| Tail Number / N-Number | N661GR |
| Manufacturer | DAVID LEE AHRENS |
| Model | AHRENS 2 |
| Year Built | 2019 |
| Manufacturer's Serial Number | 26003 |
| 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 | MATTITUCK |
| Engine Model | TMX 360 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | AHRENS DAVID LEE |
| Street | 1142 WEYAND WAY |
| City | SHAFTER |
| State | CA |
| Zip Code | 93263-2442 |
| Region | Western-Pacific |
| County | Kern County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2020-01-03 |
| Certificate Issue Date | 2019-10-21 |
| Last Action Date | 2022-08-14 |
| Expiration Date | 2029-10-31 |
| Status | Valid Registration |
| Mode S Code | 52134226 |
| Mode S Code Hex | A8B896 |