ENR 1 GENERAL RULES AND PROCEDURES

ENR 1.4 ATS AIRSPACE CLASSIFICATION

 
 

1 Classification of airspaces

 
ATS airspaces are classified and designated in accordance with the following:
 
Class A. IFR flights only are permitted, all flights are subject to air traffic control service and are separated from each other.
 
Class B . IFR and VFR flights are permitted, all flights are subject to air traffic control service and are separated from each other.
 
Class C. IFR and VFR flights are permitted, all flights are subject to air traffic control service and IFR flights are separated from other IFR flights and from VFR flights. VFR flights are separated from IFR flights and receive traffic information in respect of other VFR flights.
 
Class D. IFR and VFR flights are permitted and all flights are subject to air traffic control service, IFR flights are separated from other IFR flights and receive traffic information in respect of VFR flights, VFR flights receive traffic information in respect of all other flights.
 
Class E. IFR and VFR flights are permitted, IFR flights are subject to air traffic control service and are separated from other IFR flights. All flights receive traffic information as far as is practical.
 
Class F. IFR and VFR flights are permitted, all participating IFR flights receive an air traffic advisory service and all flights receive flight information service if requested
 
Class G. IFR and VFR flights are permitted and receive flight information service if requested.
 
The Beatrix Control Zone (CTR) is a Circle with radius of 25 NM ARP within the limits of the Curaçao FIR with UPPER LIMIT FL065 and is classified as ATS
Airspace class D.
The Beatrix Aerodrome Traffic Zone (ATZ), a circle with radius of 3 NM ARP and UPPER LIMIT 2000ft.
The requirements for the flights within each class of airspace are as shown in table 2, ENR 1.4-2 and ENR 1.4-3.
 

2 ATS Airspace Classifications

TABLE 2
 
Class Type of flight Separation provided Service provided VMC visibility and distance from cloud minima Speed limitation Radio communication requirement Subject to an ATC clearance
A IFR only All aircraft Air traffic control service Not applicable Not applicable Continuous two-way Yes
B
  		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 3 050 m (10 000 ft) AMSL5 km below 3 050 m (10 000 ft) AMSLClear of clouds Not applicable Continuous two-way Yes
C
  		IFR IFR from IFR IFR from VFR Air traffic control service Air traffic control service Not applicable Not applicable 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 3 050 m (10 000 ft) AMSL5 km below 3 050 m (10 000 ft) AMSL1 500 m horizontal; 300 m vertical distance from cloud 250 KT IAS below 3050 m (10 000 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 (10 000 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 3 050 m (10 000 ft) AMSL5 km below 3 050 m (10 000 ft) AMSL 1 500 m horizontal; 300 m vertical distance from cloud 250 KT IAS below 3050 m (10 000 ft) AMSL Continuous two-way Yes
E 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 (10 000 ft) AMSL 250 KT IAS below 3050 m (10 000 ft) AMSL Yes
VFR Nil Traffic information as far as practical 8 km at and above 3 050 m (10 000 ft) AMSL5 km below 3 050 m (10 000 ft) AMSL1 500 m horizontal; 300 m vertical distance from cloud 250 KT IAS below 3050 m (10 000 ft) AMSL Continuous two-way No
F
  		IFR IFR from IFR as far as practical Air traffic advisory service; flight information service Not applicable 250 KT IAS below 3050 m (10 000 ft) AMSL Continuous two-way No
VFR Nil Flight information service 88 8 km at and above 3 050 m (10 000 ft) AMSL 5 AMSL5 km below 3 050 m (10 000 ft) AMSL1 500 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 (10 000 ft) AMSL Continuous two-way No
G IFR Nil Flight information service Not applicable   Continuous two-way No
VFR Nil Flight information service 8 km at and above 3 050 m (10 000 ft) AMSL 5 AMSL5 km below 3 050 m (10 000 ft) AMSL 1 500 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 (10 000 ft) AMSL Continuous two-way No
***When so prescribed by the appropriate ATS authority:
  1. ) lower flight visibilities to 1 500 m may be permitted for flights operating:
    1. at speeds that will give adequate opportunity to observe other traffic or any obstacles in time to avoid collision; or
    2. in circumstances in which the probability of encounters with other traffic would normally be low, e.g. in areas of low traffic volume and for aerial work at low levels;
  2. ) helicopters may be permitted to operate in less than 1 500 m flight visibility, if manoeuvred at a speed that will give adequate opportunity to observe other traffic or any obstacles in time to avoid collision.