{"airworthiness_class":"Standard","airworthiness_date":"1973-05-14","airworthiness_ops":"Normal","category":"conventional","cert_issue_date":"2014-05-20","city":"CLEARWATER BEACH","country_code":"US","county_code":"103","cruise_speed_mph":78,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"41525","engine_horsepower":260,"engine_maker":"LYCOMING","engine_model":"VO-435 SERIES","engine_thrust_lb":0,"expiration_date":"2027-05-31","fractional_owner":0,"is_company":0,"is_electric":0,"is_unmanned_cert":0,"kind":"helicopters","kit_mfr":"","kit_model":"","last_action_date":"2023-01-22","maker":"Bell","maker_country":null,"maker_raw":"BELL","maker_segment":null,"mfr_mdl_code":"1181034","mode_s_code":"52747022","mode_s_hex":"ABCE12","model":"47G-5A","n_number":"N86SD","name":"YOUNG RANDALL K","ntsb_checked":true,"ntsb_records":[{"city":"ZWINGLE","damage":"DEST","date":"1993-04-19","highest_injury":"FATL","ntsb_no":"DCA93GA042","probable_cause":"THE FATIGUE CRACKING AND FRACTURE OF THE PROPELLER HUB ARM.  THE RESULTANT SEPARATION OF THE HUB ARM AND THE PROPELLER BLADE DAMAGED THE ENGINE, NACELLE, WING, AND FUSELAGE, THEREBY CAUSING SIGNIFICANT DEGRADATION TO AIRCRAFT PERFORMANCE AND CONTROL THAT MADE A SUCCESSFUL LANDING PROBLEMATIC.  THE CAUSE OF THE PROPELLER HUB ARM FRACTURE WAS A REDUCTION IN THE FATIGUE STRENGTH OF THE MATERIAL BECAUSE OF MANUFACTURING AND TIME-RELATED FACTORS (DECARBURIZATION, RESIDUAL STRESS, CORROSION, MIXED MICROSTRUCTURE, AND MACHINING/SCORING MARKS) THAT REDUCED THE FATIGUE RESISTANCE OF THE MATERIAL, PROBABLY COMBINED WITH EXPOSURE TO HIGHER-THAN-NORMAL CYCLIC LOADS DURING OPERATION OF THE PROPELLER AT A CRITICAL VIBRATION FREQUENCY (REACTIONLESS MODE), WHICH WAS NOT APPROPRIATELY CONSIDERED DURING THE AIRPLANE/PROPELLER CERTIFICATION PROCESS.","registration":"N86SD","state":"IA","summary":"Accident on April 19, 1993 at Zwingle, IA: fatal, destroyed (8 fatal).","type":"ACC"}],"num_engines":1,"other_names":"","plain_english":"N86SD is a Bell 47G-5A, a rotorcraft with a piston engine (a helicopter or multicopter), built in 1973. It has 3 seats. It is registered to an individual in Clearwater Beach, Florida. The registration is valid: it was issued on May 20, 2014 and expires on May 31, 2027. It holds a standard airworthiness certificate for normal, dated May 14, 1973.","records_check":[{"finding":"Valid registration to Young Randall K, an individual, certificate issued May 20, 2014, expires May 31, 2027. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"Standard certificate for normal, dated May 14, 1973, consistent with the 1973 manufacture year.","item":"Airworthiness certificate","source":1,"status":"CLEAR"},{"finding":"No earlier tail number is recorded against serial 25118 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N86SD was previously assigned to 1 other aircraft: Mitsubishi MU-2B-60 (serial 765SA, cancelled July 14, 1994). 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 N86SD: Accident on April 19, 1993 at Zwingle, IA: fatal, destroyed (8 fatal). 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":"Individual","registrant_type_code":"1","seats":3,"serial_number":"25118","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"FL","status":"Valid registration","status_code":"V","status_short":"Valid","street":"805 MANDALAY AVE","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00570842","url":"https://eflight.com/aircraft/N86SD","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1973,"zip":"337671325"}