| Tail Number / N-Number | N4990X |
| Manufacturer | ROCKWELL INTERNATIONAL |
| Model | S-2R |
| Year Built | 1975 |
| Manufacturer's Serial Number | 5035R |
| 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 | WRIGHT |
| Engine Model | C7BA SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 800 hp (597 kW) |
| Average Cruising Speed | 82 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SIMPSON DON DBA |
| Other Names |
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| Street | 5344 FM 50 |
| City | BRYAN |
| State | TX |
| Zip Code | 77807-6512 |
| Region | Southwestern |
| County | Brazos County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1979-11-29 |
| Certificate Issue Date | 2004-01-16 |
| Last Action Date | 2022-04-11 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51431765 |
| Mode S Code Hex | A633F5 |