| Tail Number / N-Number | N91BG |
| Manufacturer | BURKHART GROB FLUGZEUGBAU |
| Model | G102 ASTIR CS |
| Manufacturer's Serial Number | 5529S |
| 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) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Co-Ownership |
| Owner Name | ANDREWS KENNETH S |
| Other Names |
|
| Street | 18900 15 MILE RD |
| City | CLINTON TOWNSHIP |
| State | MI |
| Zip Code | 48035-2502 |
| Region | Great Lakes |
| County | Oakland County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1981-09-21 |
| Certificate Issue Date | 2014-10-30 |
| Last Action Date | 2020-06-23 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 53112162 |
| Mode S Code Hex | AC9472 |