GM1 AIS.TR.400(a) Distribution services

• ED Decision 2020/008/R found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

GM1 AIS.TR.400(a) Distribution services ED Decision 2020/008/R NOTAM (a) The predetermined distribution system provides for incoming NOTAM (including SNOWTAM and ASHTAM) to be channelled through the aeronautical fixed service (AFS) directly to designated addressees predetermined by the receiving country concerned while concurrently being routed to the international NOTAM office for checking and control purposes. (b) The addressee indicators for those designated addressees are constituted as follows: (1) First and second letters The first two letters of the location indicator for the AFS communication centre associated with the relevant international NOTAM office of the receiving country. (2) Third and fourth letters The letters ‘ZZ’ indicating a requirement for special distribution. (3) Fifth letter The fifth letter differentiating between NOTAM (letter ‘N’), SNOWTAM (letter ‘S’), and ASHTAM (letter ‘V’). (4) Sixth and seventh letters The sixth and seventh letters, each taken from the series A to Z, denoting the national and/or international distribution list(s) to be used by the receiving AFS centre. The fifth, sixth and seventh letters replace the three-letter designator YNY which, in the normal distribution system, denotes an international NOTAM office. (5) Eighth letter The eighth position letter shall be the filler letter ‘X’ to complete the eight-letter addressee indicator. (c) Member States are to inform the States from which they receive NOTAM of the sixth and seventh letters to be used under different circumstances to ensure proper routing. GM1 AIS.TR.400(a) Distribution services ED Decision 2020/008/R NOTAM (a)       The predetermined distribution system provides for incoming NOTAM (including SNOWTAM and ASHTAM) to be channelled through the aeronautical fixed service (AFS) directly to designated addressees predetermined by the receiving country concerned while concurrently being routed to the international NOTAM office for checking and control purposes. (b)       The addressee indicators for those designated addressees are constituted as follows: (1)       First and second letters              The first two letters of the location indicator for the AFS communication centre associated with the relevant international NOTAM office of the receiving country. (2)       Third and fourth letters                          The letters ‘ZZ’ indicating a requirement for special distribution. (3)       Fifth letter                          The fifth letter differentiating between NOTAM (letter ‘N’), SNOWTAM (letter ‘S’), and ASHTAM (letter ‘V’). (4)       Sixth and seventh letters                          The sixth and seventh letters, each taken from the series A to Z, denoting the national and/or international distribution list(s) to be used by the receiving AFS centre.                          The fifth, sixth and seventh letters replace the three-letter designator YNY which, in the normal distribution system, denotes an international NOTAM office. (5)       Eighth letter                          The eighth position letter shall be the filler letter ‘X’ to complete the eight-letter addressee indicator. (c)       Member States are to inform the States from which they receive NOTAM of the sixth and seventh letters to be used under different circumstances to ensure proper routing.