Aubrey Thayer Sullenberger;8;of 916 Summit Ave.;Monessen;died Wednesday;Aug.18;1999;in Mon Valley Hospital. She was born Dec.7;1990;in Carroll Township;a daughter of Randall Sullenberger of Monessen and Deneen Marie Minardi of Monessen. Aubrey was a resident of Monessen;where she was a member of the United Methodist Church. She would have entered the third grade at Monessen Elementary Center. She was a member of the Monessen Youth Soccer League;Monessen Brownie Troop 4051 and was a gymnastic student at B.G.School of Gymnastics. Survivors;in addition to her parents;include her brother;Blaine Patrick Sullenberger of Monessen;her maternal grandmother;Betty Jane Minardi of Monessen;and her paternal grandparents;Jack and Jean Haggerty Sullenberger of Monessen. Friends will be received Friday from 6 to 9 p.m.at the Leonard J.Parzynski Funeral Home;626 Broad Ave.;Belle Vernon. Services will be held Saturday at 1 p.m.in the funeral home;with the Rev.Conrad Anuel;pastor of the First Christian Church of Monessen;officiating. Interment will follow in Belle Vernon Cemetery. The Leonard J.Parzynski Funeral Home is in charge of arrangements.