| Abbreviation | Definition |
|---|---|
| HSSM | Malakal, Sudan |
| HSSP | Port Sudan, Sudan |
| HSSS | Khartoum Inteirnational Airpor, Sudan |
| HSSW | Wadi Halfa-Nuba Lake, Sudan |
| HSTO | Tong, Sudan |
| HSTR | Torit, Sudan |
| HSTU | Tumbura, Sudan |
| HSV | Huntsville/ Decatur, Alabama USA |
| HSWW | Wau, Sudan |
| HSYA | Yambio, Sudan |
| HSYE | Yei, Sudan |
| HSYL | Yirol, Sudan |
| HSZA | Zalingei, Sudan |
| HTA | Chita, Russia |
| HTAR | Arusha, Tanzania |
| HTB | Terre-De-Bas, Guadeloupe |
| HTBU | Bukoba, Tanzania |
| HTDA | Dar es Salaam, Tanzania |
| HTDO | Dodoma, Tanzania |
| HTF | Hatfield, England |