| 'Grob G103 Twin Astir' | |
| Seats: | 2 |
| Wingspan: | 17.5 meter / 57.4 feet |
| Empty Weight: | 309 Kg / 680 lb |
| Payload: | 286 Kg / 629 lb |
| Structure: | Fiberglass |
| Max Glide Ratio: | 38 @ 59 kts / 68 mph / 109 km/h |
| Minimum Sink: | 0.68 m/s / 2.23 fps @ 43 kts / 49 mph / 80 km/h |
| Stall Speed: | x |
| Maximum Speed: | x |
| G +/-: | x |
| Produced in: | 1980's |