{"airworthiness_class":"","airworthiness_date":"","airworthiness_ops":"","category":"conventional","cert_issue_date":"2012-04-27","city":"WASILLA","country_code":"US","county_code":"170","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":"2026-09-02"}],"eng_mfr_mdl":"","engine_horsepower":null,"engine_maker":"","engine_model":"","engine_thrust_lb":null,"expiration_date":"2028-04-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2023-05-05","maker":"Robinson Helicopter","maker_country":"US","maker_raw":"ROBINSON HELICOPTER","maker_segment":"Helicopter","mfr_mdl_code":"7640120","mode_s_code":"52610300","mode_s_hex":"AB10C0","model":"R44","n_number":"N81191","name":"CASTOR AVIATION LTD","ntsb_checked":true,"ntsb_records":[{"city":"Seward","damage":"SUBS","date":"2010-05-15","highest_injury":"NONE","ntsb_no":"ANC10CA040","probable_cause":"The pilot's failure to maintain clearance from snow-covered terrain while hovering in flat light conditions, which resulted in a dynamic rollover.","registration":"N81191","state":"AK","summary":"Accident on May 15, 2010 at Seward, AK: no injuries, substantial damage.","type":"ACC"},{"city":"GLENDALE","damage":"SUBS","date":"1983-03-29","highest_injury":"NONE","ntsb_no":"LAX83LA168","probable_cause":"","registration":"N81191","state":"AZ","summary":"Accident on March 29, 1983 at Glendale, AZ: no injuries, substantial damage.","type":"ACC"}],"num_engines":1,"other_names":"","plain_english":"N81191 is a Robinson Helicopter R44, a rotorcraft with a piston engine (a helicopter or multicopter). It has 4 seats. It is registered to Castor Aviation LTD, a corporation in Wasilla, Alaska. The registration is valid: it was issued on April 27, 2012 and expires on April 30, 2028. No airworthiness certificate is on file, which is normal for drones and for aircraft still being built or tested. 1 document is on file: bill of sale (evidence of ownership).","records_check":[{"finding":"Valid registration to Castor Aviation LTD, a corporation, certificate issued April 27, 2012, expires April 30, 2028. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"No airworthiness certificate is on file. Usual for a newly registered aircraft, a project, or an aircraft that has not flown since a change of registration; ask for the certificate.","item":"Airworthiness certificate","source":1,"status":"ATTENTION"},{"finding":"No earlier tail number is recorded against serial 0855 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N81191 was previously assigned to 3 other aircraft: Ruminski Stanley J KOLB FIRESTAR (serial F1071, cancelled July 13, 1998); Cessna 421 (serial 4210031, cancelled December 6, 1989); Funk B85C (serial 321, cancelled April 29, 1974). 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 2, 2026).","item":"Recent registry documents","source":3,"status":"NOTE"},{"finding":"2 NTSB records under N81191: Accident on May 15, 2010 at Seward, AK: no injuries, substantial damage. Accident on March 29, 1983 at Glendale, AZ: no injuries, substantial damage. Details below.","item":"Accident and incident record","source":4,"status":"ATTENTION"},{"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":"Alaskan","region_code":"5","registrant_type":"Corporation","registrant_type_code":"3","seats":4,"serial_number":"0855","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"AK","status":"Valid registration","status_code":"V","status_short":"Valid","street":"6540 E BEECHCRAFT RD","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00257819","url":"https://eflight.com/aircraft/N81191","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"996549330"}