Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N557SX.
| Tail Number / N-Number | N557SX |
| Manufacturer | RUGGLES ROBERT |
| Model | SONEX |
| Year Built | 2006 |
| Manufacturer's Serial Number | 0557 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Kit Manufacturer | SONEX LTD |
| Kit Model | SONEX |
| Type of Registrant | Individual |
| Owner Name | WREN RONNIE D |
| Street | 4819 FM 1553 |
| City | LEONARD |
| State | TX |
| Zip Code | 75452-6926 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2006-02-27 |
| Certificate Issue Date | 2007-06-29 |
| Last Action Date | 2010-06-15 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2010-07-27 |
| Mode S Code | 51615422 |
| Mode S Code Hex | A71B12 |