| Tail Number / N-Number | N557MB |
| Manufacturer | JAMES M BROWN |
| Model | PHANTOM X1 |
| Year Built | 2021 |
| Manufacturer's Serial Number | 578 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | HKS |
| Engine Model | 700E |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 60 hp (45 kW) |
| Kit Manufacturer | ULTRALIGHT FLIGHT INC |
| Kit Model | PHANTOM X1 |
| Type of Registrant | Individual |
| Owner Name | BROWN JAMES M |
| Street | 1007 WALTERS MILL RD |
| City | MONROE |
| State | NC |
| Zip Code | 28112-8983 |
| Region | Eastern |
| County | Union County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2022-05-09 |
| Certificate Issue Date | 2022-04-06 |
| Last Action Date | 2022-04-06 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51615201 |
| Mode S Code Hex | A71A81 |