Alpavia RF-3 vs MACDONALD S-21
Side-by-side aircraft model specifications (max across variants).
| Spec | Alpavia RF-3 | MACDONALD S-21 |
|---|---|---|
| ICAO type | RF3 | S21 |
| MTOW | 400 kg | 400 kg |
| Range | 280 nm | 250 nm |
| Cruise speed | 95 kt | 78 kt |
| Service ceiling | 16,500 ft | — |
| Max seats | 1 | 1 |
| Length | 6 m | 6 m |
| Wingspan | 11 m | 8 m |
Alpavia RF-3
MACDONALD S-21