| Tail Number / N-Number | N31CZ |
| Manufacturer | HULL JOSEPH A |
| Model | COZY-MK-4 |
| Year Built | 2006 |
| Manufacturer's Serial Number | 0991 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | HEYMAN EDWARD R |
| Street | 5213 NARBECK AVE |
| City | EVERETT |
| State | WA |
| Zip Code | 98203-1549 |
| Region | Northwest Mountain |
| County | Snohomish County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2006-01-20 |
| Certificate Issue Date | 2018-12-11 |
| Last Action Date | 2021-07-13 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 50642302 |
| Mode S Code Hex | A344C2 |