| Tail Number / N-Number | N685MK |
| Manufacturer | WACO CLASSIC AIRCRAFT |
| Model | YMF-F5C |
| Year Built | 2006 |
| Manufacturer's Serial Number | F5C-8-147 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | JACOBS |
| Engine Model | R-755A2M |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | Corporation |
| Owner Name | N685MK INC |
| Street | 704 N KING ST STE 500 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19801-3584 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2016-11-01 |
| Certificate Issue Date | 2017-05-09 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 52213347 |
| Mode S Code Hex | A916E7 |