| Tail Number / N-Number | N51129 |
| Manufacturer | PIPER |
| Model | J3C-65 |
| Year Built | 1942 |
| Manufacturer's Serial Number | 8208 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | A&C65 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 65 hp (48 kW) |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | LLC |
| Owner Name | SPANDAU AIR FORCE LLC |
| Street | 1184 HOLLOW RD |
| City | CLINTON CORNERS |
| State | NY |
| Zip Code | 12514-2213 |
| Region | Eastern |
| County | Dutchess County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-03-09 |
| Certificate Issue Date | 2019-05-23 |
| Last Action Date | 2021-12-16 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 51463746 |
| Mode S Code Hex | A667E6 |