| Tail Number / N-Number | N77AK |
| Manufacturer | THORP |
| Model | T-18 |
| Year Built | 1969 |
| Manufacturer's Serial Number | 390-A |
| 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) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Individual |
| Owner Name | RIVERS PAUL E |
| Street | 15127 SHANNON RTE |
| City | SHANNON |
| State | IL |
| Zip Code | 61078-9242 |
| Region | Great Lakes |
| County | Carroll County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2003-08-13 |
| Certificate Issue Date | 2012-05-02 |
| Last Action Date | 2021-01-12 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 52463270 |
| Mode S Code Hex | AA66B8 |