| Tail Number / N-Number | N644DD |
| Manufacturer | MOONEY |
| Model | M20J |
| Year Built | 1978 |
| Manufacturer's Serial Number | 24-0664 |
| 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 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 126 miles per hour |
| Type of Registrant | Partnership |
| Owner Name | ARFVIDSSON EMIL |
| Other Names |
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| Street | 74 YERBA SANTA AVE |
| City | LOS ALTOS |
| State | CA |
| Zip Code | 94022-2213 |
| Region | Western-Pacific |
| County | Santa Clara County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-07-28 |
| Certificate Issue Date | 2018-02-16 |
| Last Action Date | 2020-09-28 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 52072146 |
| Mode S Code Hex | A87466 |