{"airworthiness_class":"Experimental","airworthiness_date":"2004-08-23","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"1998-02-13","city":"PRESCOTT VALLEY","country_code":"US","county_code":"025","cruise_speed_mph":null,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"59050","engine_horsepower":400,"engine_maker":"SUBARU","engine_model":"ALL MDLS A/B","engine_thrust_lb":0,"expiration_date":"2029-09-30","fractional_owner":0,"is_company":0,"is_electric":0,"is_unmanned_cert":0,"kind":"piston-singles","kit_mfr":"","kit_model":"","last_action_date":"2025-10-17","maker":"Spreuer Keith","maker_country":null,"maker_raw":"SPREUER KEITH","maker_segment":null,"mfr_mdl_code":"05605WK","mode_s_code":"53112504","mode_s_hex":"AC9544","model":"COZY MK IV","n_number":"N91KS","name":"SPREUER KEITH R","ntsb_checked":true,"ntsb_records":[],"num_engines":1,"other_names":"","plain_english":"N91KS is a Spreuer Keith COZY MK IV, a fixed-wing airplane with one motor with a piston engine, built in 2004. It has 4 seats. It is registered to an individual in Prescott Valley, Arizona. The registration is valid: it was issued on February 13, 1998 and expires on September 30, 2029. It holds an experimental airworthiness certificate for amateur built, dated August 23, 2004.","records_check":[{"finding":"Valid registration to Spreuer Keith R, an individual, certificate issued February 13, 1998, expires September 30, 2029. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"Experimental certificate for amateur built, dated August 23, 2004, consistent with the 2004 manufacture year.","item":"Airworthiness certificate","source":1,"status":"CLEAR"},{"finding":"No earlier tail number is recorded against serial 0018 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N91KS was previously assigned to 1 other aircraft: Denney L Dan KITFOX IV (serial 1515, cancelled August 30, 1995). 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 N91KS. 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":"Western-Pacific","region_code":"4","registrant_type":"Individual","registrant_type_code":"1","seats":4,"serial_number":"0018","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"AZ","status":"Valid registration","status_code":"V","status_short":"Valid","street":"7743 E LAVENDER LOOP","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00127021","url":"https://eflight.com/aircraft/N91KS","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2004,"zip":"863157860"}