| Tail Number / N-Number | N33XX |
| Manufacturer | DORNIER |
| Model | BU 133 |
| Year Built | 1938 |
| Manufacturer's Serial Number | 14 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 114 miles per hour |
| Type of Registrant | Individual |
| Owner Name | PTACEK STEPHEN R |
| Street | 2934 ASPEN DR |
| City | ESTES PARK |
| State | CO |
| Zip Code | 80517-7001 |
| Region | Northwest Mountain |
| County | Larimer County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-11-19 |
| Certificate Issue Date | 1992-06-05 |
| Last Action Date | 2020-04-13 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 50712631 |
| Mode S Code Hex | A39599 |