Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N3981.
| Tail Number / N-Number | N3981 |
| Manufacturer | SCHLEICHER |
| Model | ASW-15 |
| Year Built | 1969 |
| Manufacturer's Serial Number | 15003 |
| 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) |
| Number of Engines | 0 engines |
| Average Cruising Speed | 60 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | CLAPP RAYMOND |
| Street | 1402 ASHMEADOW |
| City | HOUSTON |
| State | TX |
| Zip Code | 77090 |
| Region | Southwestern |
| Certificate Issue Date | 1976-12-13 |
| Last Status | Valid Registration |
| Cancellation Date | 1981-06-02 |
| Mode S Code | 51121374 |
| Mode S Code Hex | A4A2FC |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N3981.
| Tail Number / N-Number | N3981 |
| Manufacturer | G ELIAS BROTHERS INC |
| Model | E.C. 1 |
| Year Built | 1928 |
| Manufacturer's Serial Number | 401 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | NOVAK JERRY |
| Street | UNKNOWN |
| City | PERUVILLE |
| State | NY |
| Zip Code | 13032 |
| Region | Eastern |
| Certificate Issue Date | 1940-07-23 |
| Last Status | Valid Registration |
| Cancellation Date | 1956-03-30 |
| Mode S Code | 51121374 |
| Mode S Code Hex | A4A2FC |