| Tail Number / N-Number | N404TK |
| Manufacturer | BLACKBURN KENNETH |
| Model | ULTRA PUP L-4 |
| Manufacturer's Serial Number | 9885 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | BLACKBURN KENNETH |
| Street | 2035 NW 146TH PL |
| City | CITRA |
| State | FL |
| Zip Code | 32113-3591 |
| Region | Southern |
| County | Marion County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-09-07 |
| Certificate Issue Date | 2010-03-08 |
| Last Action Date | 2022-09-20 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 51136460 |
| Mode S Code Hex | A4BD30 |