| Tail Number / N-Number | N4086K |
| Manufacturer | JUNGSTER II |
| Model | RK2 |
| Year Built | 1966 |
| Manufacturer's Serial Number | 1 |
| 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 | 0-235 SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 115 hp (86 kW) |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ROBINSON MARK V |
| Street | 251 HIDDEN VALLEY LN |
| City | VACAVILLE |
| State | CA |
| Zip Code | 95688-2449 |
| Region | Western-Pacific |
| County | Solano County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1980-09-26 |
| Certificate Issue Date | 2000-12-11 |
| Last Action Date | 2022-03-09 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51146615 |
| Mode S Code Hex | A4CD8D |