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

Robert R Duff

1 aircraft on the U.S. register. The most recent registration was August 25, 2025.

Models

R56R1

R56R

States

Missouri1

Registrations by year

0001112025

Aircraft newest first

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N933RD Robert R Duff
R56R
Balloon Tdr Balloon Company LLC
Saint Louis, Missouri
Experimental 2025-08-25 Valid