Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N5439X.
| Tail Number / N-Number | N5439X |
| Manufacturer | NORTH AMERICAN |
| Model | T-28B |
| Year Built | 1956 |
| Manufacturer's Serial Number | 137743 |
| 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) |
| Engine Manufacturer | WRIGHT |
| Engine Model | R-1820 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 1,475 hp (1,100 kW) |
| Average Cruising Speed | 208 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | NA64 YALE FOUNDATION INC |
| Street | 31111 US 19 N |
| City | PALM HARBOR |
| State | FL |
| Zip Code | 34684 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2002-05-23 |
| Certificate Issue Date | 2002-06-11 |
| Last Action Date | 2005-05-17 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2008-04-02 |
| Exported To | AUSTRALIA |
| Mode S Code | 51563272 |
| Mode S Code Hex | A6E6BA |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N5439X.
| Tail Number / N-Number | N5439X |
| Manufacturer | CESSNA |
| Model | U206G |
| Manufacturer's Serial Number | U20605755 |
| Aircraft Type | Fixed wing single 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 | 1 engine |
| Average Cruising Speed | 132 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AIRMEN INC |
| Street | 1700 LEXINGTON |
| City | NORMAN |
| State | OK |
| Zip Code | 73069 |
| Region | Southwestern |
| Certificate Issue Date | 1980-09-16 |
| Last Status | Valid Registration |
| Cancellation Date | 1981-01-16 |
| Exported To | CANADA |
| Mode S Code | 51563272 |
| Mode S Code Hex | A6E6BA |