| Tail Number / N-Number | N304JE |
| Manufacturer | EILER JOHN EDWARD |
| Model | HARMON ROCKET II |
| Year Built | 2007 |
| Manufacturer's Serial Number | 321 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 | IO 540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Kit Manufacturer | HARMON ROCKET LLC |
| Kit Model | HARMON ROCKET II |
| Type of Registrant | Individual |
| Owner Name | EILER JOHN EDWARD |
| Street | 1991 CATALINA DR |
| City | JACKSON |
| State | MI |
| Zip Code | 49201-8953 |
| Region | Great Lakes |
| County | Jackson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2022-05-18 |
| Certificate Issue Date | 2007-09-27 |
| Last Action Date | 2021-02-16 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 50627373 |
| Mode S Code Hex | A32EFB |