GEN 3.4 COMMUNICATION SERVICES
3.4.1 RESPONSIBLE SERVICE
3.4.1.1 The Civil Aviation Authority of Singapore (CAAS) is responsible for the provision of telecommunication and navigation facility services in Singapore.
3.4.1.2 Enquiries, suggestions or complaints regarding any telecommunication and navigation facility services should be referred to the Director-General of Civil Aviation.
| Post: | Director-General of Civil Aviation Civil Aviation Authority of Singapore 60 Airport Boulevard, #04-01, Changi Airport Terminal 2 Singapore 819643 |
| Tel: | (65) 65421122 |
| Fax: | (65) 65421231 |
| AFS: | WSSSYAYX |
3.4.1.3 The service is provided in accordance with the provisions contained in the following ICAO documents:
| Annex 10 | – Aeronautical Telecommunications |
| Doc 8400 | – Procedures for Air Navigation Services - ICAO Abbreviations and Codes (PANS-ABC) |
| Doc 8585 | – Designators for Aircraft Operating Agencies, Aeronautical Authorities and Services |
| Doc 7030 | – Regional Supplementary Procedures |
| Doc 7910 | – Location Indicators |
| Doc 9880 | – Manual on Detailed Technical Specifications for the Aeronautical Telecommunications Network (ATN) using ISO / OSI standards and protocols |
3.4.1.4 Differences to these provisions are detailed in subsection GEN 1.7.
3.4.2 AREA OF RESPONSIBILITY
3.4.2.1
Communication services are provided for the entire SINGAPORE FIR.
Communication services are provided for the entire SINGAPORE FIR.
3.4.2.2 For the following airspace within Jakarta FIR, aeronautical telecommunication services (CNS) will be jointly provided by
Indonesia and Singapore:
The area bounded by 031727N 1052959E 012450N 1061648E 001030N 1045656E 000000N 1050340E 000000N 1044330E
thence around the arc of a circle radius 90 NM centred on 011324N 1035124E to 013430N 1022353E 011300N 1033000E
011408N 1033142E 011200N 1033900E 011046N 1034015E 010800N 1034500E 011500N 1040000E 011800N 1043000E
012921N 1043441E 011947N 1044606E 021838N 1052205E 023641N 1051311E 024348N 1050854E 025010N 1051210E
031453N 1052619E 031727N 1052959E excluding the Tanjungpinang Terminal Control Area (TMA) and Control Zone (CTR).
Vertical limit: SFC to FL370
Indonesia and Singapore:
The area bounded by 031727N 1052959E 012450N 1061648E 001030N 1045656E 000000N 1050340E 000000N 1044330E
thence around the arc of a circle radius 90 NM centred on 011324N 1035124E to 013430N 1022353E 011300N 1033000E
011408N 1033142E 011200N 1033900E 011046N 1034015E 010800N 1034500E 011500N 1040000E 011800N 1043000E
012921N 1043441E 011947N 1044606E 021838N 1052205E 023641N 1051311E 024348N 1050854E 025010N 1051210E
031453N 1052619E 031727N 1052959E excluding the Tanjungpinang Terminal Control Area (TMA) and Control Zone (CTR).
Vertical limit: SFC to FL370
3.4.3 TYPES OF SERVICE
3.4.3.1 Radio navigation services.
3.4.3.1.1 The following types of radio aids to navigation are available:
LF/MF non-directional beacon (NDB)
Instrument landing system (ILS)
Instrument landing system (ILS)
Doppler VHF omni-directional radio range (DVOR)
Distance measuring equipment (DME)
Long range primary and secondary surveillance radar
Primary and secondary approach radar
Airport surface detection equipment (ASDE)
3.4.3.2 Voice/data link services
3.4.3.2.1 Voice Service
- The aeronautical stations maintain a continuous watch on their stated frequencies during the published hours of service unless otherwise notified.
- An aircraft should normally communicate with the air-ground control radio station that exercises control in the area in which the aircraft is flying. Aircraft should maintain a continuous watch on the appropriate frequency of the control station and should not abandon watch, except in an emergency, without informing the control radio station.
3.4.3.2.2 Enroute Communications Organisation
- The radio frequencies for enroute communications are listen in subsection ENR 2.1
- The Singapore HF network provides an umbrella communication coverage for the FIR and may be contacted if communication cannot be maintained on the primary channel.
- Aircraft approaching or departing from an airport is required to communicate with that airport on the appropriate surface movement, tower, or approach control frequency.
- ADS-C and / or CPDLC services are available to suitably equipped aircraft operating outside radar cover and not in ADS-B exclusive airspace within the Singapore FIR. The hours when ADS-C and CPLDC services are available and the logon requirements are listed in ENR 2.1. Full details of the services are published in ENR 1.1 paragraphs 9.1 to 9.6.
3.4.3.2.3 Data Link Service
- The messages to be transmitted over the Aeronautical Fixed Service (AFS) are accepted only if:
- the messages satisfy the requirements of ICAO Annex 10, Volume II, Chapter 3, paragraph 3.3;
- the messages are prepared in the form specified in ICAO Annex 10;
- the text of an individual message does not exceed 1800 characters.
