| Tail Number / N-Number | N521WB |
| Manufacturer | HAWKER BEECHCRAFT CORP |
| Model | C90GTI |
| Year Built | 2007 |
| Manufacturer's Serial Number | LJ-1847 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PT6A-135A |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 750 hp (560 kW) |
| Total Horsepower | 1,500 hp (1,119 kW) |
| Type of Registrant | Corporation |
| Owner Name | XPRESS TECHNICAL SERVICES INC |
| Street | 4901 WAREHOUSE WAY |
| City | SACRAMENTO |
| State | CA |
| Zip Code | 95826-4905 |
| Region | Western-Pacific |
| County | Sacramento County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2007-12-26 |
| Certificate Issue Date | 2022-12-21 |
| Last Action Date | 2022-12-21 |
| Expiration Date | 2029-12-31 |
| Status | Valid Registration |
| Mode S Code | 51507233 |
| Mode S Code Hex | A68E9B |