| Tail Number / N-Number | N9048U |
| Manufacturer | SLINGSBY |
| Model | TYPE 21B SEDBERGH |
| Manufacturer's Serial Number | WB947 |
| Aircraft Type | Glider |
| 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) |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | CLOSSON LUKE E JR |
| Street | 1063 RIDGE RD |
| City | VALDOSTA |
| State | GA |
| Zip Code | 31605-5921 |
| Region | Southern |
| County | Lowndes County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1988-10-05 |
| Certificate Issue Date | 2012-04-14 |
| Last Action Date | 2020-11-16 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 53100613 |
| Mode S Code Hex | AC818B |