| Tail Number / N-Number | N644JG |
| Manufacturer | GRZNAR JOHN R |
| Model | RV-12 |
| Year Built | 2016 |
| Manufacturer's Serial Number | 120644 |
| 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 | ROTAX |
| Engine Model | 912ULS2 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-12 |
| Type of Registrant | Individual |
| Owner Name | GRZNAR JOHN R |
| Street | 805 BELLFLOWER AVE SW |
| City | CANTON |
| State | OH |
| Zip Code | 44710-1531 |
| Region | Great Lakes |
| County | Stark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2016-08-08 |
| Certificate Issue Date | 2016-06-07 |
| Last Action Date | 2022-05-24 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 52072346 |
| Mode S Code Hex | A874E6 |