{"airworthiness_class":"","airworthiness_date":"","airworthiness_ops":"","category":"conventional","cert_issue_date":"","city":"TORRANCE","country_code":"US","county_code":"037","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":"2026-09-24"}],"eng_mfr_mdl":"","engine_horsepower":null,"engine_maker":"","engine_model":"","engine_thrust_lb":null,"expiration_date":"","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2026-07-29","maker":"Robinson Helicopter","maker_country":"US","maker_raw":"ROBINSON HELICOPTER CO","maker_segment":"Helicopter","mfr_mdl_code":"7640130","mode_s_code":"51131650","mode_s_hex":"A4B3A8","model":"R66","n_number":"N4017C","name":"ROBINSON HELICOPTER CO","ntsb_checked":true,"ntsb_records":[{"city":"Clarion","damage":"SUBS","date":"2014-09-20","highest_injury":"SERS","ntsb_no":"ERA14LA450","probable_cause":"The pilot's inadequate preflight planning, which resulted in a takeoff with the airplane's center of gravity aft of its limit and led the airplane to exceed its critical angle of attack and experience an aerodynamic stall during the initial climb. Contributing to the accident was the pilot's lack of flight experience in the aircraft make and model.","registration":"N4017C","state":"PA","summary":"Accident on September 20, 2014 at Clarion, PA: serious injuries, substantial damage.","type":"ACC"}],"num_engines":1,"other_names":"","plain_english":"N4017C is a Robinson Helicopter R66, a rotorcraft with turboshaft engines (a helicopter or multicopter). It has 5 seats. It is registered to Robinson Helicopter CO, a corporation in Torrance, California. The registration is valid: it was issued on  and expires on . 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 Robinson Helicopter CO, a corporation, certificate issued , expires date not given. 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 1555 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N4017C was previously assigned to 2 other aircraft: Barger Jerry L CHALLENGER II (serial 67001, cancelled May 30, 2018); Stinson 108-3 (serial 108-5017, cancelled June 14, 1976). 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 24, 2026).","item":"Recent registry documents","source":3,"status":"NOTE"},{"finding":"1 NTSB record under N4017C: Accident on September 20, 2014 at Clarion, PA: serious 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":"Western-Pacific","region_code":"4","registrant_type":"Corporation","registrant_type_code":"3","seats":5,"serial_number":"1555","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"CA","status":"Valid, assigned to the manufacturer under its dealer certificate","status_code":"M","status_short":"Valid (manufacturer)","street":"2901 AIRPORT DR","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Turboshaft","type_engine_code":"3","unique_id":"01570046","url":"https://eflight.com/aircraft/N4017C","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"905056115"}