| Tail Number / N-Number | N33421 |
| Manufacturer | PIPER |
| Model | J5A |
| Year Built | 1940 |
| Manufacturer's Serial Number | 5-510 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | A&C75 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 75 hp (56 kW) |
| Average Cruising Speed | 77 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | KOEMER AVIATION INC |
| Street | 1520 S STATE ROUTE 115 |
| City | KANKAKEE |
| State | IL |
| Zip Code | 60901-7792 |
| Region | Great Lakes |
| County | Kankakee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-14 |
| Certificate Issue Date | 2023-02-04 |
| Last Action Date | 2023-02-04 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 50723543 |
| Mode S Code Hex | A3A763 |