Berge Thomasian, 58, an official of the Saco Defense Systems Division of the Maremont Corp. in Saco, Maine, and a former member of the Fairfax School Board, died of respiratory failure May 8 at the Maine Medical Center in Portland.

Mr. Thomasian, who was born in New York City, was a fighter pilot in the Army Air Forces in Europe in World War II. He earned bachelor's and master's degrees at Boston University.

He moved to the Washington area in 1952 and went to work for Melpar Associates and later for Servonics Inc., where he was a vice president. He then founded and became president of Applied Sciences Industries in Alexandria. From 1966 to 1968, he was product development manager for the Atlantic Research Corp. He represented the Falls Church district on the Fairfax School Board from 1960 to 1962.

Mr. Thomasian joined Saco Defense Systems in 1968 and was its vice president and general manager at his death.

His marriage to Vanda V. Thomasian ended in divorce.

Survivors include his wife, Lee, of Cape Elizabeth, Maine; a son by his first marriage, John B., of McLean; his parents, John and Noyamie Thomasian of Fresno, Calif., and a brother, Aram J., of El Cerrito, Calif.