INFO Last updated on 15 JUL 2021                                                                PDF Version - Printable

ENR 1.4    ATS  AIRSPACE  CLASSIFICATION  

GENERAL

ATS airspace is classified and designated in accordance with the following:

Class A 

Only IFR flights are permitted, all flights are subjected to air traffic control service and are separated from each other.

Class B  (Not used in Colombo FIR)

IFR and VFR flights are permitted, all flights are subjected to air traffic control service and are separated from each other.

Class C   

lFR and VFR flights are permitted, all flights are subjected to air traffic control service and IFR flights are separated from other IFR flights and from VFR flights. VFR fights 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 subjected 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. AIl flights receive traffic information as far as practicable.

Class F (Not used in  Colombo FIR) 

IFR and VFR flight 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.

REQUIREMENTS FOR FLIGHTS

The requirements for flights within each class of airspace are tabulated separately  (   Click here to view)

ATS CLASSIFICATION WITHIN  COLOMBO FIR

Within the Colombo FIR, the airspace is divided into 5 classes in accordance with the para 2.4 of ICAO Annex 11 as shown in the table below

Table 3.1

 Click here to view the table of ICAO ATS Airspace Classification.