Utah's index of leading economic indicators in March, as compiled by First Security Bank, partially recovered ground lost the month before, the bank said. First Security economist Kelley K. Matthews said the March index gained .6 percent over February, contrasting the national index that declined .7 percent. New construction permits and a lower consumer loan delinquency rate influenced the March gain, the bank said. For the 12 month period ending March 1989, the index improved 1 percent, compared with .3 percent at the end of February, indicating momentum in economic growth, Matthews said. Indicators used to calculate the index include, new automobile sales and loans, and consumer loan delinquency rates.