What was found
FLT 778 - FWA-BOS - DURING CRUISE, THE NR 1 ENGINE STRUT LIGHT ILLUMINATED. ACCOMPLISHED AOM PROCEDURE AND THE LIGHT EXTINGUISHED. THE AIRCRAFT CONTINUED TO BOS AND LANDED WITHOUT FURTHER OCCURRENCE. FOUND A LOOSE CLAMP AT THE SIXTH STAGE CHECK VALVE IN THE NR 1 STRUT COMPARTMENT AND TIGHTENED THE SAME. OPERATIONALLY CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)