| Tail Number / N-Number | N8631R |
| Manufacturer | SCHWEIZER |
| Model | SGS 1-23H |
| Year Built | 1962 |
| Manufacturer's Serial Number | 60 |
| 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 |
| Average Cruising Speed | 58 miles per hour |
| Type of Registrant | Individual |
| Owner Name | YAKUBEK CHRISTOPHER P |
| Street | 6545 EXETER DR |
| City | OAKLAND |
| State | CA |
| Zip Code | 94611-1641 |
| Region | Western-Pacific |
| County | Alameda County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1962-10-17 |
| Certificate Issue Date | 2011-12-07 |
| Last Action Date | 2020-07-18 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 52756207 |
| Mode S Code Hex | ABDC87 |