The location indicators marked with an asterisk (*) cannot be used in the address component of aeronautical fixed service (AFS) messages.
| 1. ENCODE |
|---|
| Location | Indicator |
|---|
| AL-UDAID AIR BASE | OTBH |
| DOHA FLIGHT INFORMATION REGION | OTDF |
| DOHA INTL | OTBD |
| DUKHAN AIR BASE | OTBT* |
| HAMAD INTL | OTHH |
| INTERNATIONAL NOTAM OFFICE | OTNO |
