| Tail Number / N-Number | N399TW |
| Manufacturer | BEECH |
| Model | F90 |
| Year Built | 1983 |
| Manufacturer's Serial Number | LA-203 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 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 | ARX AIR LLC |
| Street | 6143 GROSVENOR SHORE DR |
| City | WINDERMERE |
| State | FL |
| Zip Code | 34786-5660 |
| Region | Southern |
| County | Orange County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2000-01-28 |
| Certificate Issue Date | 2012-02-03 |
| Last Action Date | 2020-10-19 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 51122766 |
| Mode S Code Hex | A4A5F6 |