Margaret Dale Sullivan, 54, a government secretary who was active in civic organizations, died Feb. 10 in her Bethesda home after a heart attack.

She had worked in the internal audit division of the Consumer Products Safety Commission since 1977. Before that, she had worked as an administrative aide in the Commerce Department for about six years.

During the mid-1960s, Mrs. Sullivan had served on the board of the Green Acres-Glen Cove Citizens Association and as president of the Green Acres-Glen Cove Women's Club.

She had been publicity chairman of the Rock Creek Republican Women's Club.

Mrs. Sullivan was born in Ithaca, N.Y., and had lived in Oregon and Richmond before moving to this area in 1954.

From 1958 to 1963, she was a crossing guard for the Montgomery County police department at Westbrook Elementary School in Bethesda.

Mrs. Sullivan was a member of the Church of the Little Flower in Bethesda.

Her husband, James P. Sullivan, a sales representative with the ALCO division of White Motor Co. died in 1977.

She is survived by a son, Timothy, of Seabrook, Md.; a daughter, Dale S. Parks, of Gaithersburg; a brother, Paul Dale, of Ithaca, and two grandchildren.