| Tail Number / N-Number | N391JB |
| Manufacturer | BROOKES JOHN |
| Model | DEFIANT |
| Year Built | 1991 |
| Manufacturer's Serial Number | 1111 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Not 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 | 2 engines |
| Horsepower per Engine | 180 hp (134 kW) |
| Total Horsepower | 360 hp (269 kW) |
| Type of Registrant | Individual |
| Owner Name | BARBER MARK E |
| Street | 2261 NE 44TH ST |
| City | LIGHTHOUSE POINT |
| State | FL |
| Zip Code | 33064 |
| Region | Southern |
| County | Broward County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1991-12-23 |
| Certificate Issue Date | 1994-08-17 |
| Last Action Date | 2021-06-02 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51103512 |
| Mode S Code Hex | A4874A |