| Tail Number / N-Number | N399WS |
| Manufacturer | RAYTHEON AIRCRAFT COMPANY |
| Model | C90A |
| Year Built | 1999 |
| Manufacturer's Serial Number | LJ-1547 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 9 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W |
| Engine Model | PT6A SER |
| 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 | LLC |
| Owner Name | GUARDIAN FLIGHT LLC |
| Street | 10888 S 300 W |
| City | SOUTH JORDAN |
| State | UT |
| Zip Code | 84095-4043 |
| Region | Northwest Mountain |
| County | Salt Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1999-04-03 |
| Certificate Issue Date | 2017-10-02 |
| Last Action Date | 2020-08-25 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 51123075 |
| Mode S Code Hex | A4A63D |