| Tail Number / N-Number | N4PU |
| Manufacturer | COOPER WALDEN A |
| Model | PITTS S1S |
| Year Built | 1982 |
| Manufacturer's Serial Number | P796-WC |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | RYBCZYNSKI DOUGLAS R |
| Street | 21620 GOLDEN HILLS BLVD UNIT B |
| City | GOLDEN HILLS |
| State | CA |
| Zip Code | 93561-8905 |
| Region | Western-Pacific |
| County | Kern County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-02-09 |
| Certificate Issue Date | 2022-07-06 |
| Last Action Date | 2023-01-03 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51124507 |
| Mode S Code Hex | A4A947 |