| Tail Number / N-Number | N688GK |
| Manufacturer | SUTTON MARK D |
| Model | GLASAIR SUPER II-RG |
| Year Built | 2006 |
| Manufacturer's Serial Number | 2291 |
| 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 | MATTITUCK |
| Engine Model | TMX 360 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | GLASAIR AVIATION LLC |
| Kit Model | SUPER II-RG |
| Type of Registrant | Individual |
| Owner Name | SUTTON MARK D |
| Street | 107 PINTAIL WAY |
| City | LOCUST GROVE |
| State | GA |
| Zip Code | 30248-2528 |
| Region | Southern |
| County | Henry County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2006-12-09 |
| Certificate Issue Date | 2006-10-02 |
| Last Action Date | 2021-08-03 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 52220617 |
| Mode S Code Hex | A9218F |