| Tail Number / N-Number | N3SZ |
| Manufacturer | HEARNE ROY A |
| Model | GLASAIR III |
| Year Built | 1989 |
| Manufacturer's Serial Number | 1 |
| 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 | LYCOMING |
| Engine Model | IO-540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Type of Registrant | Individual |
| Owner Name | WIEBENS PETER M |
| Street | 268 CASTLE HILL RANCH RD |
| City | WALNUT CREEK |
| State | CA |
| Zip Code | 94595-2709 |
| Region | Western-Pacific |
| County | Contra Costa County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1989-06-06 |
| Certificate Issue Date | 2012-04-03 |
| Last Action Date | 2020-11-13 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 50616110 |
| Mode S Code Hex | A31C48 |