ENR 1   Règles et Procédures Générales General Rules and Procedures

ENR 1.8   Contingency plan for DAKAR UTA

PART I : LEVEL 2 CONTINGENCY PLAN (REQUIRING INTERVENTION OF ADJACENT FIR)

 

1. OBJECTIVES
1.1. This contingency plan contains Procedures to ensure the provision of air navigation services in the event of partial or total disruption of Air Traffic Services (ATS) within the Dakar Upper Traffic Area and is in accordance with RAS 11, Air Traffic Services Chapter 2, paragraph 2.30, and Attachment C and, document 4444 ATM-PANS (Chapter 15.8 and chapter 16.6).
1.2. This Contingency Plan is designed to accommodate the flow of international air traffic with a minimum of disturbance for aircraft transiting the airspace under the responsibility of DAKAR ACC Routes and flight levels are limited.
2. STATES AND FIRS AFFECTED
2.1. In the event that ASECNA activates this Contingency Plan, the adjacent ACCs, will be notified in accordance with the Letter of Agreement (LOA) established between them. The adjacent ACCs directly affected by this Contingency Plan are as follows :
STATE FIR ATS UNIT
Mauritania Dakar FIR Nouakchott ACC
Mali Bamako ACC
Cote d’Ivoire Abidjan ACC
Guinea Conakry Roberts FIR Roberts ACC
Cabo Verde Sal FIR Sal ACC
Spain Canarias FIR Canarias ACC
2.2. The contact details of the civil aviation authorities and organizations concerned are contained in PARAGRAPH 15 below.
3. MANAGEMENT OF THE CONTINGENCY PLAN
3.1 The contingency measures set out in the first part of this Plan are applicable in cases of foreseeable events is for level 2.
3.2 The following procedures have been put in place to ensure that the management of the Contingency Plan provides for international flights to proceed in a safe and orderly fashion through the DAKAR UTA.
CENTRAL COORDINATING COMMITTEE
3.3 The Central Coordinating Committee (CCC) function shall be to oversee the implementation of the Contingency Plan and in the event that the Air Traffic Services (ATS) in DAKAR UTA is disrupted for an extended period, make arrangements for and facilitate the temporary relocation of the Air Traffic Services to NOUAKCHOTT ACC and BAMAKO ACC and the restoration of Air Traffic Services in Dakar UTA.
The Central Coordinating Committee comprises representation from the following :
1) SENEGAL CIVIL AVIATION AUTHORITY (ANACIM)
2) ASECNA (HEADQUARTER, REPRESENTATIVE IN SENEGAL)
3) OTHER RELEVANT AUTHORITIES.
Contact details of its members are provided in paragraph 15.1 below.
ATM OPERATIONAL CONTINGENCY GROUP
3.4 The ATM Operational Contingency Group (AOCG) will be convened by the CCC with a primary responsibility to oversee the day to day operations under the contingency arrangements, and coordinate operational ATS activities, 24 hours a day, throughout the contingency period in coordination with the WACAF Contingency Coordination Team and adjacent FIRs. The AOCG will include any necessary specialist personnel from the following disciplines:
* Air Traffic Control Services (ATS)
* Aeronautical Telecommunication (COM)
* Aeronautical Meteorology (MET)
* Aeronautical Information Services (AIS)
* ATS equipment maintenance service provider
Contact details of its members are provided in paragraph 15.2 below.
4. AIR TRAFFIC MANAGEMENT AND CONTINGENCY PROCEDURES
4.1 Air Traffic Services Responsibilities
4.1.1 Tactical ATC considerations during periods of over-loading may require re-assignment of routes or portions thereof.
4.1.2 Alternative routes are designed to maximize the use of existing ATS route structures and communications, navigation and surveillance services.
