| Tail Number / N-Number | N4XK |
| Manufacturer | KELLER FREDERICK H |
| Model | FK 1 STOL |
| Year Built | 1989 |
| Manufacturer's Serial Number | 001 |
| 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Co-Ownership |
| Owner Name | ELLIOTT ROBERT E III |
| Other Names |
|
| Street | 2500 FRANKLIN ST |
| City | VANCOUVER |
| State | WA |
| Zip Code | 98660-2555 |
| Region | Northwest Mountain |
| County | Clark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1989-06-26 |
| Certificate Issue Date | 2019-07-15 |
| Last Action Date | 2022-02-15 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51125006 |
| Mode S Code Hex | A4AA06 |