Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N7781S.
| Tail Number / N-Number | N7781S |
| Manufacturer | SCHWEIZER |
| Model | SGS 2-33A |
| Manufacturer's Serial Number | 151 |
| 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) |
| Number of Engines | 0 engines |
| Average Cruising Speed | 73 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KELLY ALLEN M |
| Street | 509 HIGHLAND ST |
| City | N MARSHFIELD |
| State | MA |
| Zip Code | 02059 |
| Region | New England |
| Certificate Issue Date | 1969-06-25 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-09-21 |
| Mode S Code | 52504513 |
| Mode S Code Hex | AA894B |