3.4.3.2.4 General Aircraft Operating Agency Messages
- General aircraft operating agency messages (with priority indicator “KK”) are only accepted for transmission to countries which have agreed to accept Class B2 traffic. Details of telecommunication charges for Class B2 traffic to countries with which Singapore has agreement for handling of such traffic are given below:
- List of States/Regions to which Class B2 traffic will be accepted (rate of charge will be S$0.30 per word):
Australia, Brunei, Hong Kong, Indonesia (AFS Stations), Kampuchea Democratic, Malaysia (Peninsular Malaysia, Sabah and Sarawak), Myanmar, Netherlands, New Zealand, Philippines (Manila), Singapore, Taiwan, Thailand and Vietnam.
- List of States/Regions to which Class B2 traffic will be accepted (rate of charge will be S$0.30 per word):
3.4.3.3 Broadcasting service
3.4.3.3.1 The following broadcasts are available for the use of aircraft in flight:
- HF RTF Volmet Broadcasts (page GEN 3.5-7 refers)
- VHF ATIS Broadcasts (page GEN 3.4-3 refers)
| COMPUTERISED ATIS BROADCASTS | |||
| Station | Callsign Identification | Frequency MHz | Hours UTC |
| 1 | 2 | 3 | 4 |
| SINGAPORE / Singapore Changi | Changi Airport Departure Information | 128.6 | H24 (broadcasting with half hourly updated MET INFO) |
| Changi Airport Arrival Information | 128.025 | ||
| SINGAPORE/ Seletar | Seletar Airport Information | 128.425 | H24 (broadcasting with hourly updated MET INFO) |
| Remarks | |||
| Alphabetical Reference All ATIS broadcasts will include Alphabetical Reference for identification in the ATIS message. Updating of Data H + 00 to H + 10 and H + 30 to H + 40. Range 100NM Height A110 Power 50W Note to D-ATIS users Pilots are advised to use AEEC 623 format with Cyclic Redundancy Check (CRC) for D-ATIS service to ensure data integrity. For aircraft formats without CRC (e.g. AEEC 620 format or AEEC 623 format without CRC), pilots are advised to verify the D-ATIS message received with the voice broadcasted ATIS message or to use only voice broadcasted ATIS service. | |||
3.4.3.4 Language Used
3.4.3.4.1 The language used is English.
3.4.3.5 Obtaining Detailed Information
3.4.3.5.1 Details of the various facilities available for the en-route traffic can be found in section ENR 4.
3.4.4 REQUIREMENTS AND CONDITIONS
3.4.4.1 The requirements of the Civil Aviation Authority of Singapore and the general conditions under which the communication services are available for international use, as well as the requirements for the carriage of radio equipment, are contained in the Air Navigation Order of Singapore.
3.4.5 MISCELLANEOUS
NIL
| AERONAUTICAL FIXED SERVICES - INTERNATIONAL AND DOMESTIC CIRCUITS | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| STATION | CORRESPONDENT | TYPE OF CHANNEL | RADIO FREQUENCIES | TYPE OF TRAFFIC | HOURS (UTC) | REMARKS | ||||
| NAME | LOCATION INDICATOR | CALLSIGN FOR RADIO CIRCUITS | NAME | CALLSIGN FOR RADIO CIRCUITS | TRANS KHZ | REC KHZ | ||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| SINGAPORE | WSSS | BANGKOK | LTTdx | AFS | H24 | |||||
| WSSS | BAHRAIN | LTTdx | AFS | H24 | ||||||
| WSSS | BRUNEI | LTTdx | AFS | H24 | ||||||
| WSSS | COLOMBO | LTTdx | AFS | H24 | ||||||
| WSSS | HO CHI MINH | LTTdx | AFS | H24 | ||||||
| WSSS | JAKARTA | LTTdx | AFS | H24 | ||||||
| WSSS | KUALA LUMPUR | LTTdx | AFS | H24 | ||||||
| WSSS | LONDON | LTTdx | AFS | H24 | ||||||
| WSSS | MANILA | LTTdx | AFS | H24 | ||||||
| WSSS | BRISBANE | LTTdx | AFS | H24 | ||||||
| WSSS | FUKUOKA | LTTdx | AFS | H24 | ||||||
| WSSS | MUMBAI | LTTdx | AFS | H24 | ||||||
| SINGAPORE ACC | JOHOR BAHRU KUALA LUMPUR | LTTdx | ATS | H24 | Direct ATS Speech Circuit | |||||
| KUCHING | LTTdx | ATS | During aerodrome hours of operation | Direct ATS Speech Circuit | ||||||
| KOTA KINABALU | LTTdx | ATS | H24 | Direct ATS Speech Circuit | ||||||
| JAKARTA | LTTdx | ATS | H24 | 4-party Speech Circuit | ||||||
| PEKAN BARU | LTTdx | ATS | 0001-1100 | 4-party Speech Circuit | ||||||
| MANILA | LTTdx | ATS | H24 | Direct ATS Speech Circuit | ||||||
| MEDAN | LTTdx | ATS | 2300-1400 | 4-party Speech Circuit | ||||||
| BATAM | LTTdx | ATS | 0100-0800 | Direct ATS Speech Circuit | ||||||
| Note: For local circuits connecting different offices to a Com Centre, see diagrams GEN 3.4-7 and 3.4-9 | ||||||||||
GEN 3.4 chart.pdf