| Tail Number / N-Number | N89HM |
| Manufacturer | MIESLER HANS |
| Model | RV 4 |
| Manufacturer's Serial Number | 1 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | MIESLER HANS U |
| Street | 2070 15TH ST |
| City | PENROSE |
| State | CO |
| Zip Code | 81240-9044 |
| Region | Northwest Mountain |
| County | Fremont County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1989-06-06 |
| Certificate Issue Date | 1988-11-04 |
| Last Action Date | 2021-05-27 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 53041666 |
| Mode S Code Hex | AC43B6 |