| Tail Number / N-Number | N121SB |
| Manufacturer | BOOKOUT BRENT |
| Model | AVID MKIV |
| Year Built | 1996 |
| Manufacturer's Serial Number | 1029D |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | SUBARU |
| Engine Model | ALL MDLS A/B |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 400 hp (298 kW) |
| Type of Registrant | Individual |
| Owner Name | BOOKOUT BRENT |
| Street | 16713 MILLWOOD WAY |
| City | BAKERSFIELD |
| State | CA |
| Zip Code | 93314-8224 |
| Region | Western-Pacific |
| County | Kern County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1996-05-24 |
| Certificate Issue Date | 2018-04-06 |
| Last Action Date | 2021-02-19 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 50054373 |
| Mode S Code Hex | A058FB |