| Tail Number / N-Number | N31HR |
| Manufacturer | EWING JIM |
| Model | HARMON ROCKET |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 | I0360 SER A&C |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 200 hp (149 kW) |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | 136 FAIRWAY DR |
| City | MISSOULA |
| State | MT |
| Zip Code | 59803-2405 |
| Region | Northwest Mountain |
| County | Missoula County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1987-06-06 |
| Last Action Date | 2023-02-10 |
| Status | Sale reported |
| Mode S Code | 50642467 |
| Mode S Code Hex | A34537 |