What was found
ON CAC FLT - NR 88, SPIM-KMIA, NR 2 ENGINE FIRE LIGHT AND BELL ACTIVATED DURING CLIMB (24,000 FEET). PERFORMED EMERGENCY PROCEDURES, DUMPED FUEL AND RETURNED TO SPIM. ON GROUND, MAINTENANCE CHECKED ENGINE SENSING AND STRUT SENSING LOOPS AND FOUND NO DISCREPANCIES. CLEANED COCNNECTORS AND INTERCHANGED FIRE DETECTOR CONTROL UNITS ENG NR 2 WITH ENG NR 4, VISUALLY CHECKED PNEUMATIC CLAMPS FOR SECURITY. PERFORMED ENGINE RUN UP. SYSTEMS OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)