Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N2639Z.
| Tail Number / N-Number | N2639Z |
| Manufacturer | CESSNA |
| Model | 310R |
| Year Built | 1979 |
| Manufacturer's Serial Number | 310R1673 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | DUNCAN AVIATION INC |
| Street | PO BOX 81887 |
| City | LINCOLN |
| State | NE |
| Zip Code | 68501 |
| Region | Central |
| Country | US |
| Certificate Issue Date | 1979-12-04 |
| Last Status | Valid Registration |
| Cancellation Date | 1980-07-08 |
| Exported To | CANADA |
| Mode S Code | 50506715 |
| Mode S Code Hex | A28DCD |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N2639Z.
| Tail Number / N-Number | N2639Z |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Manufacturer's Serial Number | 0772 |
| Aircraft Type | Rotorcraft |
| 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 | 1 engine |
| Last Status | Aircraft registered to the manufacturer under their Dealer Certificate |
| Cancellation Date | 1988-03-17 |
| Mode S Code | 50506715 |
| Mode S Code Hex | A28DCD |