Arpad A. Kopcsak, 67, a retired Army colonel who had served as air defense officer and military attache during his 30 years service, died Aug. 21 in his home in Fairfax. He died of eosinophilic fasciitis, a blood disorder.

Col. Kopcsak was a native of Pennsylvania. He was a 1938 graduate of the U.S. Military Academy at West Point and earned a master's degree in aeronautics at the University of Southern California. During World War II, he served in the air defense command in this country and in the Southwest Pacific. After the war, he was chief of civil defense for Hawaii.

From 1960 to 1964, he was stationed at the Pentagon where he worked on air defense, then spent three years as an attache in our embassy in Budapest, Hungary. He retired in 1968 as head of the Army retirement board at Walter Reed Army Medical Center.

He was a member of the Army Navy Country Club and was the winner of several area golf tournaments.

Survivors include his wife, Tess, of Fairfax; a son, Army Lt. Col. Arpad Kopcsak Jr. of North Carolina; a daughter, Terry Lucas of North Carolina; two brothers, retired Army Col. Peter Kopcsak of Garmisch, West Germany, and Colman, of Prescott, Ariz., and five grandchildren.