{"airworthiness_class":"Standard","airworthiness_date":"2021-06-14","airworthiness_ops":"Normal","category":"conventional","cert_issue_date":"2016-12-23","city":"SOUTH BARRINGTON","country_code":"US","county_code":"097","cruise_speed_mph":null,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"41899","engine_horsepower":260,"engine_maker":"LYCOMING","engine_model":"IO-540-AE1A5","engine_thrust_lb":0,"expiration_date":"2029-12-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2023-09-22","maker":"Robinson Helicopter","maker_country":"US","maker_raw":"ROBINSON HELICOPTER COMPANY","maker_segment":"Helicopter","mfr_mdl_code":"7640122","mode_s_code":"51170420","mode_s_hex":"A4F110","model":"R44 II","n_number":"N4174L","name":"CST & SONS LLC","ntsb_checked":true,"ntsb_records":[{"city":"Charles City","damage":"SUBS","date":"2023-07-26","highest_injury":"NONE","ntsb_no":"CEN23LA326","probable_cause":"The pilot\u2019s improper preflight of the helicopter to ensure that it was within the loading and performance limitations that resulted in settling and impact with terrain during initial climb.","registration":"N4174L","state":"IA","summary":"Accident on July 26, 2023 at Charles City, IA: no injuries, substantial damage.","type":"ACC"},{"city":"ANACORTES","damage":"SUBS","date":"1990-10-27","highest_injury":"NONE","ntsb_no":"SEA91LA011","probable_cause":"THE PILOT POORLY COMPENSATED FOR THE WIND CONDITION.","registration":"N4174L","state":"WA","summary":"Accident on October 27, 1990 at Anacortes, WA: no injuries, substantial damage.","type":"ACC"}],"num_engines":1,"other_names":"","plain_english":"N4174L is a Robinson Helicopter R44 II, a rotorcraft with a piston engine (a helicopter or multicopter), built in 2008. It has 4 seats. It is registered to Cst & Sons LLC, an LLC in South Barrington, Illinois. The registration is valid: it was issued on December 23, 2016 and expires on December 31, 2029. It holds a standard airworthiness certificate for normal, dated June 14, 2021.","records_check":[{"finding":"Valid registration to Cst & Sons LLC, an LLC, certificate issued December 23, 2016, expires December 31, 2029. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"The airworthiness certificate on file is dated June 14, 2021, 13 years after the 2008 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 12495 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N4174L was previously assigned to 1 other aircraft: Cessna 172G (serial 17254243, cancelled November 23, 1993). 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":"2 NTSB records under N4174L: Accident on July 26, 2023 at Charles City, IA: no injuries, substantial damage. Accident on October 27, 1990 at Anacortes, WA: 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":"Great Lakes","region_code":"C","registrant_type":"LLC","registrant_type_code":"7","seats":4,"serial_number":"12495","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"IL","status":"Valid registration","status_code":"V","status_short":"Valid","street":"21 OLYMPIC DR","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"01015973","url":"https://eflight.com/aircraft/N4174L","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2008,"zip":"600101093"}