| Tail Number / N-Number | N646AC |
| Manufacturer | MOONEY |
| Model | M20R |
| Year Built | 1994 |
| Manufacturer's Serial Number | 29-0006 |
| 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 | IO-550 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | Co-Ownership |
| Owner Name | ZIMMERS HERBERT J |
| Other Names |
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| Street | 1620 E DEAN RD |
| City | FOX POINT |
| State | WI |
| Zip Code | 53217-2407 |
| Region | Great Lakes |
| County | Milwaukee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-08-15 |
| Certificate Issue Date | 1998-06-05 |
| Last Action Date | 2020-02-20 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 52075610 |
| Mode S Code Hex | A87B88 |