NOTAM are classified as per :-
(1) According to Distribution
a) NOTAM - Distribution by means of telecommunication or AFTN.
b) AIP Supplement - Distribution by means other than telecommunication or AFTN, such as messenger or postal services.
(2) According to Series
a) Concern to long or medium range flights, and given selected international distribution;
b) Full information on all airports, facilities and procedures available for use in international civil aviation, and given international distribution to adjacent states only;
c) Information of concern to aircraft other than those engaged in international civil aviation, and given national distribution only;
s) - Presence of removal of hazardous conditions due to snow, slush, or ice on aerodrome pavements or standing water associated with these conditions.