Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4221X.
| Tail Number / N-Number | N4221X |
| Manufacturer | ROCKWELL INTERNATIONAL |
| Model | S-2R |
| Year Built | 1974 |
| Manufacturer's Serial Number | 1980R |
| 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) |
| Engine Manufacturer | P&W |
| Engine Model | R1340 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 600 hp (448 kW) |
| Average Cruising Speed | 82 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73100 |
| Country | US |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1974-05-30 |
| Last Action Date | 1985-08-14 |
| Last Status | Sale Reported – Pending Cancellation |
| Cancellation Date | 2012-08-07 |
| Mode S Code | 51202636 |
| Mode S Code Hex | A5059E |