4.1.3 In the event that ATS cannot be provided within DAKAR UTA, ASECNA shall publish not less than 48 hours before, if practicable, the corresponding NOTAM indicating the following:
a) Time and date of the beginning of the contingency measure ;
b) Airspace available for landing and over flying traffic and airspace to be avoided ;
c) Details of the facilities and services available or not available and any limits on ATS provision (e.g. ACC, APP, TWR and FIS), including an expected date of restoration of services if available ;
d) Information on the provisions made for alternative services ;
e) ATS contingency routes ;
f) Procedures to be followed by neighboring ATS units ;
g) Procedures to be followed by pilots ; and
h) Any other details with respect to the disruption and actions being taken that aircraft operators may find useful.
4.1.4 In the event that the Dakar ACC is unable to issue the NOTAM, ASECNA will take action to issue the NOTAM of contingency measures upon notification by DAKAR ACC
4.2 Separation
Separation criteria shall be applied in accordance with the Procedures for Air Navigation Services-Air Traffic Management (Doc 4444) and the Regional Supplementary Procedures (Doc7030).
Longitudinal separation of fifteen (15) minutes or 20 nautical miles Radar separation, where Radar services are available, for aircraft maintaining the same cruising flight level shall be applied.
4.3 Level restriction
Where possible, aircraft on long haul international flights shall be given priority with respect to cruising levels.
4.4 Airspace Classifications
Airspace classification will not be changed.
4.5 Aircraft position reporting
4.5.1 The primary means of communication will be by VHF or HF radio When CPDLC has been authorized for use by the relevant ATC authority this will become the primary means of communication, with VHF or HF as secondary.
Traffic Information Broadcast by Aircraft (TIBA) procedures shall apply in DAKAR UTA during periods of contingency.
4.5.2 TIBA frequencies shall be as follows:
AFI REGION – 126.9 MHz.
4.6 Other measures
Other measures related to the disruption of air traffic services and the implementation of the contingency scheme within the DAKAR UTA may be taken as follows :
* Suspension of all VFR Operations ;
* Delay or suspension of general aviation IFR operations ; and
* Delay or suspension of commercial IFR operations
4.7 Procedures for ATS Units
The ATS units providing Air traffic control services will follow their unit emergency operating procedures and activate the appropriate level of contingency procedures in line with this plan.
a) ATC will inform pilots of the emergency condition and advise if it is likely that the ATS will be suspended and transmit on the radio frequency in use providing pilots with alternate means of communication ;
b) during the period the contingency procedures are in effect, flight plan and other aircraft movement messages must continue to be transmitted by operators to DAKAR ACC via the AFTN/AMHS using normal procedures ;
c) on notification by SENEGAL CIVIL AVIATION AUTHORITY or ASECNA Headquarter, the ATS authorities operating the NOUAKCHOTT and BAMAKO ACCs will activate the contingency procedures in accordance with this plan.
d) prior to entry to the DAKAR UTA during contingency operations prior authorization must be obtained from SENEGAL CIVIL AVIATION AUTHORITY, and flights must comply with the ATC clearance and communications instructions issued by the NOUAKCHOTT and BAMAKO ACCs responsible for the airspace immediately adjacent to the DAKAR ACC contingency airspace.
e) Coordination of aircraft boundary estimates and flight levels by the adjacent DAKAR ACC responsible for aircraft entering the DAKAR UTA shall be in accordance with this Plan (where it also serves as the formal LOA).
f) The ACC responsible for aircraft entering the DAKAR UTA will instruct pilots to maintain the last flight level assigned and speed (Mach number if applicable) while operating in the DAKAR UTA ;
g) The ACC responsible for aircraft entering the DAKAR UTA will not authorize any change in route, flight level or speed unless specifically authorized by the ATS unit normally responsible for the affected airspace, or under this PLAN (where it also serves as the formal LOA) ;
h) the ACC responsible prior to aircraft entering the DAKAR UTA will inform aircraft that they must establish contact with the first ATS Unit after transiting the DAKAR UTA not less than 10 minutes before the estimated time of entry to the NEXT AIRSPACE ;
5. TRANSITION TO CONTINGENCY SCHEME
During times of uncertainty when disruption of air traffic services seems possible, aircraft operators should be prepared for a possible change in routing while en-route, familiarization of the alternative routes outlined in the contingency scheme as well as what may be promulgated by ASECNA via NOTAM.
