| Tail Number / N-Number | N21SK |
| Manufacturer | MCLAGAN WILLIAM |
| Model | AVENTURA UL |
| Year Built | 2006 |
| Manufacturer's Serial Number | APUA 0012 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | MCLAGAN WILLIAM D |
| Street | 5697 UMPQUA LN NE |
| City | ALBANY |
| State | OR |
| Zip Code | 97321-9014 |
| Region | Northwest Mountain |
| County | Linn County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2006-06-29 |
| Certificate Issue Date | 2005-03-08 |
| Last Action Date | 2022-07-19 |
| Expiration Date | 2029-10-31 |
| Status | Valid Registration |
| Mode S Code | 50334303 |
| Mode S Code Hex | A1B8C3 |