ROUNDUP Fairchild Industries to Sell  
o Fairchild Industries Inc. of Chantilly, which announced plans this summer to sell its aircraft manufacturing operations in a corporate restructuring, said yesterday it is selling its composite bonding center in Hagerstown to Rohr industriesInc., an international aerospace supplier.</br></br>The announcement came after members of the United Auto Workers Union Lbcal 842 voted Sunday tp ratify a five-year agreement with Rohr, based in Chula Vista, Calif.'</br></br>Terms of the sale were not announced. The bonding center, specialise in the. manufacture of metal and fiberglass composite bonded aircraft parts, 3s the 'last of Fairchild's iaircraft manufacturing Operations to be sold, said Deborah Tufcker, a spokesman for Fairchild, a Interest rates on shortterm Treasury securities edged down in yesterdayÛªs auction after a sharp jump in rates last week.</br></br>The Treasury sold $6.4 billion in three-month bills at an average discount rate of 6.49 percent, down from 6.79 percent at a delayed auction held last Thursday. Another $6.4 billion was sold in six-month bills at an average discount rate of 6.96 percent, down from 7.07 percent at ThursdayÛªs auction.</br></br>The rates this week on three-month bills were the lowest since Sept. 14, when they averaged 6.32 percent. The rates on six-month bills were the lowest since 6.83 percent at last MondayÛªs auction.