| Tail Number / N-Number | N6999D |
| Manufacturer | MOONEY |
| Model | M20C |
| Year Built | 1964 |
| Manufacturer's Serial Number | 2705 |
| 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 | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 127 miles per hour |
| Type of Registrant | LLC |
| Owner Name | N6999D LLC |
| Street | 10922 OAKWOOD DR |
| City | FAIRFAX |
| State | VA |
| Zip Code | 22030-5252 |
| Region | Eastern |
| County | Fairfax city |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1964-04-28 |
| Certificate Issue Date | 2023-01-02 |
| Last Action Date | 2023-01-02 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 52247674 |
| Mode S Code Hex | A94FBC |