Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4251X.
| Tail Number / N-Number | N4251X |
| Manufacturer | ROCKWELL INTERNATIONAL |
| Model | S-2R |
| Manufacturer's Serial Number | 2033R |
| Aircraft Type | Fixed wing single engine |
| 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 | 1 engine |
| Average Cruising Speed | 82 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | RUHE SALES INC |
| Street | 122 COMMERCIAL |
| City | LEIPSIC |
| State | OH |
| Zip Code | 45856 |
| Country | US |
| Certificate Issue Date | 1980-02-21 |
| Last Action Date | 1992-05-19 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1992-06-10 |
| Mode S Code | 51210303 |
| Mode S Code Hex | A510C3 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4251X.
| Tail Number / N-Number | N4251X |
| Manufacturer | THOMPSON ELDON L |
| Model | KR 1 |
| Manufacturer's Serial Number | 4934 |
| Aircraft Type | Fixed wing single engine |
| 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 |
| Last Action Date | 1994-11-09 |
| Last Status | N-Number assigned as a Non Type Certificated (Amateur) but has not been registered that is pending cancellation |
| Cancellation Date | 2011-02-23 |
| Mode S Code | 51210303 |
| Mode S Code Hex | A510C3 |