{"airworthiness_class":"Experimental","airworthiness_date":"2008-05-23","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"2021-05-05","city":"MOUNTAIN GREEN","country_code":"US","county_code":"029","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"17144","engine_horsepower":210,"engine_maker":"CONT MOTOR","engine_model":"IO-360-A","engine_thrust_lb":0,"expiration_date":"2028-05-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-05-12","maker":"Ramsdell Willis","maker_country":null,"maker_raw":"RAMSDELL WILLIS","maker_segment":null,"mfr_mdl_code":"05617R4","mode_s_code":"53077047","mode_s_hex":"AC7E27","model":"RV4","n_number":"N904BF","name":"GRANDBEAR AIR LLC","num_engines":1,"other_names":"","plain_english":"N904BF is a Ramsdell Willis RV4, a fixed-wing airplane with one motor with a piston engine. It has 2 seats. It is registered to Grandbear Air LLC, an LLC in Mountain Green, Utah. The registration is valid: it was issued on May 5, 2021 and expires on May 31, 2028. It holds an experimental airworthiness certificate for amateur built, dated May 23, 2008.","region":"Northwest Mountain","region_code":"S","registrant_type":"LLC","registrant_type_code":"7","seats":2,"serial_number":"3630","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"UT","status":"Valid registration","status_code":"V","status_short":"Valid","street":"3662 QUAIL POINT RD","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00110229","url":"https://staging.data.eflight.com/aircraft/N904BF","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"840509349"}