What was found
DURING CRUISE NR 1 ENGINE FIRE WARNING AND BELL FLICKERED MOMENTARILY AT 410, SAT -50, TAT -21, MANIFOLD PRESSURE 32, MANIFOLD AIR TEP 150. THE CREW TESTED FIRE WARNING AND SHORT CIRCUIT WERE NORMAL CONDITION, REMAINED NORMAL REST OF FLIGHT. THEY LANDED IN KSJC WITH NO FURTHER INCIDENT. MX INSPECTED AND FOUND RT PYLON TOP LOOP GROUND STUD LOOSE AND LT FWD LOOP AFT CONNECTOR LOOSE, THEY TIGHTENED BOTH CONNECTION. OPS CHECK GOOD IAW MM 26-00 70 SERIES, GMM 3.124. ACFT WAS RETURNED TO SERVICE.