ATIS message aimed at arriving traffic.
ATIS is an automated, continuous broadcast, of recorded aeronautical information.
https://skybrary.aero/articles/automatic-terminal-information-service-atis
Example:
ENGM ARR ATIS C 0120Z D-ATIS EXP_ILS_APCH_RWY01L TRL_FL080 .WS REPORTED ON FINAL CONSTRUCTION WORK ON TWY S BETWEEN TWY PAPA AND LORANGE SIGMET MESSAGE NBR 7 VALID RWY01L WIND 360/17KTS VIS 10KM CLD BKN 4000FT T12 DP4 QNH_1014HPA CONFIRM ATIS C
