What was found
(CAN) NR 2 MLG TIRE SEPARATION/ RUPTURE ENGINE VIBRATION (N1) WAS DEPICTED ON EICAS AND FELT THROUGHOUT THE AIRCRAFT. THE FLIGHT CREW RETARDED THE POWER LEVERS TO REDUCE N1 VIB. TO WITHIN LIMITS. (FYI:AT 42 PERCENT N1 = 3.9 MILS). A/C DIVERTED. FLIGHT CREW POST FLIGHT CHECK WITNESSED 3 FAN BLADES SEVERELY DAMAGED INDUCED BYTHE NR 2 TIRE SEPARATION AND RUPTURE. THE IB FLAP SURFACE HAS SUSTAINED DAMAGE AS WELL. FYI: THIS IS THE SIXTH OCCURRENCE SINCE MAY 11TH, 2004, ASSOCIATED WITH THIS MFG TIRE SEPARATION.