| Tail Number / N-Number | N550BK |
| Manufacturer | YAKOVLEV |
| Model | YAK-50 |
| Year Built | 1985 |
| Manufacturer's Serial Number | 822303 |
| 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 | VEDENEYEV |
| Engine Model | M14-PF |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 400 hp (298 kW) |
| Type of Registrant | Partnership |
| Owner Name | KOSEK BRADLEY |
| Other Names |
|
| Street | 4801 BRIDGE ST |
| City | SOQUEL |
| State | CA |
| Zip Code | 95073-2202 |
| Region | Western-Pacific |
| County | Santa Cruz County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2019-07-18 |
| Certificate Issue Date | 2019-06-25 |
| Last Action Date | 2022-01-14 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 51577616 |
| Mode S Code Hex | A6FF8E |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N550BK.
| Tail Number / N-Number | N550BK |
| Manufacturer | ROBERDS KENNETH A |
| Model | RANS S-12 |
| Manufacturer's Serial Number | 0295559 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Co-Ownership |
| Owner Name | ROBERDS KENNETH A |
| Other Names |
|
| Street | 4013 HAY TER |
| City | FORT SMITH |
| State | AR |
| Zip Code | 72916 |
| County | Santa Cruz County |
| Country | US |
| Certificate Issue Date | 1995-07-07 |
| Last Action Date | 1995-07-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1998-04-03 |