In the event of a disruption of air traffic services that has not been promulgated, DAKAR ACC will, if possible, broadcast to all aircraft in the DAKAR UTA, airspace that is affected by the disruption and any further instructions.
It is recognized that when a disruption of air traffic services or airport closure occurs and is promulgated, operators may have different requirements as to their alternative routings. DAKAR ACC will evaluate all requests to ensure safety is maintained.
6. TRANSFER OF CONTROL, COORDINATION AND DELEGATION OF RESPONSIBILITY IN THE PROVISION OF AIR TRAFFIC SERVICES WITHIN THE DAKAR UTA
6.1 The transfer of control and communication will be at the common ACC boundaries or as previously agreed upon between :
a) Dakar – Sal ACCs ;
b) Dakar – Canarias ACCs ;
c) Dakar – Bamako ACCs ;
d) Dakar – Nouakchott ACCs ;
e) Dakar – Roberts ACCs ;
6.2 The responsibility for ensuring the provision of air traffic services within DAKAR UTA is transferred to NOUAKCHOTT and BAMAKO ACCs according to the following considerations :
a) BAMAKO ACC will ensure the provision of air traffic services for traffic operating along contingency ATS routes as follows :
* UA601 between (DS – IPUGA ),
* UB600 between (DS – GULAV).
b) NOUAKCHOTT ACC will ensure the provision of air traffic services for traffic operating along the following contingency ATS routes :
* UR976 (DS – LUMPO),
* UR975 (DS – NEVDI),
* UA302 (DS – TURUP ).
7. CONTINGENCY ATS ROUTES NETWORK
In the event of disruption of air traffic services within DAKAR UTA, aircraft operators should file flight plans using alternative contingency routes listed in the scheme below:
Note : ATS routes not included in the table below are temporarily unavailable.
Contingency routes FIR involved Flight Levels assignment Entry/Exit point Communications means
UR975 DAKAR FIR Northbound:
FL290-FL370-FL390-FL410
Southbound:
FL280-FL300-FL380 		DS / NEVDI 6535-8861 KHz
UA601 DAKAR FIR Eastbound:
FL310 -FL350
Westbound:
FL260-FL340-FL360-FL400 		DS / IPUGA 6673-8861 KHz
UR976 DAKAR FIR Eastbound:
FL310-FL350
Westbound:
FL260-FL320-FL340-FL360 		DS / LUMPO 6535-8861 KHz
UA302 DAKAR FIR Northbound:
FL290-FL370-FL390-FL410
Southbound:
FL280-FL300-FL380 		DS / TURUP 6535-8861 KHz
UB600 DAKAR FIR Northbound:
FL260-FL300-FL380
Southbound:
FL330-FL390 		DS / GULAV 6673-8861 KHz
8. PILOT AND OPERATOR PROCEDURES
8.1 Filing of flight plans
Flight plan requirements detailed in ASECNA AIP continue to apply during contingency operations, except where modified by the contingency ATS routes and FLAS specified by ATC and/or in NOTAM.
8.2 Overflight approval
Aircraft operators must obtain overflight approval from the Senegal Civil Aviation Authority prior to operating flights through the DAKAR UTA. During the period of activation of this Contingency Plan the adjacent ACC will provide normal ATC clearances for aircraft to enter the DAKAR UTA. The adjacent ACC is not responsible for coordination or provision of overflight clearances for the DAKAR UTA. The operator must ensure any required overflight approval has been obtained.
