1.1  A radar unit normally provides radar service to aircraft, to the maximum extent practicable, to meet the operational requirement. Many factors, such as radar coverage, controller workload and equipment capabilities, may affect these services, and the radar controller shall determine the practicability of providing or continuing to provide radar services in any specific case.

1.2  Daegu/Incheon ACC provide radar control service using 15 surveillance radar stations which cover Incheon FIR.

2.1  Radar identification is achieved according to the Standard Air Traffic Control Procedures specified by the MOLIT.

2.2  Radar control service is provided in controlled airspaces to aircraft operating within all TMA and along all AWYs. This service may include:

1. radar separation of arriving, departing and en-route traffic;

2. radar monitor of arriving, departing and en-route traffic to provide information on any significant deviation from the normal flight path;

3. radar vector when required;

4. assistance to aircraft in emergency;

5. assistance to aircraft crossing controlled airspace;

6. warnings and position information on other aircraft considered to constitute a hazard;

7. information to assist in the navigation of aircraft

2.3  The minimum horizontal radar separations are provided in accordance with the Standard Air Traffic Control Procedures specified by the MOLIT:

2.4  Levels assigned by the radar controller to pilots will provide a minimum terrain clearance according to the phase of flight.

3.1  Radar failure

In the event of radar failure of loss of radar identification, instructions will be issued to restore non-radar standard separation.

3.2  Radio failure

In the event of an aircraft radio failure, a pilot shall select Mode 3/A, Code 7600.

The radar controller will establish whether the aircraft radio receiver is working by instructing the pilot to carry out a turn or turns, If the turns are observed, the radar controller will continue to provide radar service to the aircraft.

If the aircraft's radio is completely unserviceable, the pilot should carry out the procedures for radio failure in accordance with ICAO provisions. If radar identification has already been established, the radar controller will vector other identified aircraft clear of its track.

3.3  Emergency procedures

1. Except when encountering a state of emergency, pilots shall operate transponders and select modes and codes in accordance with ATC instructions.

2. In the event of an aircraft emergency, a pilot shall select Mode 3/A, Code 7700. If the pilot of an aircraft encountering a state of emergency has previously been directed by ATC to operate the transponder on a specific code, this code setting shall be maintained until otherwise advised.

3.4  Unlawful interference procedure

Pilots of aircraft in flight subjected to unlawful interference shall endeavour to set the transponder to Mode 3/A Code 7500 to make the situation known.