| Tail Number / N-Number | N290MU |
| Manufacturer | JAMES J MUELLER |
| Model | MUELLER 90 |
| Year Built | 2017 |
| Manufacturer's Serial Number | 2016-90 |
| Aircraft Type | Balloon |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | MUELLER JAMES J |
| Street | 1545 18TH ST NW UNIT 916 |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20036-1396 |
| Region | Eastern |
| County | District of Columbia |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2017-06-24 |
| Certificate Issue Date | 2017-03-14 |
| Last Action Date | 2022-10-24 |
| Expiration Date | 2030-03-31 |
| Status | Valid Registration |
| Mode S Code | 50573240 |
| Mode S Code Hex | A2F6A0 |