{"airworthiness_class":"Standard","airworthiness_date":"2015-02-23","airworthiness_ops":"Balloon","category":"conventional","cert_issue_date":"2020-07-13","city":"GLENDIVE","country_code":"US","county_code":"021","cruise_speed_mph":null,"data_date":"2026-10-02","documents":[{"collateral_type":"Aircraft","doc_type":"Bill of sale (evidence of ownership)","doc_type_code":"BOS","party":"","receipt_date":"2026-09-16"}],"eng_mfr_mdl":"99999","engine_horsepower":0,"engine_maker":"AMA/EXPR","engine_model":"UNKNOWN ENG","engine_thrust_lb":0,"expiration_date":"2027-07-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"piston-singles","kit_mfr":"VANS AIRCRAFT INC","kit_model":"RV-9A","last_action_date":"2026-03-28","maker":"Theodore G Kopp","maker_country":null,"maker_raw":"THEODORE G KOPP","maker_segment":null,"mfr_mdl_code":"05633QG","mode_s_code":"50642543","mode_s_hex":"A34563","model":"RV-9A","n_number":"N31KK","name":"KOPP THEODORE G","ntsb_checked":true,"ntsb_records":[],"num_engines":1,"other_names":"KOPP JO A","plain_english":"N31KK is a Theodore G Kopp RV-9A, a fixed-wing airplane with one motor with a four-stroke engine, built in 2014. It has 2 seats. It is registered to Kopp Theodore G, a partnership in Glendive, Montana. The registration is valid: it was issued on July 13, 2020 and expires on July 31, 2027. It holds a standard airworthiness certificate for balloon, dated February 23, 2015. 1 document is on file: bill of sale (evidence of ownership).","records_check":[{"finding":"Valid registration to Kopp Theodore G, a partnership, certificate issued July 13, 2020, expires July 31, 2027. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"Standard certificate for balloon, dated February 23, 2015, consistent with the 2014 manufacture year.","item":"Airworthiness certificate","source":1,"status":"CLEAR"},{"finding":"No earlier tail number is recorded against serial 91839 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N31KK was previously assigned to 2 other aircraft: Bell 206L-3 (serial 51182, cancelled August 17, 2010); Cessna 172I (serial 17257095, cancelled July 28, 2008). 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":"1 document received recently: Bill of sale (evidence of ownership) (September 16, 2026).","item":"Recent registry documents","source":3,"status":"NOTE"},{"finding":"No NTSB investigation records located under N31KK. 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":"Northwest Mountain","region_code":"S","registrant_type":"Partnership","registrant_type_code":"2","seats":2,"serial_number":"91839","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"MT","status":"Valid registration","status_code":"V","status_short":"Valid","street":"403 LITTLE ST","street2":"","type_aircraft":"Fixed-wing, single engine","type_aircraft_code":"4","type_engine":"Four-cycle piston","type_engine_code":"8","unique_id":"01156846","url":"https://eflight.com/aircraft/N31KK","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2014,"zip":"593302845"}