ENR 1.4 ATS AIRSPACE CLASSIFICATION AND DESCRIPTION
1. General
ICAO has indicated that States are required to select the classes of ATS airspace that best fit their needs. The following classes have been selected for application within Damascus FIR:
- CLASS A — Replaces "instrument restricted airspace". Includes all controlled airspace at FL150 and above.
- CLASS B — Replaces "visual exempted airspace". Includes all controlled airspace below FL150.
Classifications of other airspace are undefined because they are not used by civil aircraft.
2. REQUIREMENTS FOR FLIGHTS
The requirements for flights within each class of airspace are as shown in the table on pages ENR 1.4-2 and ENR 1.4-3.
| Class | Type of Flight | Separation Provided | Service Provided | VMC Visibility and Distance from Cloud Minima | Speed Limitation | Radio Communication Requirement | ATC Clearance |
|---|---|---|---|---|---|---|---|
| A | IFR only | All aircraft | Air traffic control service | Not applicable | Not applicable | Continuous two-way | Yes |
| B(3) | IFR | All aircraft | Air traffic control service | Not applicable | Not applicable | Continuous two-way | Yes |
| VFR | All aircraft | Air traffic control service | 8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL Clear of clouds | Not applicable | Continuous two-way | Yes | |
| C | IFR | IFR from IFR IFR from VFR | Air traffic control service | Not applicable | 250 KT IAS below 3050 M (10000 FT) AMSL, unless advised by ATC. | Continuous two-way | Yes |
| VFR | VFR from IFR | 1) Air traffic control service for separation from IFR; 2) VFR/VFR traffic information (and traffic avoidance advice on request) |
8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL 1500 M horizontal; 300 M vertical distance from cloud | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | Yes | |
| D | IFR | IFR from IFR | Air traffic control service including traffic information about VFR flights (and traffic avoidance advice on request) | Not applicable | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | Yes |
| VFR | Nil | Traffic information between VFR and IFR flights (and traffic avoidance advice on request) | 8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL 1500 M horizontal; 300 M vertical \ distance from cloud | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | Yes | |
| E(3) | IFR | IFR from IFR | Air traffic control service and traffic information about VFR flights as far as practical | Not applicable | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | Yes |
| VFR | Nil | Traffic information as far as practical | 8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL 1500 M horizontal; 300 M vertical distance from cloud | 250 KT IAS below 3050 M (10000 FT) AMSL | No | No | |
| F(3) | IFR | IFR from IFR as far as practical | Air traffic advisory service; flight information service, radar advisory service. | Not applicable | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | No |
| VFR | Nil | Flight information service, radar advisory service. | 8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL 1500 M horizontal; 300 M vertical distance from cloud. At and below 900 M AMSL or 300 M above terrain whichever is higher - 5 KM, clear of cloud and in sight of ground or water | 250 KT IAS below 3050 M (10000 FT) AMSL | No | No | |
| G | IFR | Nil | Flight information service | Not applicable | 250 KT IAS below 3050 M (10000 FT) AMSL | Continuous two-way | No |
| VFR | Nil | Flight information service | 8 KM at and above 3050 M (10000 FT) AMSL 5 KM below 3050 M (10000 FT) AMSL 1500 M horizontal; 300 M vertical distance from cloud. At and below 900 M AMSL or 300 M above terrain whichever is higher - 5 KM (1), clear of cloud and in sight of ground or water | 250 KT IAS below 3050 M (10000 FT) AMSL(2) | No (Except continuous two-way required when operating in Class G at an aerodrome with ATS) | No |