{"airworthiness_class":"","airworthiness_date":"","airworthiness_ops":"","category":"conventional","cert_issue_date":"1996-05-09","city":"OTSEGO","country_code":"US","county_code":"005","cruise_speed_mph":150,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"","engine_horsepower":null,"engine_maker":"","engine_model":"","engine_thrust_lb":null,"expiration_date":"2030-04-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2026-06-12","maker":"Beech","maker_country":null,"maker_raw":"BEECH","maker_segment":null,"mfr_mdl_code":"1151532","mode_s_code":"51677742","mode_s_hex":"A77FE2","model":"S35","n_number":"N5821S","name":"HATFIELD AVIATION INC","num_engines":1,"other_names":"","plain_english":"N5821S is a Beech S35, a fixed-wing airplane with one motor with a piston engine, built in 1964. It has 6 seats. It is registered to Hatfield Aviation INC, a corporation in Otsego, Michigan. The registration is valid: it was issued on May 9, 1996 and expires on April 30, 2030. No airworthiness certificate is on file, which is normal for drones and for aircraft still being built or tested.","region":"Great Lakes","region_code":"C","registrant_type":"Corporation","registrant_type_code":"3","seats":6,"serial_number":"D-7725","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"MI","status":"Valid registration","status_code":"V","status_short":"Valid","street":"123 S FAIR ST","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00176101","url":"https://staging.data.eflight.com/aircraft/N5821S","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1964,"zip":"490781117"}