8.3 Pilots operating procedures
All aircraft transiting through DAKAR UTA shall strictly comply with the following :
a) Maintain contact with BAMAKO ACC or NOUAKCHJOTT ACC according to the paragraph 4 of this contingency plan.
b) Operate along or as close as possible to the centerline of the assigned contingency air traffic route.
c) Reach the flight level assigned by adjacent ACC for the transit of DAKAR UTA at least ten (10) minutes before entering DAKAR UTA.
d) Maintain the flight level assigned by the last adjacent ACC while operating within DAKAR UTA, unless an emergency or flight safety reason exists.
e) Maintain a continuous listening watch on the VHF frequency 126.9 MHz, and transmit blind in English on 126.9 MHz position reports five (5) minutes before and overhead each compulsory reporting point established along the respective air traffic route.
f) Include in the last position report to the competent adjacent ACC the estimated time of arrival over the entry and exit points of DAKAR UTA.
g) Whenever emergencies and/or flight safety reasons make it impossible to maintain the flight level assigned for the transit of DAKAR UTA, climb or descend well to the right of the centerline of the air traffic route being flown but remaining within DAKAR UTA, and to inform immediately, by blind broadcast on the VHF frequency 126.9 MHz, all other aircraft likely to be affected by transmitting a relevant emergency level change message (comprising the aircraft call-sign, the aircraft position, the flight levels being left and crossed, etc.).
h) Contact the competent adjacent ACC as soon as possible and at least ten (10) minutes before the estimated time of arrival over the relevant exit point of DAKAR UTA to obtain clearance for entering the adjacent airspace concerned.
i) Display navigation and anti-collision lights always during the transit of contingency airspace.
j) The application of SLOP is strongly encouraged
k) Transponders should be set on a discrete code assigned by ATC or select code A2000 if ATC has not assigned a code
8.4 Communications Procedures
Degradation of Communication -Pilot Radio Procedures
8.4.1 When operating within the contingency airspace, pilots should use normal radio communication procedures
8.4.2 In the absence of communication with ATC, the pilot should continue to make routine position reports on the assigned frequency and also broadcast positions in accordance with the TIBA procedures.
9. PUBLIC HEALTH EMERGENCIES
9.1 DAKAR ACC, upon receipt of information from a pilot or another ATS unit, regarding suspected case(s) of communicable disease, or other public health risk, on board the aircraft, shall forward a message as soon as possible to the ATS unit serving the destination / departure, unless procedures exist to notify the appropriate authority designated by the State and the aircraft operator or its designated representative.
9.2 To avoid misunderstanding that may result in inappropriate reaction from the stakeholders including air operators, information provided by the Health Sanitary Board (HSB) should be obtained in written form and relayed to air operators in written form. Where communication means do not enable relay of written text, the information shall be read verbatim.
10. VOLCANIC ASH CONTINGENCY PLAN (VACP)
10.1 If a volcanic ash cloud is reported or anticipated in DAKAR UTA, DAKAR ACC should take the following actions:
a) Immediately transmit relevant information to the flight crews of potentially affected aircraft to ensure that they are aware of the current position and expected position of the cloud and the concerned flight levels ;
b) Respond to requests for a course change or a level change as far as possible ;
c) Propose a route change to avoid or leave the reported or predicted areas of presence of the volcanic ash cloud when requested by the pilot or as the controller deems it necessary; and
d) Where possible, request a special flight report when the flight route enters or anticipates the planned volcanic ash cloud and transmit the report to the appropriate agencies.
10.2 When a flight crew informs DAKAR ACC that they have inadvertently entered a cloud of volcanic ash, DAKAR ACC should:
a) Respect measures applicable to an aircraft in an emergency, and
b) Alter the assigned route or level only if the pilot requests so or if the airspace or traffic conditions require it.
11. INTERCEPTION OF CIVIL AIRCRAFT
11.1 Pilots need to be aware that in light of current international circumstances, a contingency routing requiring aircraft to operate off of normal traffic flows, could result in an intercept by military aircraft. Aircraft operators must therefore be familiar with international intercept procedures contained in ICAO Annex 2-Rules of the Air Paragraph 3.8 and Appendix 2, Sections 2 and 3.
11.2 Pilots need to continuously listen out on the VHF emergency frequency 121.5 MHz and should operate their transponders always during flight, regardless of whether the aircraft is within or outside airspace where secondary surveillance radar (SSR) is used for ATS purposes. Transponders should be set on a discreet code assigned by ATC or select code A2000 if ATC has not assigned a code.
