What was found
(CAN) UPON DISASSEMBLY OF POWER TURBINE, THE NR 4 MAIN BEARING WAS FOUND WITH 2 OF THE 4 MOUNTING CORNERS BROKEN OFF AND A 3RD CRACKED. THERE WAS SOME WEAR ON THE FACE OF THE BEARING MOUNTING SURFACE OF THE PT SHAFT HOUSING, NO OTHER DAMAGE WAS SEEN AROUND THE BEARING AND IT WAS STILL BEING HELD IN PLACE BY THE BOLTS AND LOCKTABS. REQUEST DISPOSITION OF PART, BEARING, PN 3028006, SN BB961598.