| Tail Number / N-Number | N999MR |
| Manufacturer | RUSSELL MARK |
| Model | RV-4 |
| Year Built | 2002 |
| Manufacturer's Serial Number | 3331 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-4 |
| Type of Registrant | Individual |
| Owner Name | ORTH JACOB N |
| Street | 3523 TRAILWAY PARK ST |
| City | SAN ANTONIO |
| State | TX |
| Zip Code | 78247-2927 |
| Region | Southwestern |
| County | Bexar County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2003-09-18 |
| Certificate Issue Date | 2020-09-10 |
| Last Action Date | 2020-09-10 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 53372465 |
| Mode S Code Hex | ADF535 |