Maker · data as of October 2, 2026

William R Mason

2 aircraft on the U.S. register. The most recent registration was August 26, 2025.

XE2901SONEX1

XE290 · SONEX

Tennessee2

Aircraft newest first

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N479RD	William R Mason XE290	Rotorcraft	Individual owner Tennessee	None on file	2025-08-26	Valid
N694DS	William R Mason SONEX	Fixed-wing, single engine	Individual owner Tennessee	None on file	2022-09-15	Valid