What was found
DURING TAXIOUT (AMS), THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL WITH HIGH EGT, LOSS OF OIL PRESSURE, AND SMOKE WAS REPORTED COMING FROM THE TAILPIPE. THE FIRE HANDLE WAS PULLED AND THE BOTTLES WERE DISCHARGED. A BOROSCOPE AND INSPECTION OF THE ENGINE CHECKED OK. THE FIRE BOTTLES WERE REPLACED AND A FULL POWER RUN-UP CONFIRMED PROPER ENGINE OPERATION. THE ENGINE IS SCHEDULED FOR REPLACEMENT.