| Tail Number / N-Number | N159SS |
| Manufacturer | BURKHART GROB FLUGZEUGBAU |
| Model | TWIN ASTIR |
| Year Built | 1978 |
| Manufacturer's Serial Number | 3220 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 0 engines |
| Type of Registrant | Corporation |
| Owner Name | SILVER CREEK GLIDER CLUB |
| Street | 7410 ROCKWELL RD |
| City | NEW DOUGLAS |
| State | IL |
| Zip Code | 62074-2204 |
| Region | Great Lakes |
| County | Madison County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1979-03-08 |
| Certificate Issue Date | 2013-01-25 |
| Last Action Date | 2021-08-25 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 50166477 |
| Mode S Code Hex | A0ED3F |