{"airworthiness_class":"Experimental","airworthiness_date":"2025-09-30","airworthiness_ops":"Exhibition","category":"conventional","cert_issue_date":"2025-09-08","city":"CAMDEN","country_code":"US","county_code":"001","cruise_speed_mph":363,"data_date":"2026-10-02","documents":[],"eng_mfr_mdl":"30122","engine_horsepower":0,"engine_maker":"GE","engine_model":"CJ610-6","engine_thrust_lb":2950,"expiration_date":"2032-09-30","fractional_owner":0,"is_company":1,"is_electric":0,"is_unmanned_cert":0,"kind":"business-jets","kit_mfr":"","kit_model":"","last_action_date":"2025-09-08","maker":"Learjet Inc","maker_country":null,"maker_raw":"LEARJET INC","maker_segment":null,"mfr_mdl_code":"5170310","mode_s_code":"51126705","mode_s_hex":"A4ADC5","model":"24D","n_number":"N400MS","name":"MIL OH LLC","ntsb_checked":true,"ntsb_records":[],"num_engines":2,"other_names":"","plain_english":"N400MS is a Learjet Inc 24D, a fixed-wing airplane with more than one motor with turbojet engines, built in 1972. It has 8 seats. It is registered to Mil Oh LLC, an LLC in Camden, Delaware. The registration is valid: it was issued on September 8, 2025 and expires on September 30, 2032. It holds an experimental airworthiness certificate for exhibition, dated September 30, 2025.","records_check":[{"finding":"Valid registration to Mil Oh LLC, an LLC, certificate issued September 8, 2025, expires September 30, 2032. No fractional interest recorded.","item":"Registration and identity","source":1,"status":"CLEAR"},{"finding":"The airworthiness certificate on file is dated September 30, 2025, 53 years after the 1972 manufacture year. A re-issued certificate commonly follows export and re-import, a rebuild, or a return to the register after cancellation. The cause is documented in the FAA aircraft records file, which the full report obtains.","item":"Airworthiness certificate date","source":1,"status":"ATTENTION"},{"finding":"No earlier tail number is recorded against serial 246 for this model in the deregistered file.","item":"Prior registrations of this airframe","source":2,"status":"CLEAR"},{"finding":"N400MS was previously assigned to 1 other aircraft: Otis Robert R WINDROSE (serial 20, cancelled October 23, 2000). 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":"No NTSB investigation records located under N400MS. CLEAR means the query ran and returned nothing, not that nothing ever happened.","item":"Accident and incident record","source":4,"status":"CLEAR"},{"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":"Eastern","region_code":"1","registrant_type":"LLC","registrant_type_code":"7","seats":8,"serial_number":"246","source":"FAA Civil Aviation Registry, Releasable Aircraft Database","state":"DE","status":"Valid registration","status_code":"V","status_short":"Valid","street":"2140 S DUPONT HWY","street2":"","type_aircraft":"Fixed-wing, multi-engine","type_aircraft_code":"5","type_engine":"Turbojet","type_engine_code":"4","unique_id":"00420885","url":"https://eflight.com/aircraft/N400MS","watchlist_group":null,"watchlist_note":null,"weight_class":"","year_mfr":1972,"zip":"199341249"}