| Tail Number / N-Number | N442RJ |
| Manufacturer | HEYMACH ROBERT F |
| Model | COZY MARK IV |
| Year Built | 2007 |
| Manufacturer's Serial Number | MK-0527 |
| 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 | O-360-A1D |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | HEYMACH ROBERT F |
| Street | 409 WALD ST |
| City | HOLBROOK |
| State | NY |
| Zip Code | 11741-2930 |
| Region | Eastern |
| County | Suffolk County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2007-08-01 |
| Certificate Issue Date | 2007-07-17 |
| Last Action Date | 2020-08-21 |
| Expiration Date | 2027-11-30 |
| Status | Valid Registration |
| Mode S Code | 51251613 |
| Mode S Code Hex | A5538B |