| Tail Number / N-Number | N423CZ |
| Manufacturer | ESSELSTYN CHRIS |
| Model | COZY |
| Manufacturer's Serial Number | 423 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 3 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 | Corporation |
| Owner Name | RUTAN AIRCRAFT FLYING EXPERIENCE |
| Street | 33222 ROCHEN RD |
| City | WALLER |
| State | TX |
| Zip Code | 77484-7563 |
| Region | Southwestern |
| County | Waller County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1991-07-09 |
| Certificate Issue Date | 2022-05-25 |
| Last Action Date | 2022-05-25 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 51203416 |
| Mode S Code Hex | A5070E |