| Tail Number / N-Number | N23RS |
| Manufacturer | SIWIK RONALD A |
| Model | PITTS SPECIAL S-1 |
| Year Built | 1981 |
| Manufacturer's Serial Number | 8-0035 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | AEIO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | PACOUREK JOHN R |
| Street | E2726 COUNTY ROAD K |
| City | CASCO |
| State | WI |
| Zip Code | 54205-9448 |
| Region | Great Lakes |
| County | Kewaunee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1982-06-25 |
| Certificate Issue Date | 2021-09-09 |
| Last Action Date | 2021-09-09 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50403657 |
| Mode S Code Hex | A207AF |