International Civil Aviation Organization Western And

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INTERNATIONAL CIVIL AVIATION ORGANIZATION WESTERN AND CENTRAL AFRICA OFFICE Twenty-third Meeting of the AFI Satellite Network Management Committee (SNMC/23) (Accra, Ghana, 15-19 February 2016)

AFTN CIRCUIT AVAILABILITY STATISTICS FOR KANO FLIGHT INFORMATION REGION LAGOS CENTER AFTN CIRCUIT AVAILABILITY FROM JANUARY TO DECEMBER 2015.

STATION ACCRA COTONOU DOUALA LIBREVILLE NIAMEY LOME MALABO MONTH % % % % % % % JAN. 2015 94.62 90.19 72.18 50.54 90.46 N/A N/A FEB. 2015 99.50 66.97 58.48 13.83 63.54 N/A N/A MAR.2015 100 100 80.60 100 97.98 N/A N/A APR. 2015 100 100 99.70 99.70 89.30 100 46.15 MAY.2015 100 100 80.60 100 98.00 100 42.00 JUN. 2015 0 100 100 93.89 98.75 100 0 JUL. 2015 100 94.7 100 100 100 100 16.10 AUG.2015 100 100 100 100 100 100 100 SEP. 2015 100 100 93.88 96.67 100 100 100 OCT. 2015 98.50 98.50 98.10 98.30 98.50 94.10 53.50 NOV.2015 100 99.6 99.6 99.6 99.6 99.6 99.6 DEC.2015 100 100 100 100 100 100 100 PLOT COMMENT ON THE STATISTICS

 Accra failed throughout June, 2016. This was due to faulty VSAT MODEM. Which GCAA fixed by the end of June  Douala performed below ICAO recommended figure of 97% in Jan., Feb., May and Sept.  Malabo circuit started operation in April 2015. Availability was below 97% in April, May, June, July and October. This was due to configuration on the new AMHS in Malabo which has been perfected. KANO CENTER AFTN CIRCUIT AVAILABILITY FROM JANUARY TO DECEMBER 2015 stations Accra Brazzaville Doula Libreville Lome Ndjamena Niamey

Month % % % % % % % Jan. '15 0 100 100 100 100 99.19 100 Feb. '15 0 100 100 100 100 100 100 Mar. '15 96.91 100 100 99.73 100 100 99.6 Apr.'15 99.86 100 99.86 99.86 99.86 99.72 99.86 May '15 98.93 99.42 99.2 99.06 99.06 99.06 98.92 June '15 91.81 95.14 94.31 94.03 94.71 95.06 95.14 July '15 93.82 97.31 97.31 97.31 97.31 97.31 97.31 Aug. '15 97.85 97.85 99.85 97.85 97.85 97.85 94.36 Sep. '15 99.58 98.61 99.58 99.58 99.58 99.58 96.25 Oct. '15 100 100 99.86 56.67 100 97.84 100 Nov. '15 99.4 100 100 9.57 100 100 100 Dec' '15 100 100 100 0 100 100 100 GRAPH OF ATS/DS CIRCUIT AVAILABILITY

120

100 ACCRA %

80 BRAZA %

DOUALA % 60

LIBRE % 40

LOME %

20 NDJAM %

0 NIAMEY % COMMENT ON THE STATISTICS

 Accra circuit failed in January and February 2015. This was due to problem on the MOL2P in Kano  In June all the circuits recorded percentage availability below ICAO recommended 97%. This was due to failure of the RF unit of the earth station in Kano that lasted for one week.  Libreville’s availability percentage decreased steadily from October, November and December. This circuit is till not stable. LAGOS CENTER ATS/DS CIRCUIT AVAILABILITY FROM JANUARY TO DECEMBER 2015.

STATION ACCRA COTONOU DOUALA LIBREVILLE NIAMEY LOME MALABO MONTH % % % % % % % JAN. 2015 94.6 90.2 72.8 50.5 90.5 N/A N/A FEB. 2015 100 59.1 57 59.3 60.1 N/A N/A MAR.2015 100 100 82 100 96.8 N/A N/A APR. 2015 99.9 98.2 100 100 98.6 56.7 56.7 MAY.2015 100 100 100 100 100 100 42.1 JUN. 2015 94.1 98.2 100 99.8 99.9 100 0 JUL. 2015 93.9 100 100 99 98.8 100 25.1 AUG.2015 100 100 100 100 100 100 100 SEP. 2015 99.2 93.2 12.5 61.5 98.3 93.1 99.2 OCT. 2015 99.1 99.2 98.8 98.9 99.2 93.4 57.1 NOV.2015 99.4 78.4 99.5 99.5 56.1 99.3 97.2 DEC.2015 100 100 100 100 56.1 100 100 PLOT

100

70 ACCRA %

60 COTONOU % DOUALA % 50 LIBREVILLE %

40 NIAMEY % LOME % 30 MALABO %

0 JAN.2015 FEB.2015 MAR.2015 APR.2015 May-15 JUN.2015 JUL.2015 AUG.2015 SEP.2015 OCT.2015 NOV.2015 DEC.2015 COMMENT ON THE STATISTICS

 Circuits with extremely low percentage availability are in orange colour in the table  Circuits with availability above 70% but below the ICAO recommended figure of 97% are shown in blue on the table.  Circuits shown in black have percentage availability above 97% KANO CENTER ATS/DS CIRCUIT AVAILABILITY FROM JANUARY TO DECEMBER 2015.

LIBREVIL STATION ACCRA BRAZAVILLE DOUALA LOME NDJAMENA NIAMEY LE MONTH % % % % % % %

JANUARY 0 100 100 100 100 100 100

FEBRUARY 0 100 100 100 100 100 100 MARCH 96.77 100 99.86 99.73 100 99.87 99.6 APRIL 99.86 100 99.86 99.86 99.86 99.86 99.86 MAY 99.74 100 100 100 100 99.74 97.45 JUNE 96.67 96.38 96.77 96.77 96.38 96.38 96.67 JULY 86.56 99.46 96.51 99.46 99.46 95.97 98.79 AUGUST 99.87 99.6 100 100 100 100 95.3 SEPTEMBER 100 99.38 100 100 100 100 99.1

OCTOBER 100 100 99.86 56.31 100 97.84 99.46

NOVEMBER 99.42 100 100 100 100 100 100

DECEMBER 100 100 100 100 100 100 100 PLOT 120

100

ACCRA % 80 BRAZAVILLE %

60 DOUALA %

LIBREVILLE %

40 LOME %

NDJAMENA % 20

NIAMEY %

0 COMMENT ON THE STATISTICS

 Circuits with extremely low percentage availability are in orange colour in the table  Circuits with availability above 70% but below the ICAO recommended figure of 97% are shown in blue ìn the table.  Circuits shown in black have percentage availability above 97% ACTION BY THE MEETING

The meeting is invited to  Note the statistical information contained in the paper  Take actions to resolve problems of circuits that are not working well  Come up with resolution on how to prevent long period of circuit failure. THANK YOU FOR YOUR ATTENTION