{"airworthiness_class":"Standard","airworthiness_date":"1977-07-29","airworthiness_ops":"Normal","category":"conventional","cert_issue_date":"2007-01-09","city":"GREENFIELD","country_code":"US","county_code":"001","cruise_speed_mph":76,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"64503","engine_horsepower":90,"engine_maker":"WARNER","engine_model":"SS40&50","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":"Sioux","maker_country":null,"maker_raw":"SIOUX","maker_segment":null,"mfr_mdl_code":"8250106","mode_s_code":"50020555","mode_s_hex":"A0216D","model":"COUPE 90-B","n_number":"N10721","name":"ANTIQUE PRESERVATION ASSOCIATION OF GREENFIELD","num_engines":1,"other_names":"","plain_english":"N10721 is a Sioux COUPE 90-B, a fixed-wing airplane with one motor with a piston engine, built in 1933. It has 2 seats. It is registered to Antique Preservation Association Of Greenfield, a corporation in Greenfield, Iowa. The registration is valid: it was issued on January 9, 2007 and expires on April 30, 2029. It holds a standard airworthiness certificate for normal, dated July 29, 1977.","region":"Central","region_code":"3","registrant_type":"Corporation","registrant_type_code":"3","seats":2,"serial_number":"401","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"IA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"PO BOX 31","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00540540","url":"https://staging.data.eflight.com/aircraft/N10721","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1933,"zip":"508490031"}