| Tail Number / N-Number | N666BJ |
| Manufacturer | JUDY LOUIS B |
| Model | JUDY MONO SPORT |
| Year Built | 1988 |
| Manufacturer's Serial Number | 002 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | IO-360 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 200 hp (149 kW) |
| Type of Registrant | Individual |
| Owner Name | HEFEL ANTHONY J |
| Street | 15510 E LYNNWOOD ST |
| City | WICHITA |
| State | KS |
| Zip Code | 67230-6431 |
| Region | Central |
| County | Sedgwick County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2012-04-20 |
| Certificate Issue Date | 2015-04-23 |
| Last Action Date | 2020-11-09 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 52145245 |
| Mode S Code Hex | A8CAA5 |