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N444MAUnderwood Harold THORP S-18 · 2002

ExperimentalLycoming IO-360-B1BLees Summit, MO

N444MA is a 2002 Underwood Harold THORP S-18. It is a fixed-wing single-engine aircraft with 2 seats, powered by a Lycoming IO-360-B1B rated at 180 horsepower. The registration is active, with the registrant based in Lees Summit, MO. Its experimental airworthiness certificate was issued in Apr 2026. It has been registered to its current owner since Mar 2022.

  • 24 years old
  • No NTSB events on record

2026

FAA record · Apr 2026 · Airworthiness
Special Airworthiness Certificate issued — Experimental
Manufacturer: Underwood Harold. Model THORP S-18. Serial 1HU.

2022

FAA record · Mar 2022 · Registration
Registered to current owner
Registered to First Order Aeronautics LLC. Registrant based in Lees Summit, MO.

That's everything on file so far — TailWiki checks the FAA registry daily and adds new entries as N444MA's record changes.