| Tail Number / N-Number | N129MR |
| Manufacturer | AEROVODOCHODY |
| Model | L-29 DELFIN |
| Manufacturer's Serial Number | 1234 |
| 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 | LLC |
| Owner Name | RACE55SH LLC |
| Street | 1600 STONEY LAKE DR |
| City | FRIENDSWOOD |
| State | TX |
| Zip Code | 77546-6126 |
| Region | Southwestern |
| County | Galveston County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1999-10-20 |
| Certificate Issue Date | 2022-08-09 |
| Last Action Date | 2022-08-09 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 50073104 |
| Mode S Code Hex | A07644 |