| Tail Number / N-Number | N6399X |
| Manufacturer | BIGGERSTAFF PAUL E |
| Model | BIGGERSTAFF 16X |
| Year Built | 2000 |
| Manufacturer's Serial Number | H2-967-237 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | SUBARU |
| Engine Model | ALL MDLS A/B |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 400 hp (298 kW) |
| Type of Registrant | Individual |
| Owner Name | BIGGERSTAFF PAUL E |
| Street | PO BOX 104 |
| City | WOOSUNG |
| State | IL |
| Zip Code | 61091-0104 |
| Region | Great Lakes |
| County | Ogle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2000-02-20 |
| Certificate Issue Date | 2000-03-31 |
| Last Action Date | 2022-11-30 |
| Expiration Date | 2030-04-30 |
| Status | Valid Registration |
| Mode S Code | 52061324 |
| Mode S Code Hex | A862D4 |