| Tail Number / N-Number | N5121Z |
| Manufacturer | PIPER |
| Model | PA-22-108 |
| Year Built | 1961 |
| Manufacturer's Serial Number | 22-8762 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-235 SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 115 hp (86 kW) |
| Average Cruising Speed | 94 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | HILLMAN WILLIAM L |
| Other Names |
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| Street | 8592 IL ROUTE 75 E |
| City | ROCK CITY |
| State | IL |
| Zip Code | 61070-9533 |
| Region | Great Lakes |
| County | Stephenson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1961-07-10 |
| Certificate Issue Date | 1989-07-12 |
| Last Action Date | 2020-05-12 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 51465560 |
| Mode S Code Hex | A66B70 |