The U.S. aircraft register, updated daily
Maker · data as of November 6, 2026

William B Mason

1 aircraft on the U.S. register. The most recent registration was August 4, 2025.

Models

PIETENPOL1
Models, as a table
aircraft
PIETENPOL1

PIETENPOL

States

Montana1
By state, as a table
aircraft
Montana1

Registrations by year

0001112025
Registrations by year, as a table
aircraft
20251

Connections how William B Mason links to the rest of the register

Engines
Where they are
Analytics

The whole map of how records connect · these connections as data: /graph/maker/william-b-mason.json.

Aircraft newest first

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N32BM William B Mason
PIETENPOL
 Fixed-wing, single engine Preston Pietenpol Project LLC
Kalispell, Montana
 Experimental 2025-08-04 ValidFAA registration status code V: Valid registration. All codes