Type of Category

Class

Designated areas and altitude

Type of flight

Separation provided

Service provided

Radio Comm requirement

Subject to an ATC clearance

Controlled

A

  All airways from above FL200 to FL600*

IFR

All aircraft

ATC service

Continuous
two-way

Yes

B

  Radius of Incheon and Gimpo airports*

   - Within 5NM (SFC~10000FT MSL)
   - Within 5~10NM
      (1000FT AGL~10000FT MSL)
   - Within 10~20NM
      (5000FT AGL~10000FT MSL)

IFR
VFR

All aircraft

ATC service

Continuous
two-way

Yes

C

  Radius of airports with Approach Control**

   - Within 5NM (SFC~5000FT AGL)
   - Within 5~10NM
      (1000FT AGL~5000FT AGL)

IFR

IFR from IFR
VFR from VFR

ATC service

Continuous
two-way

Yes

VFR

VFR from IFR

- ATC service for separation from IFR

- VFR/VFR traffic information
 (and traffic avoidance advice on request)

Continuous
two-way

Yes

D

  Airway form 8000FT MSL to FL200*

  Airspace from above 10000FT MSL to FL200 within Seoul TMA, excluding Class B *

  Radius of airports none approach Control ***
    -  Within 5NM
       (SFC~5000FT AGL or the upper linits altitude of control zone)

IFR

IFR from IFR

- ATC service including traffic information about VFR flights(and traffic avoidance advice on request)

Continuous
two-way

Yes

VFR

NIL

- Traffic information between VFR and IFR flights (and traffic avoidance advice on request)

Continuous
two-way

Yes

E

  Controlled Airspace except Class A, B, C, and D.
   - Airspace (Lands and Waters) : 1000FT ~ 60000FT from the surface of the earth or sea.
   - Airspace over the high seas: 5500FT ~ 60000FT from the surface of the sea

IFR

IFR form IFR

- ATC Service

- Traffic information about VFR aircraft as far as practicable

Continuous
two-way

Yes

VFR

NIL

- Traffic information as far as practicable

No

No

Un-
controlled

G

  Uncontrolled airspace except Class A, B, C, D, and E.
   - Airspace (Land and Waters): Below 1000FT from the surface of the earth or sea.
   - Airspace over the high seas : Below 5500FT from the surface of the sea.

   - The airspace above FL600 to unlimited.

IFR
VFR

NIL

- Flight information service

No

No