| Tail Number / N-Number | N331ER |
| Manufacturer | ROY EDWARD R |
| Model | ROY-DAVIS D2B+ |
| Year Built | 2011 |
| Manufacturer's Serial Number | 01 |
| 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 | CONT MOTOR |
| Engine Model | O-200-D |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Type of Registrant | Individual |
| Owner Name | PATTEN BRUCE K |
| Street | 1161 E POND RD |
| City | SMITHFIELD |
| State | ME |
| Zip Code | 04978-3213 |
| Region | New England |
| County | Somerset County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2011-09-12 |
| Certificate Issue Date | 2020-10-02 |
| Last Action Date | 2020-10-02 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 50714772 |
| Mode S Code Hex | A399FA |