| Tail Number / N-Number | N129DD |
| Manufacturer | DRUCKENBRODT DONALD D |
| Model | LONG EZ |
| Manufacturer's Serial Number | 1393 |
| 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 | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | DRUCKENBRODT DONALD D |
| Street | 1903 AVIATION LOOP |
| City | FREDERICKSBURG |
| State | TX |
| Zip Code | 78624-7773 |
| Region | Southwestern |
| County | Gillespie County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1990-03-23 |
| Certificate Issue Date | 2015-07-28 |
| Last Action Date | 2021-07-21 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50072560 |
| Mode S Code Hex | A07570 |