{"airworthiness_class":"Standard","airworthiness_date":"1973-01-05","airworthiness_ops":"Normal","category":"conventional","cert_issue_date":"2014-03-13","city":"BALTIMORE","country_code":"US","county_code":"510","cruise_speed_mph":165,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"41539","engine_horsepower":400,"engine_maker":"LYCOMING","engine_model":"TIGO-541SER","engine_thrust_lb":0,"expiration_date":"2027-03-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2023-01-22","maker":"Beech","maker_country":null,"maker_raw":"BEECH","maker_segment":null,"mfr_mdl_code":"1151004","mode_s_code":"51124102","mode_s_hex":"A4A842","model":"D18S","n_number":"N4DH","name":"GLENN L MARTIN MARYLAND AVIATION MUSEUM","num_engines":2,"other_names":"","plain_english":"N4DH is a Beech D18S, a fixed-wing airplane with more than one motor with a piston engine, built in 1946. It has 10 seats. It is registered to Glenn L Martin Maryland Aviation Museum, a corporation in Baltimore, Maryland. The registration is valid: it was issued on March 13, 2014 and expires on March 31, 2027. It holds a standard airworthiness certificate for normal, dated January 5, 1973.","region":"Eastern","region_code":"1","registrant_type":"Corporation","registrant_type_code":"3","seats":10,"serial_number":"A-260","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"MD","status":"Valid registration","status_code":"V","status_short":"Valid","street":"701 WILSON POINT RD","street2":"","type_aircraft":"Fixed-wing, multi-engine","type_aircraft_code":"5","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00280894","url":"https://staging.data.eflight.com/aircraft/N4DH","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1946,"zip":"212204238"}