| Tail Number / N-Number | N221UM |
| Manufacturer | MIKOYAN GUREVICH |
| Model | MIG 21 UM |
| Year Built | 1983 |
| Manufacturer's Serial Number | 516999293 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | AVIATION CLASSICS LTD |
| Street | STEAD FIELD 4825 TEXAS AVE |
| City | RENO |
| State | NV |
| Zip Code | 89506-1237 |
| Region | Western-Pacific |
| County | Washoe County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2007-06-18 |
| Certificate Issue Date | 2018-11-15 |
| Last Action Date | 2021-06-16 |
| Expiration Date | 2028-11-30 |
| Status | Valid Registration |
| Mode S Code | 50363206 |
| Mode S Code Hex | A1E686 |