07 Apr 2025 Chart Change Notice 309 – Turkiye Notices & Alerts / Chart Change Notice 309 – Turkiye Included Regions (1) Western Europe & Mediterranean Included Areas (1) Turkey The attached pdf shows a modified ATS system within Ankara and Istanbul FIRs. Consult current Chart Change Notices for latest information. Effective 17 April 2025. CCN_309_Turkiye Back to All Notices & Alerts