| Tail Number / N-Number | N4521Y |
| Manufacturer | PIPER |
| Model | PA-25-235 |
| Year Built | 1966 |
| Manufacturer's Serial Number | 25-4072 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-540 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KRON HOWARD H |
| Street | 3010 90TH AVE SE |
| City | CLARA CITY |
| State | MN |
| Zip Code | 56222-1012 |
| Region | Great Lakes |
| County | Chippewa County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1966-12-12 |
| Certificate Issue Date | 1991-04-30 |
| Last Action Date | 2020-03-17 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 51276034 |
| Mode S Code Hex | A57C1C |