| Tail Number / N-Number | N39WW |
| Manufacturer | BURKHART GROB FLUGZEUGBAU |
| Model | SPEED ASTIR II |
| Manufacturer's Serial Number | 4019 |
| Aircraft Type | Glider |
| 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 | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | FOWLER LARRY K |
| Street | 2671 LONE OAK DAIRY RD |
| City | HARRISON |
| State | AR |
| Zip Code | 72601-8531 |
| Region | Southwestern |
| County | Boone County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1980-10-17 |
| Certificate Issue Date | 2016-09-29 |
| Last Action Date | 2022-08-15 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 51101171 |
| Mode S Code Hex | A48279 |