Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N52SG.
| Tail Number / N-Number | N52SG |
| Manufacturer | O'BRIEN |
| Model | O'BRIEN 1 |
| Year Built | 1974 |
| Manufacturer's Serial Number | 1 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C90 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 95 hp (71 kW) |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ROBERSON ERROL D. |
| Street | PO BOX 2622 |
| City | KODIAK |
| State | AK |
| Zip Code | 99615 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-09-09 |
| Certificate Issue Date | 1986-08-25 |
| Last Action Date | 1992-08-29 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-01 |
| Mode S Code | 51504054 |
| Mode S Code Hex | A6882C |