OSTT/Damascus FIR open for overflight with procedural control and operational restrictions in effect.

A0127/26

EST

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ASPAirspace Restrictions

2026-04-09 02:45 - 2026-05-31 23:59

Duration:2 months EST

Period of Applicability

2026-04-09 02:45 - 2026-05-31 23:59

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Interpretation

Damascus FIR (OSTT) is open for overflight with the following conditions: air traffic services are provided using procedural control with no radar separation; transferring ATS units must apply a minimum of 10 minutes longitudinal separation for aircraft on the same track at the same level; inbound traffic must contact Damascus ACC at least 5 minutes before the FIR boundary; outbound traffic must contact the next ATS unit at least 5 minutes before the boundary; traffic flow may be regulated due to ATC capacity; flights must have operational ACAS II; SLOP per ICAO Doc 4444 is recommended; aircraft must maintain the last assigned SSR code, or squawk 2000 if none assigned; and pilots must maintain a listening watch on 121.5 MHz in addition to the assigned frequency.

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Raw NOTAM

A0127/26 NOTAMR A0126/26    
Q) OSTT/QAFXX/IV/NBO/E/000/999/330000N0360000E   
A) OSTT   
B) 2604090245   
C) 2605312359 EST   
E) DAMASCUS FIR OSTT IS OPEN FOR OVERFLIGHT OPERATIONS    
SUBJECT TO THE FOLLOWING CONDITIONS:  
-AIR TRAFFIC SERVICES ARE PROVIDED USING PROCEDURAL    
CONTROL.RADAR SEPARATION NOT AVAILABLE.    
-TRANSFERRING ATS UNITS SHALL APPLY A MINIMUM OF 10 MINUTES    
LONGITUDINAL SEPARTION BETWEEN AIRCRAFT ON THE SAME TRACK    
AT THE SAME LEVEL.    
-FOR TRAFFIC INBOUND TO DAMASCUS FIR, PILOTS SHALL ESTABLISH    
COMMUNICATION WITH DAMASCUS ACC AT LEAST 5 MINUTES PRIOR TO    
FIR BOUNDARY FOR IDENTIFICATION PURPOSES.    
-FOR TRAFFIC LEAVING DAMASCUS FIR, PILOTS SHALL ESTABLISH    
COMMUNICATION WITH THE NEXT ATS UNIT AT LEAST 5 MINUTES    
PRIOR TO FIR BOUNDARY.    
-FLOW OF TRAFFIC WITHIN DAMASCUS FIR IS SUBJECT TO ATC CAPACITY    
AND MAY BE REGULATED.    
-FLIGHTS OPERATING WITHIN DAMASCUS FIR SHALL HAVE OPERATIONAL ACAS
II.
-STRATEGIC LATERAL OFFSET PROCEDURE SLOP IN ACCORDANCE WITH    
ICAO DOC 4444 IS RECOMMENDED.    
-AIRCRAFT SHALL MAINTAIN THE LAST ASSIGNED SSR CODE. IF NO CODE    
IS ASSIGNED, SQUAWK 2000 UNTIL FURTHER INSTRUCTION.    
-PILOTS SHALL MAINTAIN CONTINUOUS LISTENING WATCH ON 121.5 MHZ    
IN ADDITION TO ASSIGNED ATC FREQUENCY .

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