Corneal John Mack, 87, former vice president and general manager of the Mayflower Hotel in Washington, died of a heart ailment April 10 at his home in Annapolis.

Mr. Mack, who was born and raised in Wilkes-Barre, Pa., came to the District in 1918, and attended Benjamin Franklin University. He went to work for the Mayflower in 1924, a year before the hotel officially opened, and became its general manager in 1941 and, eventually, its vice president.

He lived at the Mayflower until his retirement in 1973, when he moved to Annapolis.

Mr. Mack was a former president of the International Hotel Association and president and chairman of the board of the American Hotel and Motel Association. He also served as director and treasurer of both the Hotel and Motel Redbook Directory Corporation and the Hotel Credit Card Corporation.

Mr. Mack also was chairman of the budget committee and a member of the executive committee of the Washington Convention and Visitors Bureau. He was a director of the American Security Corporation and the National Permanent Savings and Loan Association and active in the Boy Scouts of America and the American Red Cross.

Survivors include his wife, Helen L. Mack of Annapolis; one daughter, Marilyn M. Jarboe of Washington; one son, C. John Mack II of Virginia Beach, Va.; one sister, Louise Mack and one brother, Paul Nelson Mack, both of Wilkes-Barre; eight grandchildren and one great-grandchild.