| Tail Number / N-Number | N5777S |
| Manufacturer | SCHWEIZER |
| Model | SGS 1-26B |
| Year Built | 1968 |
| Manufacturer's Serial Number | 393 |
| 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 | Corporation |
| Owner Name | MASSEY AIR MUSEUM INC |
| Street | 33541 MARYLAND LINE RD |
| City | MASSEY |
| State | MD |
| Zip Code | 21650-1712 |
| Region | Eastern |
| County | Kent County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1968-04-29 |
| Certificate Issue Date | 2017-11-15 |
| Last Action Date | 2020-06-14 |
| Expiration Date | 2027-11-30 |
| Status | Valid Registration |
| Mode S Code | 51665710 |
| Mode S Code Hex | A76BC8 |