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AIP ENR 1.6-1 SRI LANKA GENERAL RULES AND PROCEDURES 17 OCT 13 ENR 1.6 RADAR SERVICES AND PROCEDURES 1. PRIMARY R...

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AIP

ENR 1.6-1

SRI LANKA

GENERAL RULES AND PROCEDURES

17 OCT 13

ENR 1.6 RADAR SERVICES AND PROCEDURES

1.

PRIMARY RADAR

1.1

Supplementary Services

1.1.1

Radar units are operated as an integral part of the parent ATC unit and provide radar service to aircraft to the maximum extent practicable subject to limitations of,

Colombo Approach Control Service operates; Terminal Area Surveillance Radar (TAR) at KATUNAYAKE / Bandaranaike Intl. Airport Colombo. Range – 120 NM 1.3.

Application of radar control services

1.3.1

Radar identification is achieved in accordance with the provisions specified by ICAO.

1.3.2 c) The technical capability and reliability of the back up facilities of the radar.

The radar display information shall be used to provide the following general functions as an integral part of the Air Traffic Control Services;

d) Serviceability of communication systems facilities and terminations VizVHF tele-talk and inter ATS unit communications capability.

a) Maintain watch on the progress of flights in order to provide Colombo ACC and Approach Control units with,

a) Effective radar coverage dependent on prevailing propagation conditions. b) Intensity of weather clutter areas.

e) Wind speeds in excess of 105 Km/h 1.1.2

1.1.3

The procedures for the provision of radar services are those listed in Part X of ICAO DOC 4444(PANS-RAC) and are supplemented by procedures in this section and in any air traffic control instructions issued from time to time. The radar units will use the following call signs when providing radar services: a) Aircraft under area control “Colombo Radar”

II) Information on unreported traffic (Aircraft with COM failure or aircraft without radio) III) Information on significant deviation, by aircraft from the ATC clearance issued. b) Provide radar monitoring of aircraft, and vectoring identified aircraft when necessary; I) To effect expeditious climb of departing traffic to cruising levels

b) Aircraft under approach control – “Colombo Director”

II) For resolving potential conflicts with other traffic.

1.2

Radar coverage

1.2.1

Within the Colombo FIR following radar stations are operated: Colombo Area Control Service operates; AREA/TMA Radar (MSSR) RATMALANA/ Colombo airport. Range – 240 NM

I) Position information on aircraft under control.

at

CIVIL AVIATION AUTHORITY OF SRI LANKA

III) To assist in the navigation of aircraft in case of unserviceability of navigational equipment or other reason. IV) For expeditious descent from cruising levels in preparation for approach and landing. V) To intercept ILS or terminal approach aids.

AIRAC AIP AMDT 1/13

AIP

ENR 1.6-3

SRI LANKA

GENERAL RULES AND PROCEDURES VI) To monitor VOR, NDB approaches in order to advise aircraft deviations from normal approach paths.

and change over to appropriate frequency if considered necessary. 1.4.2

c)

To provide vectoring to aircraft for visual approach to RATMALANA/Colombo Airport.

The minimum horizontal radar separations. The minimum horizontal radar separations are: a) 8 NM when aircraft under Area Control beyond 60 NM from KATUNAYAKE/Bandaranaike Intl. Airport Colombo. b) 5 NM when aircraft under approach control up to 100 NM from KATUNAYAKE/Bandaranaike Intl. Airport Colombo.

1.3.3.1 Above minimum horizontal separation values may be increased at the discretion of the individual radar controller when the following circumstances so necessitates;

1.5

Graphic portrayal of radar coverage

1.5.1

Charts depicting the coverage of the radar are not published.

2

SECONDARY SURVEILLANCE RADAR (SSR)

2.1

Operating procedures

2.1.1

All aircraft (SKED/Non-SKED/TRNG) flying within designated Colombo controlled airspace are required to operate SSR transponders selecting Mode A (4096 codes) and Mode C simultaneously.

2.1.2

Aircraft departing Colombo shall operate transponders in accordance with instructions given by ATC.

2.1.3

Pilots who have received specific instructions from ATC concerning the setting of the transponder shall maintain that setting except in circumstances detailed in following paragraphs 2.2.1, 2.3.1 and 2.4.1 and 2.5.1.

a) High rates of closure between aircraft of track convergence. b) Slow rates of renewal of radar information. c)

When the radar controller expects communications difficulty due to congestion of communication channels.

1.3.4

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

1.4.

Radar and radio failure procedure

1.4.1

Radar failure

Radio failure In case of controlled aircraft experiencing communication failure and is operating in an area where radar separation is applied, such radar separation shall continue to be applied. If the aircraft is one which has not been identified, the radar controller shall maintain separation between aircraft under radar control and any other unidentified aircraft observed along the expected route of the aircraft with communication failure, until it is known that the aircraft has passed through the airspace concerned or has landed elsewhere.

d) Provide separation and maintain normal traffic flow when an aircraft experiences communication failure within the area of radar coverage. 1.3.3

12 MAY 16

In the event of radar failure or loss of radar identification, instructions will be issued to restore procedural separation

CIVIL AVIATION AUTHORITY OF SRI LANKA

AIP AMDT 1/16

AIP SRI LANKA

ENR 1.6-5 GENERAL RULES AND PROCEDURES

25 MAY 17

2.1.4 Aircraft inbound to Colombo shall transponder on the SSR code last assigned to them by the adjacent FIR or if no code has been previously assigned, Colombo Radar should be contacted for the required code or shall squawk A2000. 2.2

Emergency Procedure

2.2.1

The pilot of an aircraft encountering a state of an emergency shall set the transponder to Code 7700.

2.3

Radio Communication Procedure

2.3.1 In case of an aircraft experiencing Two-way radio communication failure, the pilot of the aircraft shall set his transponder to code A7600 and follow the established procedure and subsequent control of the aircraft will be based on those procedures. 2.4

Unlawful Interference Procedure

2.4.1

Pilot of an aircraft in flight subjected to unlawful interference shall endeavor to set the transponder to Mode A code 7500 to make the situation known, unless circumstances warrant the use of Mode A code 7700.

2.5

System of SSR Code Assignment

2.5.1. Aircraft operating in Colombo FIR will be assigned codes as follows; a) International flight

: 7301 – 7377

b) Domestic flights

: 4000 – 4077

Note: Military aircraft may be assigned domestic codes until discreet codes are agreed upon.

CIVIL AVIATION AUTHORITY OF SRI LANKA

AIRAC AIP AMDT 1/17