| Tail Number / N-Number | N2521U |
| Manufacturer | PIPER |
| Model | PA-28-161 |
| Year Built | 1979 |
| Manufacturer's Serial Number | 28-8016029 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | LLC |
| Owner Name | N2521U LLC |
| Street | 3 DOGWOOD DR |
| City | DANBURY |
| State | CT |
| Zip Code | 06811-4530 |
| Region | New England |
| County | Fairfield County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1979-08-15 |
| Certificate Issue Date | 2017-06-02 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 50460572 |
| Mode S Code Hex | A2617A |