| Atak | 23 | 25.5 | |
| 2009 | 2007 | ||
| In-Flight-Weight | kg | 70 - 90 | 85 - 105 |
| Main-Use | Competition | Competition | |
| Certifications | |||
| Naked-Pilot | kg | 60 | 75 |
| Wing-Load | kg/m² | 3,5 | 3,7 |
| Wing-Weight | kg | 5,8 | 6,2 |
| Area | m² | 23,00 | 25,50 |
| Area proj | m² | 19,80 | 21,95 |
| Span | m | 12,23 | 12,88 |
| Span proj | m | 9,90 | 10,42 |
| Ratio | 6,50 | 6,50 | |
| Ratio proj | 4,94 | 4,94 | |
| Rows | 3 | 3 | |
| Boxes | 27 | 27 | |
| Cells | 75 | 75 | |
| Closed Cells | 8 | 8 | |
| Lines Ø diam. | 2,3 mm; 1,1 mm; 0,8 mm; 0,5 mm | 2,3 mm; 1,1 mm; 0,8 mm; 0,5 mm | |
| Lines distance | m | 8,11 | 8,54 |
| Lines total | m | 382 | 402 |
| Flattening | % | 14 | 14 |
| Accelerated speed | 60 km/h; 50 km/h | 60 km/h; 50 km/h | |
| Basic speed | km/h | 40 | 40 |
| Minimum speed | km/h | 25 | 25 |
| Best-Sink-Rate | m/s | 1,0 | 1,0 |
| Best-Glide-Ratio | 1,1 m/s - 39 km/h | 1,1 m/s - 39 km/h | |
| GR/Fmax Estimations | 9,6 - 9,9 (9,8 p) | 9,6 - 9,9 (9,8 p) | |
| Upper-Surface | S9092-E85A 45 g/m² | S9092-E85A 45 g/m² | |
| Under-Surface | S9017-E38A 40 g/m² | S9017-E38A 40 g/m² | |
| Lines type | Cousin; Technora | Cousin; Technora | |
| Risers | 3(3A/4B/3C) | 3(3A/4B/3C) | |
| Accelerator | Yes | Yes | |
| Trims | Yes | Yes | |
| Ears | Yes | Yes | |
| B Lines | Yes | Yes |