1. Supplementary services;
 
Area control surveillance services are provided within KIGALI FIR
 
a) Call sign: Kigali Radar
b) Frequency: 124.3 MHz.
c) Lateral limits: Along the entire Rwanda Political boundary
d) Vertical limits: Upper limit - UNL
                           Lower limit - 8000ft
 
2.  The application of radar control service
 
2.1 Radar identification will be achieved according to the provisions specified by ICAO.
 
2.2 Radar control services are provided in controlled airspaces to aircraft operating within Kigali FIR. The services to be
provided include:
 
a) Radar separation of arriving, departing and en-route traffic;
b) Radar monitoring of arriving, departing and en-route traffic to provide information on any significant deviation from the
normal flight path;
c) Radar vectoring when required;
d) Assistance to aircraft in emergency;
e) Assistance to aircraft crossing controlled airspace
f) Warnings and position information on other aircraft considered to constitute a hazard;
g) Information to assist in the navigation of aircraft.
 
2.3. The minimum horizontal radar separations provided are:
a) 10 NM En-route
 
2.4 Terrain Clearance
2.4.1 ATC Radar Controllers shall ensure that levels assigned to IFR flights when in receipt of a Radar Control Service will provide the minimum terrain clearances applicable for each sector.
 
2.4.2 Radar Controllers have no responsibility for the terrain clearance of, and do not assign levels to Aircraft operating Special VFR or VFR within controlled airspace which accept radar vectors.
 
3. Radar and air-ground communication failure procedures
3.1 Radar failure
In the event of radar failure or loss of radar identification, instructions will be issued to restore non-radar standard separation (procedural services) and the pilot shall be informed.
 
3.2 Air-ground communication failure procedures
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 provisions of manual of air traffic services and ICAO Doc 4444. 
 
If radar identification has already been established, the radar controller will vector other identified aircraft clear of its track until such time as the aircraft leaves radar cover.
 
4. Voice and CPDLC position reporting requirements ; and
Nil
 
5. Graphic portrayal of area of radar coverage
Nil

All aircraft about to enter Kigali FIR from an adjacent region where the operation of transponders  has not been required and have not received specific instructions from Kigali Radar concerning the setting of the transponder shall operate the SSR transponder on code A2000 until assigned a specific code by the radar controller.
 
All aircraft intending to fly within Kigali FIR should have and operate their SSR transponders with altitude reporting facility, Mode C.
 
1. Emergency Procedures
 
Except when encountering a state of emergency, pilots shall operate transponders and select modes and codes in accordance with ATC instructions. In particular, when entering Kigali FIR, pilots who have already received specific instructions from ATC concerning the setting of the transponder shall maintain that setting until otherwise instructed.
 
Pilots of aircraft about to enter Kigali FIR who have not received specific instructions from ATC concerning the setting of the transponder shall operate the transponder on Mode A/3, Code 20 (or 2000) before entry and maintain that code setting until otherwise instructed.
 
Emergency Procedures 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. In all other circumstances, the transponder shall be set to Mode A/3, Code 77 (or 7700)
 
2. Air-Ground Communication Failure and Unlawful Interference Procedures
2.1  Radio communication failure (Air-ground communication failure)
a) In the event of an aircraft radio receiver failure, a pilot shall select Mode A/3, Code 76 (or 7600) and follow established procedures; subsequent control of the aircraft will be based on those procedures
 
b) However, if the aircraft experiencing the communication failure is not identified, separation shall be applied between identified aircraft and all unidentified aircraft observed along the expected route of the aircraft with the communication failure, until such time as it is known, or can safely be assumed, that the aircraft with radio communication failure has passed through the airspace concerned, has landed, or has proceeded elsewhere.
 
2.2 Unlawful Interference Procedures
Pilots of aircraft in flight subjected to unlawful interference shall endeavor to set the transponder to Mode A, Code7500 to make the situation known, unless circumstances warrant the use of Mode A/B, Code 77 (or 7700)
 
3. System of SSR code assignment
3.1. SSR code assignment in Kigali FIR is undertaken by use of the Enhanced originating region Code Assignment Method(e-ORCAM).
 
3.2. Special Purpose Mode A/3 Codes
The following codes are reserved internationally for special purposes and should be selected as follows:
i. Code 7700: To indicate an emergency
ii. Code 7600: To indicate a Radio Failure
iii. Code 7500: To indicate unlawful interference with the planned operation of a flight
 
The following SSR code series are allocated to Kigali FIR
4. Voice and CPDLC position reporting requirements
Nil 
 
5. Graphic portrayal of area of SSR coverage.
Nil 

Nil

1. Mode S Aircraft Identification
To comply with ICAO airborne equipment requirements, all Mode S transponder equipped aircraft Engaged in international civil aviation must incorporate an Aircraft Identification Feature (Flight Identity or Flight ID) and ensure correct setting of Aircraft Identification. Incorrect Aircraft Identification settings compromise the safety and the benefits associated with Mode S and will prohibit Automatic flight plan correlation, which could affect subsequent ATC clearances and sequencing.
 
2. Radar failure procedures
a​) In the event of complete failure of the ATS surveillance system where air-ground communications remain, the controller will establish procedural separation between the aircraft and limit the number of aircraft permitted to enter the area.
b) As an emergency measure, use of flight levels spaced by 500ft may be resorted to temporarily if standard procedural separation cannot be provided immediately.
 
3. Transponder Failure
3.1. Failure before intended departure
When an aircraft experiencing transponder failure after departure and is operating or expected to operate in an area where the carriage of a functioning transponder with specified capabilities is mandatory, the ATC units concerned should endeavour to provide for continuation of the flight to the aerodrome of first intended landing in accordance with the flight plan. However,in certain traffic situations, either in terminal areas or en-route, continuation of the flight may not be possible, particularly when failure is detected shortly after take-off, the aircraft may then be required to return to the departure aerodrome or to land at the nearest suitable aerodrome acceptable to the operator concerned and to ATC.
 
3.2. Failure after departure
In case of a transponder failure which is detected before departure from an aerodrome where it is not practicable to effect a repair, the aircraft concerned should be permitted to proceed, as directly as possible, to the nearest suitable aerodrome where repair can be made. When granting clearance to such aircraft, ATC should take into consideration the existing or anticipated traffic situation and may have to modify the time of departure, flight level or route of the intended flight. Subsequent adjustments may become necessary during the course of the flight.