{"airworthiness_class":"Standard","airworthiness_date":"2025-09-24","airworthiness_ops":"Transport","category":"conventional","cert_issue_date":"2026-01-05","city":"KEY WEST","country_code":"US","county_code":"087","cruise_speed_mph":null,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"52174","engine_horsepower":1679,"engine_maker":"P&W CANADA","engine_model":"PT6C-67C","engine_thrust_lb":0,"expiration_date":"2033-01-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2026-01-05","maker":"Agustawestland Philadelphia","maker_country":null,"maker_raw":"AGUSTAWESTLAND PHILADELPHIA","maker_segment":null,"mfr_mdl_code":"0260400","mode_s_code":"53115351","mode_s_hex":"AC9AE9","model":"AW139","n_number":"N911FK","name":"MONROE COUNTY FLORIDA","ntsb_checked":true,"ntsb_records":[{"city":"Islamorada","damage":"SUBS","date":"2017-12-15","highest_injury":"NONE","ntsb_no":"ERA18LA053","probable_cause":"The pilot's activation of the rotor brake while the No. 2 engine was still set to govern the power turbine speed, which resulted in continuous power being applied to the rotor while the rotor brake was engaged and led to excessive friction, heat, and a subsequent fire in the area of the rotor brake.","registration":"N911FK","state":"FL","summary":"Accident on December 15, 2017 at Islamorada, FL: no injuries, substantial damage.","type":"ACC"}],"num_engines":2,"other_names":"","plain_english":"N911FK is an Agustawestland Philadelphia AW139, a rotorcraft with turboshaft engines (a helicopter or multicopter), built in 2025. It has 17 seats. It is registered to Monroe County Florida, a government body in Key West, Florida. The registration is valid: it was issued on January 5, 2026 and expires on January 31, 2033. It holds a standard airworthiness certificate for transport, dated September 24, 2025.","records_check":[{"finding":"Valid registration to Monroe County Florida, a government body, certificate issued January 5, 2026, expires January 31, 2033. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"Standard certificate for transport, dated September 24, 2025, consistent with the 2025 manufacture year.","item":"Airworthiness certificate","source":1,"status":"CLEAR"},{"finding":"No earlier tail number is recorded against serial 41606 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N911FK was previously assigned to 1 other aircraft: Sikorsky S-76A (serial 760197, cancelled January 22, 2019). 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":"1 NTSB record under N911FK: Accident on December 15, 2017 at Islamorada, FL: 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":"Southern","region_code":"7","registrant_type":"Government","registrant_type_code":"5","seats":17,"serial_number":"41606","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"FL","status":"Valid registration","status_code":"V","status_short":"Valid","street":"1100 SIMONTON ST","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Turboshaft","type_engine_code":"3","unique_id":"01470454","url":"https://eflight.com/aircraft/N911FK","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":2025,"zip":"330403110"}