JAPAN, Japan Airlines' new three-year budìsiness plan, which will run from April 1, intends to trim debt and reduce the number of ground-based employees, aiming at lowering costs and maintaining profits. About 47%, 4200 people, of the ground staff is to be reduced by March 2003. The airline also said it plans to replace Boeing Co DC-10, MD-11 and B737-200 aircrafts over the next three years with new...