{"airworthiness_class":"Standard","airworthiness_date":"1960-03-25","airworthiness_ops":"","category":"conventional","cert_issue_date":"2026-04-01","city":"OXFORD","country_code":"US","county_code":"009","cruise_speed_mph":150,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"52008","engine_horsepower":450,"engine_maker":"P&W","engine_model":"R-985 SERIES","engine_thrust_lb":0,"expiration_date":"2033-04-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"piston-twins","kit_mfr":"","kit_model":"","last_action_date":"2026-04-01","maker":"Grumman","maker_country":null,"maker_raw":"GRUMMAN","maker_segment":null,"mfr_mdl_code":"3951204","mode_s_code":"51610670","mode_s_hex":"A711B8","model":"G-21A","n_number":"N5548A","name":"STAGE ONE ASSOCIATES LLC","ntsb_checked":true,"ntsb_records":[{"city":"LAUDERDALE LAKE","damage":"DEST","date":"1999-03-25","highest_injury":"FATL","ntsb_no":"MIA99FA114","probable_cause":"The pilots failure to correctly identify an in-flight emergency (fluctuating manifold pressure and rpm due to a disconnected spark plug lead / unscrewed ignition lead shroud) and failure to complete the engine shutdown procedure once it was initiated (propeller not feathered). This resulted in a forced landing and subsequent in-flight collision with a tree, dirt bank and canal. Contributing to the accident was the FAA inspectors improper supervision of the pilot, and the improper supervision of the inspector by her supervisor, in his failure to follow written procedures / directives in assigning a non-current inspector to conduct a competency flight.","registration":"N5548A","state":"FL","summary":"Accident on March 25, 1999 at Lauderdale Lake, FL: fatal, destroyed (1 fatal).","type":"ACC"}],"num_engines":2,"other_names":"","plain_english":"N5548A is a Grumman G-21A, a fixed-wing airplane with more than one motor with a piston engine, built in 1959. It has 8 seats. It is registered to Stage One Associates LLC, an LLC in Oxford, Connecticut. The registration is valid: it was issued on April 1, 2026 and expires on April 30, 2033. It holds a standard airworthiness certificate, dated March 25, 1960.","records_check":[{"finding":"Valid registration to Stage One Associates LLC, an LLC, certificate issued April 1, 2026, expires April 30, 2033. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"Standard certificate, dated March 25, 1960, consistent with the 1959 manufacture year.","item":"Airworthiness certificate","source":1,"status":"CLEAR"},{"finding":"No earlier tail number is recorded against serial 75-7661 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"No other airframe has carried N5548A according to the deregistered file.","item":"Tail number reuse","source":2,"status":"CLEAR"},{"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 N5548A: Accident on March 25, 1999 at Lauderdale Lake, FL: fatal, destroyed (1 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":"New England","region_code":"E","registrant_type":"LLC","registrant_type_code":"7","seats":8,"serial_number":"75-7661","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"CT","status":"Valid registration","status_code":"V","status_short":"Valid","street":"C/O TRADEWIND AVIATION","street2":"3 JULIANO DR","type_aircraft":"Fixed-wing, multi-engine","type_aircraft_code":"5","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00243545","url":"https://eflight.com/aircraft/N5548A","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1959,"zip":"06478"}