| Tail Number / N-Number | N921G |
| Manufacturer | BURKHART GROB FLUGZEUGBAU |
| Model | G103 TWIN ASTIR |
| Year Built | 1982 |
| Manufacturer's Serial Number | 3741 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| 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 | Corporation |
| Owner Name | THERMALATOR SOARING ASSOCIATION LLC |
| Street | 3511 SILVERSIDE RD |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19810-4902 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1983-02-10 |
| Certificate Issue Date | 2013-06-19 |
| Last Action Date | 2022-02-15 |
| Expiration Date | 2029-06-30 |
| Status | Valid Registration |
| Mode S Code | 53141167 |
| Mode S Code Hex | ACC277 |