| Tail Number / N-Number | N139ES |
| Manufacturer | AERO VODOCHODY |
| Model | L39C |
| Year Built | 1980 |
| Manufacturer's Serial Number | 031624 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | IVCHENKO |
| Engine Model | AI-25TL |
| Engine Type | Turbo-fan |
| Number of Engines | 1 engine |
| Thrust | 3,792 pounds-force (16.9 kN) |
| Type of Registrant | Individual |
| Owner Name | HALE MARK |
| Street | 580 PENNY LN |
| City | MOUNTAIN VIEW |
| State | CA |
| Zip Code | 94043-2997 |
| Region | Western-Pacific |
| County | Santa Clara County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2015-01-22 |
| Certificate Issue Date | 2012-09-14 |
| Last Action Date | 2021-04-11 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50116425 |
| Mode S Code Hex | A09D15 |