{"airworthiness_class":"Limited","airworthiness_date":"1961-09-08","airworthiness_ops":"","category":"conventional","cert_issue_date":"2013-04-19","city":"LA CENTER","country_code":"US","county_code":"011","cruise_speed_mph":277,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"49001","engine_horsepower":1490,"engine_maker":"PKRD-ROLL","engine_model":"V1650 SERIES","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":"North American/Aero Classics","maker_country":null,"maker_raw":"NORTH AMERICAN/AERO CLASSICS","maker_segment":null,"mfr_mdl_code":"6402304","mode_s_code":"51460071","mode_s_hex":"A66039","model":"P-51D","n_number":"N51MR","name":"KEMPF BROTHERS AVIATION PARTNERSHIP","num_engines":1,"other_names":"KEMPF THOMAS M / KEMPF RANDALL P / KEMPF DOUGLAS A","plain_english":"N51MR is a North American/Aero Classics P-51D, a fixed-wing airplane with one motor with a piston engine, built in 1944. It has 1 seat. It is registered to Kempf Brothers Aviation Partnership, a partnership in La Center, Washington. The registration is valid: it was issued on April 19, 2013 and expires on April 30, 2029. It holds a limited airworthiness certificate, dated September 8, 1961.","region":"Northwest Mountain","region_code":"S","registrant_type":"Partnership","registrant_type_code":"2","seats":1,"serial_number":"44-73163","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"WA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"4403 NE 290TH ST","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00521275","url":"https://staging.data.eflight.com/aircraft/N51MR","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1944,"zip":"986292003"}