| Tail Number / N-Number | N121GX |
| Manufacturer | REMOS ACFT GMBH FLUGZEUGBAU |
| Model | REMOS GX |
| Year Built | 2009 |
| Manufacturer's Serial Number | 317 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Light Sport |
| 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) |
| Type of Registrant | Individual |
| Owner Name | KING SHELDON E |
| Street | 3371 S OWENS CT |
| City | LAKEWOOD |
| State | CO |
| Zip Code | 80227-4226 |
| Region | Northwest Mountain |
| County | Denver County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Light Sport |
| Airworthiness Date | 2009-07-23 |
| Certificate Issue Date | 2014-01-14 |
| Last Action Date | 2022-08-13 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 50054025 |
| Mode S Code Hex | A05815 |