{"airworthiness_class":"","airworthiness_date":"","airworthiness_ops":"","category":"drone","cert_issue_date":"2026-06-18","city":"MIDLAND","country_code":"US","county_code":"329","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"","engine_horsepower":null,"engine_maker":"","engine_model":"","engine_thrust_lb":null,"expiration_date":"2033-06-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2026-06-18","maker":"Rohlfs R&D Llc","maker_country":null,"maker_raw":"ROHLFS R&D LLC","maker_segment":null,"mfr_mdl_code":"06102M2","mode_s_code":"51546016","mode_s_hex":"A6CC0E","model":"R-330 MK1","n_number":"N537SR","name":"ROHLFS R&D LLC","num_engines":1,"other_names":"","plain_english":"N537SR is a Rohlfs R&D Llc R-330 MK1, a rotorcraft with turbofan engines (a helicopter or multicopter). It is unmanned. It is registered to Rohlfs R&D LLC, an LLC in Midland, Texas. The registration is valid: it was issued on June 18, 2026 and expires on June 30, 2033. No airworthiness certificate is on file, which is normal for drones and for aircraft still being built or tested.","region":"Southwestern","region_code":"2","registrant_type":"LLC","registrant_type_code":"7","seats":0,"serial_number":"186975008351","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"TX","status":"Valid registration","status_code":"V","status_short":"Valid","street":"1608 N I ST","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Turbofan","type_engine_code":"5","unique_id":"01539558","url":"https://staging.data.eflight.com/aircraft/N537SR","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"797014036"}