Separate schemes of Supplements numbering have been established for AIP Russia parts:
• General (GEN), En-route (ENR);
• AD. International Aerodromes (Book 1);
• AD. Aerodromes of classes 4D, 4E (ICAO) (except international) (Book 2);
• AD. Aerodromes of classes 1A, 2B, 3C (ICAO), heliports and landing sites (Book 4).
At that, the name of the file containing Supplement is formed as follows:
• General (GEN), En-route (ENR) SUP-XXXX(year)-XX(number);
• AD. International Aerodromes (Book 1) SUP(B1)-XXXX(year)-XX(number);
• AD. Aerodromes of classes 4D, 4E (ICAO) (except international) (Book 2) SUP(B2)-XXXX(year)-XX(number);
• AD. Aerodromes of classes 1A, 2B, 3C (ICAO), heliports and landing sites (Book 4) SUP(B4)-XXXX(year)-XX(number).
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