ENR 3.5 — Other Routes
NIL
No other designated routes beyond those published in ENR 3.1 (Lower ATS Routes), ENR 3.2 (Upper ATS Routes), and ENR 3.3 (Area Navigation Routes) are currently in effect within the Damascus FIR.
This includes advisory routes (ADR), conditional routes (CDR), and any other route categories defined in ICAO Annex 11. Temporary route structures will be promulgated by NOTAM when applicable.
Advisory and Conditional Routes
| Route Type | Status | Notes |
|---|---|---|
| Advisory Routes (ADR) | NIL | Not currently established in OSTT FIR |
| Conditional Routes (CDR) | NIL | Flexible use of airspace not currently implemented |
| Direct Routings | Available | Subject to ATC clearance — request via flight plan Item 15 |
| RNAV Direct | Available | For RNAV-equipped aircraft with ATC approval |
When direct routings are not available, aircraft should plan via published ATS routes in ENR 3.1 (lower) or ENR 3.2 (upper). All route changes require ATC coordination.