| Tail Number / N-Number | N21YK |
| Manufacturer | YAKOVLEV |
| Model | YAK 52 |
| Manufacturer's Serial Number | 9211609/01 |
| 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 | VEDENEYEV |
| Engine Model | M14P |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 350 hp (261 kW) |
| Type of Registrant | Individual |
| Owner Name | JAEGER WENDELL R |
| Street | 915 S 11TH AVE |
| City | WAUSAU |
| State | WI |
| Zip Code | 54401-5964 |
| Region | Great Lakes |
| County | Marathon County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2012-04-26 |
| Certificate Issue Date | 2022-06-09 |
| Last Action Date | 2022-06-09 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 50334531 |
| Mode S Code Hex | A1B959 |