| Tail Number / N-Number | N521EC |
| Manufacturer | GLENN C MATHIS JR |
| Model | RANS S-21 OUTBOUND |
| Manufacturer's Serial Number | 08220280 |
| 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) |
| Number of Engines | 1 engine |
| Kit Manufacturer | RANS DESIGNS INC |
| Kit Model | S-21 OUTBOUND |
| Type of Registrant | Individual |
| Owner Name | MATHIS GLENN C JR |
| Street | 11597 BARRELL ROLL TRL |
| City | FRANKSTON |
| State | TX |
| Zip Code | 75763-5278 |
| Region | Southwestern |
| County | Anderson County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2023-01-20 |
| Last Action Date | 2023-01-20 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 51506414 |
| Mode S Code Hex | A68D0C |