What was found
ENG 1 HIGH VIBRATION AT FL 340 HIGHEST WAS 6.1 AND LASTED FOR 10-15 SECONDS. CONTACTED MOC / COORDINATED W/ P.P. ENGINEERING. CONFIRMED THROUGH AIDS REPORT <75> VIBE REACHED 6.1 FOR SHORT DURATION. AIRCRAFT NO LONGER OK FOR ETOPS UNTIL BORESCOPE. REF TSM 71-00-00-810-873-A; STEPS 4. A (1) , 4 A (2) , 4 A (3), (4), & (5) C/W. ENG #1 REPLACED. REF W/O 246827 CARD J321-72-HWI-02. REMOVED PLACARD CLEARED MIC.