| Tail Number / N-Number | N211MJ |
| Manufacturer | MOONEY |
| Model | M20R |
| Year Built | 1994 |
| Manufacturer's Serial Number | 29-0019 |
| 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 | LLC |
| Owner Name | KEEFER SQUARED LLC |
| Street | 765 VINSON MOUNTAIN RD |
| City | ROCKMART |
| State | GA |
| Zip Code | 30153-4707 |
| Region | Southern |
| County | Polk County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-12-09 |
| Certificate Issue Date | 2017-03-06 |
| Last Action Date | 2022-11-30 |
| Expiration Date | 2030-03-31 |
| Status | Valid Registration |
| Mode S Code | 50337125 |
| Mode S Code Hex | A1BE55 |