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02.1 Airspace Classification

Training Objective

To provide the controller with an understanding of airspace classes and the associated service requirements.

Key Knowledge

  • ICAO airspace classes (A–G)
  • Separation requirements per class
  • VFR and IFR applicability
  • Service provision differences

Operational Application

Controllers shall:

  • Apply appropriate separation based on airspace classification
  • Provide correct level of service to IFR and VFR traffic
  • Ensure compliance with controlled airspace requirements

1. Overview

Airspace is classified to define the level of service and separation provided to aircraft.

2. Core Content

2.1 Class A

  • IFR only
  • Full ATC separation provided

2.2 Class B

  • IFR and VFR
  • Separation provided to all aircraft

2.3 Class C

  • IFR separated from IFR and VFR
  • VFR receives traffic information

2.4 Class D

  • IFR separated from IFR
  • VFR receives traffic information

2.5 Class E

  • IFR separated from IFR
  • Limited service to VFR

2.6 Class F & G

  • Uncontrolled airspace
  • Advisory or information service only

2.7 Operational Implications

Controllers shall recognise:

  • In Class C airspace, IFR traffic is separated from both IFR and VFR traffic
  • In Class D airspace, VFR traffic may not be separated from other VFR aircraft
  • Traffic information shall be provided where separation is not applied

3. Procedures

3.1 Controlled Airspace Operations

  • Aircraft shall comply with ATC clearances
  • Separation shall be maintained by ATC

4. Standards

  • ICAO airspace classification rules apply
  • Separation requirements vary by class

5. Notes

  • Most en-route operations occur in Class A or C
  • VATSIM environments typically simulate controlled airspace