| Tail Number / N-Number | N9129X |
| Manufacturer | MOONEY |
| Model | M20J |
| Year Built | 1994 |
| Manufacturer's Serial Number | 24-3347 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | I0360 SER A&C |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 200 hp (149 kW) |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MIRABELLI MARCELLO F |
| Street | 10 MAGNOLIA CT |
| City | OCEAN VIEW |
| State | NJ |
| Zip Code | 08230-1380 |
| Region | Eastern |
| County | Cape May County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-09-08 |
| Certificate Issue Date | 1999-09-27 |
| Last Action Date | 2021-02-15 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 53120702 |
| Mode S Code Hex | ACA1C2 |