| Tail Number / N-Number | N4521G |
| Manufacturer | QUAD CITY ULTRALIGHT ACFT CORP |
| Model | CHALLENGER I |
| Year Built | 1995 |
| Manufacturer's Serial Number | 0295 0550 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Light Sport |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTAX |
| Engine Model | 447 |
| Engine Type | 2 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 40 hp (30 kW) |
| Type of Registrant | Individual |
| Owner Name | NEVERS JAMES L |
| Street | 524 DUNN RD |
| City | FAYETTEVILLE |
| State | NC |
| Zip Code | 28312-5234 |
| Region | Eastern |
| County | Cumberland County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-01-29 |
| Certificate Issue Date | 2008-01-29 |
| Last Action Date | 2021-11-17 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51276014 |
| Mode S Code Hex | A57C0C |