Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N51868.
| Tail Number / N-Number | N51868 |
| Manufacturer | YOUNG |
| Model | BENSEN B-8M |
| Manufacturer's Serial Number | RAY-1 |
| Aircraft Type | Rotorcraft |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | YOUNG ROGER A |
| Street | 6713 BRIARCROFT ST |
| City | CLIFTON |
| State | VA |
| Zip Code | 22024 |
| Country | US |
| Certificate Issue Date | 1978-02-09 |
| Last Action Date | 1978-02-11 |
| Last Status | Revoked – Canceled |
| Cancellation Date | 2012-09-20 |
| Mode S Code | 51501162 |
| Mode S Code Hex | A68272 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N51868.
| Tail Number / N-Number | N51868 |
| Manufacturer | DOUGLAS |
| Model | C54A-DC |
| Manufacturer's Serial Number | 7481 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 60 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 4 engines |
| Average Cruising Speed | 173 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | TWENTIETH CENTURY AIRCRAFT INC |
| Certificate Issue Date | 1954-07-28 |
| Last Status | Valid Registration |
| Cancellation Date | 1956-10-15 |
| Exported To | CANADA |
| Mode S Code | 51501162 |
| Mode S Code Hex | A68272 |