| Tail Number / N-Number | N142LL |
| Manufacturer | MARTIN TOM |
| Model | HARMON ROCKET II |
| Year Built | 2001 |
| Manufacturer's Serial Number | 167 |
| 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 | 300 hp (224 kW) |
| Type of Registrant | LLC |
| Owner Name | HR II LLC |
| Street | 8 PERKINS DR |
| City | PRESCOTT |
| State | AZ |
| Zip Code | 86301-8458 |
| Region | Western-Pacific |
| County | Yavapai County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2005-05-16 |
| Certificate Issue Date | 2019-09-09 |
| Last Action Date | 2022-06-22 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 50125443 |
| Mode S Code Hex | A0AB23 |