| Tail Number / N-Number | N951SG |
| Manufacturer | JOHN S TODHUNTER |
| Model | SP-1 |
| Year Built | 2011 |
| Manufacturer's Serial Number | JST-003 |
| 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 | CONT MOTOR |
| Engine Model | A-65-8 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 65 hp (48 kW) |
| Type of Registrant | Individual |
| Owner Name | PROP & JET AIR MUSEUM |
| Street | 29665 PATELLI WAY |
| City | ROMOLAND |
| State | CA |
| Zip Code | 92585-9498 |
| Region | Western-Pacific |
| County | Riverside County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2011-10-01 |
| Certificate Issue Date | 2013-10-31 |
| Last Action Date | 2022-05-17 |
| Expiration Date | 2029-10-31 |
| Status | Valid Registration |
| Mode S Code | 53234765 |
| Mode S Code Hex | AD39F5 |