{"airworthiness_class":"Experimental","airworthiness_date":"2003-03-12","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"2021-08-19","city":"LOVELAND","country_code":"US","county_code":"069","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"41597","engine_horsepower":180,"engine_maker":"LYCOMING","engine_model":"IO-360-L2A","engine_thrust_lb":0,"expiration_date":"2028-08-31","fractional_owner":0,"is_company":0,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"VANS AIRCRAFT INC","kit_model":"RV-4","last_action_date":"2023-06-03","maker":"Kurtz Garold","maker_country":null,"maker_raw":"KURTZ GAROLD","maker_segment":null,"mfr_mdl_code":"0561489","mode_s_code":"50054011","mode_s_hex":"A05809","model":"RV4","n_number":"N121GK","name":"BOOK THOMAS D","num_engines":1,"other_names":"","plain_english":"N121GK is a Kurtz Garold RV4, a fixed-wing airplane with one motor with a piston engine, built in 2003. It has 2 seats. It is registered to an individual in Loveland, Colorado. The registration is valid: it was issued on August 19, 2021 and expires on August 31, 2028. It holds an experimental airworthiness certificate for amateur built, dated March 12, 2003.","region":"Northwest Mountain","region_code":"S","registrant_type":"Individual","registrant_type_code":"1","seats":2,"serial_number":"2767","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"CO","status":"Valid registration","status_code":"V","status_short":"Valid","street":"2908 PRONGHORN CT","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00031659","url":"https://staging.data.eflight.com/aircraft/N121GK","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2003,"zip":"805379068"}