{"airworthiness_class":"Restricted","airworthiness_date":"1978-03-13","airworthiness_ops":"Aerial surveying","category":"conventional","cert_issue_date":"2019-09-14","city":"PHILADELPHIA","country_code":"US","county_code":"101","cruise_speed_mph":131,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"01514","engine_horsepower":904,"engine_maker":"AIRESEARCH","engine_model":"TPE331 SERIES","engine_thrust_lb":0,"expiration_date":"2029-09-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-09-02","maker":"Cessna","maker_country":null,"maker_raw":"CESSNA","maker_segment":null,"mfr_mdl_code":"2076020","mode_s_code":"52773002","mode_s_hex":"ABF602","model":"441","n_number":"N87WS","name":"KEYSTONE AERIAL SURVEYS INC","num_engines":2,"other_names":"","plain_english":"N87WS is a Cessna 441, a fixed-wing airplane with more than one motor with turboprop engines, built in 1977. It has 10 seats. It is registered to Keystone Aerial Surveys INC, a corporation in Philadelphia, Pennsylvania. The registration is valid: it was issued on September 14, 2019 and expires on September 30, 2029. It holds a restricted airworthiness certificate for aerial surveying, dated March 13, 1978.","region":"Eastern","region_code":"1","registrant_type":"Corporation","registrant_type_code":"3","seats":10,"serial_number":"441-0009","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"PA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"PO BOX 21059","street2":"","type_aircraft":"Fixed-wing, multi-engine","type_aircraft_code":"5","type_engine":"Turboprop","type_engine_code":"2","unique_id":"00425220","url":"https://staging.data.eflight.com/aircraft/N87WS","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1977,"zip":"191140559"}