As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B18271 DUE TO #1 ENG VIBRATION HIGH & EGT OVER LIMIT AFT 3 HRS DEPARTED FM BMM, #1ENG SHUT DOWN IN FLT & RETURN TO BKK.C/A:1.INITIAL INVESTIGATION:GROUND CHECK FOUND #4 BEARING PRESS TUBE BROKEN AT 7:00 CLOCK AND EDP PRESS OUTLET B-NUT LOOSEN. 2.INITAL ACTION:RPLD #1 ENG AND RUN UP TEST NORMAL IAW 71-00-02, HYD SYS CHECK AND RPLD FILTER IAW 29-11-23 RETURN FILTER IAW 29-11-29