William B Mason
1 aircraft on the U.S. register. The most recent registration was August 4, 2025.
Models
PIETENPOL1
States
Montana1
Registrations by year
Aircraft newest first
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N32BM | William B Mason PIETENPOL |
Fixed-wing, single engine | Preston Pietenpol Project LLC Kalispell, Montana |
Experimental | 2025-08-04 | Valid |