| Tail Number / N-Number | N21UT |
| Manufacturer | MIKOYAN GUREVICH |
| Model | MIG 21 UM |
| Year Built | 1974 |
| Manufacturer's Serial Number | 3046 |
| 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 | Individual |
| Owner Name | RILEY JACOB |
| Street | 200 W 54TH ST APT 9D |
| City | NEW YORK |
| State | NY |
| Zip Code | 10019-5567 |
| Region | Eastern |
| County | New York County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1998-01-09 |
| Certificate Issue Date | 2019-12-30 |
| Last Action Date | 2022-08-02 |
| Expiration Date | 2029-12-31 |
| Status | Valid Registration |
| Mode S Code | 50334375 |
| Mode S Code Hex | A1B8FD |