{"airworthiness_class":"Experimental","airworthiness_date":"1990-11-15","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"2021-09-20","city":"IRVINGTON","country_code":"US","county_code":"097","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"41508","engine_horsepower":180,"engine_maker":"LYCOMING","engine_model":"0-320 SERIES","engine_thrust_lb":0,"expiration_date":"2028-09-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2025-02-24","maker":"Barron Glenn","maker_country":null,"maker_raw":"BARRON GLENN","maker_segment":null,"mfr_mdl_code":"05608DA","mode_s_code":"52611763","mode_s_hex":"AB13F3","model":"VANS RV-4","n_number":"N81259","name":"THERMODYNAMIC SCIENCES LLC","num_engines":1,"other_names":"","plain_english":"N81259 is a Barron Glenn VANS RV-4, a fixed-wing airplane with one motor with a piston engine. It has 2 seats. It is registered to Thermodynamic Sciences LLC, an LLC in Irvington, Alabama. The registration is valid: it was issued on September 20, 2021 and expires on September 30, 2028. It holds an experimental airworthiness certificate for amateur built, dated November 15, 1990.","region":"Southern","region_code":"7","registrant_type":"LLC","registrant_type_code":"7","seats":2,"serial_number":"2034","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"AL","status":"Valid registration","status_code":"V","status_short":"Valid","street":"11264 WALKER RD","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00694521","url":"https://staging.data.eflight.com/aircraft/N81259","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"365443971"}