| Tail Number / N-Number | N91861 |
| Manufacturer | SCHWEIZER |
| Model | SGS 1-21 |
| Manufacturer's Serial Number | 2 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Not 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 |
| Average Cruising Speed | 60 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SHORT JAMES B |
| Street | 1044 CONCORDIA LN |
| City | CROWN POINT |
| State | IN |
| Zip Code | 46307-7598 |
| Region | Great Lakes |
| County | Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1985-10-28 |
| Certificate Issue Date | 2007-06-15 |
| Last Action Date | 2020-02-14 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 53133647 |
| Mode S Code Hex | ACB7A7 |