{"airworthiness_class":"Experimental","airworthiness_date":"2025-09-02","airworthiness_ops":"Research and development; To show compliance with regulations","category":"conventional","cert_issue_date":"2023-06-06","city":"GUNTERSVILLE","country_code":"US","county_code":"095","cruise_speed_mph":null,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"30155","engine_horsepower":1994,"engine_maker":"GE","engine_model":"T700-GE-701D","engine_thrust_lb":0,"expiration_date":"2030-06-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2023-06-06","maker":"Sikorsky","maker_country":null,"maker_raw":"SIKORSKY","maker_segment":null,"mfr_mdl_code":"8146004","mode_s_code":"50054607","mode_s_hex":"A05987","model":"UH-60A","n_number":"N121XS","name":"ACE AERONAUTICS LLC","ntsb_checked":true,"ntsb_records":[],"num_engines":2,"other_names":"","plain_english":"N121XS is a Sikorsky UH-60A, a rotorcraft with turboshaft engines (a helicopter or multicopter), built in 1982. It has 15 seats. It is registered to Ace Aeronautics LLC, an LLC in Guntersville, Alabama. The registration is valid: it was issued on June 6, 2023 and expires on June 30, 2030. It holds an experimental airworthiness certificate for research and development; to show compliance with regulations, dated September 2, 2025.","records_check":[{"finding":"Valid registration to Ace Aeronautics LLC, an LLC, certificate issued June 6, 2023, expires June 30, 2030. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"The airworthiness certificate on file is dated September 2, 2025, 43 years after the 1982 manufacture year. A re-issued certificate commonly follows export and re-import, a rebuild, or a return to the register after cancellation. The cause is documented in the FAA aircraft records file, which the full report obtains.","item":"Airworthiness certificate date","source":1,"status":"ATTENTION"},{"finding":"No earlier tail number is recorded against serial 82-23660 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N121XS was previously assigned to 1 other aircraft: Armstrong B B/Armstrong S P EUROPA XS (serial A121MG, cancelled August 10, 2007). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number.","item":"Tail number reuse","source":2,"status":"ATTENTION"},{"finding":"No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file.","item":"Recent registry documents","source":3,"status":"NOTE"},{"finding":"No NTSB investigation records located under N121XS. CLEAR means the query ran and returned nothing, not that nothing ever happened.","item":"Accident and incident record","source":4,"status":"CLEAR"},{"finding":"These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.","item":"Title chain, liens and 337 forms","source":null,"status":"PENDING"},{"finding":"AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.","item":"Airworthiness directives and utilization","source":null,"status":"PENDING"}],"records_check_sources":[{"n":1,"name":"FAA Releasable Aircraft Database, master file","url":"https://registry.faa.gov/"},{"n":2,"name":"FAA deregistered aircraft file (part of the same download)","url":"https://registry.faa.gov/"},{"n":3,"name":"FAA document index: registry documents received in recent weeks","url":"https://registry.faa.gov/"},{"n":4,"name":"NTSB aviation accident database (CAROL)","url":"https://data.ntsb.gov/carol-main-public/basic-search"}],"region":"Southern","region_code":"7","registrant_type":"LLC","registrant_type_code":"7","seats":15,"serial_number":"82-23660","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"AL","status":"Valid registration","status_code":"V","status_short":"Valid","street":"105 BUCK ISLAND RD","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Turboshaft","type_engine_code":"3","unique_id":"01407590","url":"https://eflight.com/aircraft/N121XS","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1982,"zip":"359768697"}