| Tail Number / N-Number | N104MK |
| Manufacturer | KUNTZ MARK T |
| Model | CHALLENGER II |
| Year Built | 2014 |
| Manufacturer's Serial Number | CH2-0312-LSS-0208 |
| 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 | 503 DCDI |
| Engine Type | 2 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 52 hp (39 kW) |
| Kit Manufacturer | QUAD CITY ULTRALIGHT ACFT CORP |
| Kit Model | CHALLENGER II |
| Type of Registrant | LLC |
| Owner Name | RAGEN CAROLINE FARMS LLC |
| Street | 900 COUNTY ROAD 702 |
| City | JONESBORO |
| State | AR |
| Zip Code | 72405-8592 |
| Region | Southwestern |
| County | Craighead County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2014-11-01 |
| Certificate Issue Date | 2019-12-17 |
| Last Action Date | 2019-12-17 |
| Expiration Date | 2022-12-31 |
| Status | Third Notice for Registration Renewal |
| Mode S Code | 50012255 |
| Mode S Code Hex | A014AD |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N104MK.
| Tail Number / N-Number | N104MK |
| Manufacturer | BEECH |
| Model | 58 |
| Manufacturer's Serial Number | TH1401 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 165 miles per hour |
| County | Craighead County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1990-08-15 |