{"airworthiness_class":"Experimental","airworthiness_date":"2025-12-03","airworthiness_ops":"Research and development; Crew training","category":"conventional","cert_issue_date":"2015-10-28","city":"MOJAVE","country_code":"US","county_code":"029","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"34703","engine_horsepower":0,"engine_maker":"IVCHENKO","engine_model":"AI-25TL","engine_thrust_lb":3792,"expiration_date":"2028-10-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-06-16","maker":"Aero Vodochody","maker_country":null,"maker_raw":"AERO VODOCHODY","maker_segment":null,"mfr_mdl_code":"05620RN","mode_s_code":"50117245","mode_s_hex":"A09EA5","model":"L39C","n_number":"N139WS","name":"NATIONAL TEST PILOT SCHOOL","num_engines":1,"other_names":"","plain_english":"N139WS is an Aero Vodochody L39C, a fixed-wing airplane with one motor with turbofan engines, built in 1984. It has 1 seat. It is registered to National Test Pilot School, a corporation in Mojave, California. The registration is valid: it was issued on October 28, 2015 and expires on October 31, 2028. It holds an experimental airworthiness certificate for research and development; crew training, dated December 3, 2025.","region":"Western-Pacific","region_code":"4","registrant_type":"Corporation","registrant_type_code":"3","seats":1,"serial_number":"432931","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"CA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"1030 FLIGHT LINE STE 72","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Turbofan","type_engine_code":"5","unique_id":"00006841","url":"https://staging.data.eflight.com/aircraft/N139WS","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1984,"zip":"935011679"}