{"airworthiness_class":"Experimental","airworthiness_date":"1989-05-11","airworthiness_ops":"Amateur built","category":"conventional","cert_issue_date":"2024-03-05","city":"READING","country_code":"US","county_code":"011","cruise_speed_mph":null,"data_date":"2026-09-25","documents":[],"eng_mfr_mdl":"17020","engine_horsepower":100,"engine_maker":"CONT MOTOR","engine_model":"0-200 SERIES","engine_thrust_lb":0,"expiration_date":"2031-03-31","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kit_mfr":"","kit_model":"","last_action_date":"2024-03-05","maker":"Merkel Howard H","maker_country":null,"maker_raw":"MERKEL HOWARD H","maker_segment":null,"mfr_mdl_code":"13015AC","mode_s_code":"50224304","mode_s_hex":"A128C4","model":"J4B-2","n_number":"N174HM","name":"MID ATLANTIC AIR MUSEUM","num_engines":1,"other_names":"","plain_english":"N174HM is a Merkel Howard H J4B-2, a rotorcraft with a piston engine (a helicopter or multicopter). It has 2 seats. It is registered to Mid Atlantic Air Museum, a corporation in Reading, Pennsylvania. The registration is valid: it was issued on March 5, 2024 and expires on March 31, 2031. It holds an experimental airworthiness certificate for amateur built, dated May 11, 1989.","region":"Eastern","region_code":"1","registrant_type":"Corporation","registrant_type_code":"3","seats":2,"serial_number":"HM-174","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"PA","status":"Valid registration","status_code":"V","status_short":"Valid","street":"11 MUSEUM DR","street2":"","type_aircraft":"Rotorcraft","type_aircraft_code":"6","type_engine":"Piston (reciprocating)","type_engine_code":"1","unique_id":"00995470","url":"https://staging.data.eflight.com/aircraft/N174HM","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":null,"zip":"19605"}