Why do some Imaams recite every Friday during Fajr Salaat Surah Alif Laam Meem Sajdah?

Answer

It is Sunnat to recite Surah Alif Laam Meem Sajdah in Fajr on Fridays. However, this does not mean that it should be adopted as a permanent practice to the exclusion of other Surahs. The Imaam should occasionally recite other Surahs as well.