| Type | D-Value (meters) | Perimeter 'D' Marking | Rotor diameter (metres) | Max weight (kg) | 't' value | Landing net size |
| EH 101 | 22.80 | 23 | 18.60 | 14600 | 14.6t | Large |
| SIKORSKY S61N | 23.80 | 24 | 18.90 | 9298 | 9.3t | Large |
| Sikorsky S92 | 20.88 | 21 | 17.17 | 12020 | 12.0t | Large |
| EC 225 | 19.50 | 20 | 16.20 | 11000 | 11.0t | Medium |
| Super Puma AS332/L2 | 19.50 | 20 | 16.20 | 9300 | 9.3t | Medium |
| Bell 214ST | 18.95 | 19 | 15.85 | 7936 | 8.0t | Medium |
| Super Puma AS332 | 18.70 | 19 | 15.00 | 8599 | 8.6t | Medium |
| EC 175 | 18.06 | 18 | 14.8 | 7800 | 7.8t | Medium |
| AW 189 | 17.60 | 18 | 14.60 | 8600 | 8.6t | Medium |
| Bell 212 | 17.46 | 17 | 14.63 | 5080 | 5.1t | Not Required |
| AW139 | 16.66 | 17 | 13.80 | 7000 | 6.4t | Medium |
| Sikorsky S76 | 16.00 | 16 | 13.40 | 5307 | 5.3t | Medium |
| EC 155 B1 | 14.30 | 14 | 12.60 | 4850 | 4.9t | Medium |
| Dauphin SA 365 N2 | 13.68 | 14 | 11.93 | 4250 | 4.3t | Small |
| Augusta A109 | 13.05 | 13 | 11.00 | 2600 | 2.6t | Small |
| Bolkow 117 | 13.00 | 13 | 11.00 | 3200 | 3.2t | Not Required |
| Bolkow BO 105 | 12.00 | 12 | 9.90 | 2400 | 2.4t | Not Required |