| Tail Number / N-Number | N121FW |
| Manufacturer | WEMMERING JEFFREY LYNN |
| Model | S-7S |
| Manufacturer's Serial Number | 0907484 |
| 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 | ROTAX |
| Engine Model | 912ULS SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | RANS INC |
| Kit Model | S7-S |
| Type of Registrant | Individual |
| Owner Name | STILLMAN DAVID A |
| Street | 355 W 1450 N |
| City | AMERICAN FORK |
| State | UT |
| Zip Code | 84003-2796 |
| Region | Northwest Mountain |
| County | Utah County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2009-08-13 |
| Certificate Issue Date | 2022-02-24 |
| Last Action Date | 2022-02-24 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50053773 |
| Mode S Code Hex | A057FB |