What was found
DURING TAXI, THE CREW REPORTED THAT THE RT ENGINE FIRE INDICATION HAD ILLUMINATED AND DISCHARGED THE EXTINGUISHER BOTTLES. THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPAIRED LOOSE WIRE SHIELDING ON THE RT ENGINE FIRE DETECTOR INNER LOOP. AN ENGINE RUN OPERATIONAL CHECK WAS SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.