1.1  Communication, Navigation, Surveillance DivisionTUNIT;TXT_NAME;65 of Civil Aviation Authority of Mongolia is the responsible authority for the provision of communication and navigation services within the area of its responsibility as indicated under GEN 3.4.2.

1.2 Applicable ICAO documents

1.3 Differences to ICAO Annex 10 are detailed in subsection GEN 1.7.

3.1 Radio navigation service

The following types of radio navigation aids are available for any aircraft operating within the area of responsibility of Mongolian ATS units:

1. Non-directional Radio Beacon (NDB)

2. Instrument Landing System (ILS)

3. VHF Omnidirectional Radio Range (VOR)

4. Distance Measuring Equipment (DME)

5. Precision Approach Path Indicator (PAPI)

3.2 Voice / data link services

Voice service

The aeronautical stations maintain a continuous watch on their stated frequencies during the published hours of service unless otherwise notified. The details are given in subsection AD 2.18.

An aircraft should normally communicate with the air-ground control radio station that exercises control in the area in which the aircraft is flying.

Data link service

This service is provided for the exchange of messages related to the safety and regularity of air navigation between aeronautical fixed stations.

AFS circuits are illustrated in GEN 3.4.5.

AFS operations are applied in principle the communication procedure of Volume 2 of ICAO Annex 10 to the Convention on International Civil Aviation.

The text of an individual message does not exceed 1800 characters.

3.3 Broadcasting service

The following broadcasts are available for aircraft in flight:

a) VOLMET broadcasts are available for aircraft in flight as described in GEN 3.5.7;

b) VHF Automatic Terminal Information Service (ATIS) is provided at Buyant-Ukhaa International Airport and Chinggis Khaan International Airport. The details are given in subsection AD 2.18.

3.4 Language(s) used

Mongolian and English are used in aeronautical communication services.

3.5 Where detailed information can be obtained

Details of the various facilities available for the en-route traffic can be found in Part 2, ENR 4.

Details of the facilities available for the individual aerodromes can be found in the relevant sections of Part 3 (AD). In cases where a facility is serving both the en-route traffic and the aerodromes, details are given in the relevant sections of Part 2 (ENR) and Part 3 (AD).