| Tail Number / N-Number | N438WF |
| Manufacturer | FULLER W DOUG |
| Model | KFIV |
| Year Built | 2011 |
| Manufacturer's Serial Number | HCU088 |
| 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 | ROTAX |
| Engine Model | 912 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 80 hp (60 kW) |
| Type of Registrant | Individual |
| Owner Name | FULLER WM DOUGLAS |
| Street | 1624 E MELODY ST |
| City | BOISE |
| State | ID |
| Zip Code | 83706-5010 |
| Region | Northwest Mountain |
| County | Ada County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2011-06-07 |
| Certificate Issue Date | 2011-05-03 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 51241320 |
| Mode S Code Hex | A542D0 |