Ned William Arick, 73, who retired in 1971 as chief of the Engineering and Valuation Branch of the Internal Revenue Service, died Sunday at George Washington University Hospital after an apparent heart attack.

He had joined the old Bureau of Internal Revenue in 1935. He was an attorney in the chief counsel's office, and served as director of the Special Technical Services Division before becoming branch chief.

Mr. Arick was a native of Fort Wayne, Ind., and a cum laude graduate of Wabash College in Crawfordsville, Ind. He was a 1931 honor graduate of George Washington University's law school, where he was elected to the Order of the Coif.

He worked in the Legislative Counsel's Office at the U.S. House of Representatives for two years before joining Internal Revenue.

He served in the Army Judge Advocate General's office during World War II.

He was a member of the Augustus B. Gardner Post of the American Legion and of the Army & Navy Club.

Mr. Arick was a member of All Saints' Episcopal Church in Chevy Chase. He was a resident of Rockville.

Survivors include his wife, Mary Catherine, of Rockville; two sons, Marine Corps Lt. Col. John C., of Camp Pendleton, Calif., and William E., of Leonardstown, Md.; a daughter, Catherine Stout of Sterling, Va.; a brother, Walter R., of Fort Wayne, Ind., and seven grandchildren.

The family suggests that expressions of sympathy be in the form of contributions either to Wabash College, or to All Saints' Episcopal Church.