| Tail Number / N-Number | N81KW |
| Manufacturer | PITTS SPECIAL |
| Model | S1C |
| Year Built | 1971 |
| Manufacturer's Serial Number | JM-4-24-38-1 |
| 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 | 0-145B SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 65 hp (48 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HAMILTON ROBERT M |
| Street | 2448 CHAUCER AVE |
| City | OVERLAND |
| State | MO |
| Zip Code | 63114-1502 |
| Region | Central |
| County | St. Louis city |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2000-02-04 |
| Certificate Issue Date | 2013-01-15 |
| Last Action Date | 2021-10-12 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 52603771 |
| Mode S Code Hex | AB07F9 |