| Tail Number / N-Number | N439ML |
| Manufacturer | AERO VODOCHODY |
| Model | L-39ZO |
| Year Built | 1979 |
| Manufacturer's Serial Number | 731020 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | GREATEST GENERATION NAVAL MUSEUM |
| Street | 755 AVIATION WAY |
| City | COLORADO SPRINGS |
| State | CO |
| Zip Code | 80916-2740 |
| Region | Northwest Mountain |
| County | El Paso County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2011-04-11 |
| Certificate Issue Date | 2013-01-11 |
| Last Action Date | 2021-12-13 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 51242653 |
| Mode S Code Hex | A545AB |