The U.S. aircraft register, updated daily · Carbon Free Flight by 2050
Maker · data as of October 2, 2026

Simpson William S

1 aircraft on the U.S. register. The most recent registration was February 3, 2023.

Models

THORP T-181

THORP T-18

States

Illinois1

Registrations by year

0001112023

Aircraft newest first

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N85FT Simpson William S
THORP T-18
Fixed-wing, single engine Individual owner
Illinois
Experimental 2023-02-03 Valid