LONDON (July 22)—Private equity firm Doughty Hanson & Co. plans to float Dunlop Standard Aerospace Group—parent of Dunlop Precision Rubber—on the New York Stock Exchange, according to a U.S. Securities and Exchange Commission filing. Doughty Hanson bought the company, then known as BTR Aerospace Group, from BTR P.L.C. for about $750 million in 1998, with the stated aim of taking it public within five years. Headquartered in Winnipeg, Alberta, Dunlop Standard is the holding company for four aerospace companies: Standard Aero, Dunlop Aviation Division, Aero Engine Equipment, and Dunlop Precision Rubber. Last year, the company generated sales of more than $440 million from these activities, up about 20 percent from 1997.