A with diaeresis and macron (Ӓ̄ ӓ̄; italics: Ӓ̄ ӓ̄) is a letter of the Cyrillic script. In all its forms it looks exactly like the Latin letter A with diaeresis and macron (Ǟ ǟ Ǟ ǟ).
A with diaeresis and macron is used only in the alphabet of the Kildin Sami language where it represents a lengthened palatalized open front unrounded vowel /ʲaː/.
References
A with diaeresis and macron (Cyrillic) Wikipedia(Text) CC BY-SA