| Tail Number / N-Number | N521K |
| Manufacturer | GREAT LAKES/FRITZ JOE |
| Model | 2T-1A-2 |
| Year Built | 1998 |
| Manufacturer's Serial Number | 2JF |
| 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 | LYCOMING |
| Engine Model | I0360 SER A&C |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 200 hp (149 kW) |
| Type of Registrant | Individual |
| Owner Name | TAYLOR SCOTT M |
| Street | 5844 MORNINGSIDE AVE |
| City | SIOUX CITY |
| State | IA |
| Zip Code | 51106-3144 |
| Region | Central |
| County | Woodbury County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1998-07-04 |
| Certificate Issue Date | 2021-07-19 |
| Last Action Date | 2021-07-19 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51506606 |
| Mode S Code Hex | A68D86 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N521K.
| Tail Number / N-Number | N521K |
| Manufacturer | LOCKHEED |
| Model | 3 AIR EXPRESS |
| Manufacturer's Serial Number | 91 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | LOCKHEED AIRCRAFT CORP |
| Street | GENERAL DELIVERY |
| City | BURBANK |
| State | CA |
| Zip Code | 91501 |
| Region | Western-Pacific |
| County | Woodbury County |
| Certificate Issue Date | 1929-07-27 |
| Last Status | Valid Registration |
| Cancellation Date | 1930-07-22 |