":"51622063","mode_s_hex":"A72433","model":"NIEUPORT 27","n_number":"N5597M","name":"WINDWARD AVIATION INC","num_engines":1,"other_names":"","plain_english":"N5597M is a Swanson Carl R/Swanson Aero NIEUPORT 27, a fixed-wing airplane with one motor with a piston engine, built in 1980. It has 1 seat. It is registered to Windward Aviation INC, a corporation in Seatle, Washington. The registration is valid: it was issued on January 26, 1981 and expires on April 30, 2029. It holds an experimental airworthiness certificate for amateur built, dated September 9, 1980.","region":"Northwest Mountain","region_code":"S","registrant_type":"Corporation","registrant_type_code":"3","seats":1,"serial_number":"S-8","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"WA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"9404 E MARGINAL WAY S","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00420116","url":"https://staging.data.eflight.com/aircraft/N5597M","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1980,"zip":"981084097"}