| Tail Number / N-Number | N3939L |
| Manufacturer | AEROVODOCHODY |
| Model | L-29 DELFIN |
| Year Built | 1957 |
| Manufacturer's Serial Number | 0902 |
| 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 | MOTORLET |
| Engine Model | M-701C |
| Engine Type | Turbo-jet |
| Number of Engines | 1 engine |
| Horsepower | 1,960 hp (1,462 kW) |
| Type of Registrant | Individual |
| Owner Name | NIEC STEVEN M |
| Street | 5107 E WILSON RD |
| City | CLIO |
| State | MI |
| Zip Code | 48420-9712 |
| Region | Great Lakes |
| County | Genesee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1994-07-22 |
| Certificate Issue Date | 2012-05-02 |
| Last Action Date | 2021-02-28 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 51110614 |
| Mode S Code Hex | A4918C |