What was found
GOT SMELL OF OIL WITH VIBRATION AFTER T/O 30 MINUTES LATER L PACK MODE EICAS MESSAGE AND STATUS MESSAGE ECON COOL VALVE L INSPECTED L PACK ACM FOUND BLADE MISSING FROM ACM TURBINE SECTION FWD TO MCO/PLAC PER MEL 21-52-01 C/P DISCONNECTED CLEARED STATUS MESSAGE INSPECTED L PACK ACM - FOUND BLADED MISSING FROM ACM TURBINE SECTION - FWD TO MCO/PLAC PER MEL 21-52-01 - C/P DISCONNECT - CLEARED STATUS MSG OK ETOPS CATEGORY 'B': DIVERSION OR TURNBACK