As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF TH NR 3 FIRE WARNING BELL SOUNDED, BUT NOT LIGHTS CAME ON. THE BELL WAS SILENCED AND A FEW MINUTES LATER THE FIRE WARNING BELL AND LIGHT CAME ON. THE BELL WAS SILENCED BY REDUCING ENGINE POWER, BUT THE LIGHT REMAINED ON. PULLED NR 3 FIRE HANDLE, AND RETURNED TO MIAMI AIRPORT. THE FIRE BOTTLE WAS NOT USED. CORRECTED PNEUMATIC LEAK AT THIRTEENTH STAGE DUCT. CHECKED GOOD ON RUN UP. (M)