What was found
GROUP 3 SURGE ON TAKE OFF 1.33 EPR. PASSENGER COMFIRMED FLAMES FROM RT SIDE OF ACFT. ENGINE RECOVERED NO OTHER LIMITS EXCEEDED AND RESPONSE OK. SUPPLEMENTAL DATA UPDATE REPLACED #2 ENGINE. #2 ENG-RUN UP ENGINE PER AMM71-00-56-201 ACCT OF ENG REPLACEMENT. -#2 ENG OP CHKD GOOD ON ENG RUN, NO FAULTS, NO LKS. POST REMOVAL BORESCOPE OF REMOVED ENGINE SHOWS NORMAL TURBINE DETERIORATION.REMOVED ENGINE APPEARS TO HAVE CLASSIC GROUP THREE SURGE CHARACTERISTICS: I.E. HIGH PRESS COMPRESSOR CONTACTS AIRSEALS & OPENS CLEARANCES. COMPRESSED AIR SLIPS-BACK & CAUSES BACK PRESSURE WITH RESULTING STALL. KNOWN DETERIORATION PATTERN.