11.3 If an aircraft is intercepted by another aircraft, the pilot shall immediately:
* Follow the instructions given by the intercepting aircraft, interpreting and responding to visual signals in accordance with international procedures ;
* If possible, notify appropriate ATS Unit ;
* Set transponder code to 7700, unless otherwise instructed by the appropriate ATS unit ;
* Attempt to establish radio communication with the intercepting aircraft by making a general call on the emergency frequency 121.5 MHz ; and
* If instructions are received by radio from any source that conflict with those given by the intercepting aircraft, the intercepted aircraft, shall request immediate clarification while continuing to comply with the instructions given by the intercepting aircraft.
12. SEARCH AND RESCUE
12.1 ACCs involved in this contingency plan are required to assist any distressed aircraft of which they are aware and which flies over a contingency space.
12.2 The center that receives a distress message from an aircraft shall send the necessary messages (INCERFA, ALERFA or DETRESFA) to all authorities in the SAR service involved in this plan including the SAR authority of the center which is in contingency situation.
12.3 Each SAR authority shall assist as necessary its neighbor as requested in their LoA. Contact details of its SAR Authority are provided in paragraph 15.3 below.
13. PLAN TESTING AND REVIEW
13.1 The plan shall be tested by ATC simulation at least once per year.
13.2 A full review shall be conducted at least once per three years.
14. IMPLEMENTATION OF THE PLAN
The provisions of this contingency plan shall be promulgated by NOTAM to be issued by ASECNA in coordination with ICAO and the concerned States.
15. ALL CONTINGENCIES UNITS
15.1 CENTRAL COORDINATING COMMITTEE
N° Members Title Tél Email/Fax
01 Senegal CAA (ANACIM) Director of Air Navigation and Aerodromes +221 77 740 83 25 dibocor.sene@anacim.sn
02 ASECNA Senegal Representative of ASECNA +221 76 644 48 82 Syais@asecna.org
03 ASECNA Senegal Dakar ACC Manager + 221 76 123 94 76
dioufmam1@asecna.org
ASECNA HEADQUATERS (CRISIS ROOM)
N° Member Title Telephone Email
1 Director of Operations +221 77 333 27 88
+221 338 69 56 51
+221 338 69 20 62 		bakienonlou@asecna.org
15.2 ATM OPERATIONAL CONTINGENCY GROUP
N° Members Title Tél Email/Fax
02 Air Traffic Control Services (ATS) Head of OPS/ATC (+221) 76 388 60 66 diawism@asecna.org
03 Aeronautical Telecommunication (COM) Dakar Telecom center officer (+221) 76 388 60 61 okilimar@asecna.org
04 Aeronautical Meteorology (MET) Head of MET Service (+221) 76 388 60 69 wanesok@asecna.org
05 Aeronautical Information Services (AIS) AIM Unit officer (+221) 77 457 75 92 ndiayemou3@asecna.org
06 ATS equipment maintenance service provider Head of Maintenance Service (+221) 76 388 60 45 ribeirocam@asecna.org
15.3 SEARCH AND RESCUE POINT OF CONTACT
Center Member Title Telephone Email
DAKAR RCC SAR focal point +221 33 860 39 62
+221 77 333 01 14
+221 33 860 47 87
+221 77 333 01 14 		ccsdakarsenegal@gmail.com
ccs_dakar@yahoo.fr
PART II : LEVEL 3 CONTINGENCY (REQUIRING AVOIDANCE OF AFFECTED AIRSPACE)
UNAVAILABILITY OF DAKAR UTA
OBJECTIVES
In the event that the total disruption of Air Traffic Services (ATS) within DAKAR UTA does not allow to fly in the airspace affected, users are invited to circumvent the airspace.
Users may also choose to avoid the DAKAR UTA by flight planning via any alternative ATS routes provided by neighboring ATS unit of DAKAR ACC.
Users are advised to circumnavigate DAKAR UTA and try to establish contact with the ATS unit responsible for the provision of service as soon as possible according to the route structure which will be published by NOTAM.