| Tail Number / N-Number | N4291X |
| Manufacturer | EDWARD M KUSMIREK |
| Model | DORMOY BATHTUB |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | PORT TOWNSEND AERO MUSEUM |
| Street | 105 AIRPORT RD |
| City | PORT TOWNSEND |
| State | WA |
| Zip Code | 98368-9716 |
| Region | Northwest Mountain |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2015-02-23 |
| Last Action Date | 2020-11-11 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 51217637 |
| Mode S Code Hex | A51F9F |