What was found
DURING ROUTINE CHECK MAINTENANCE FOUND THE NR 1 ENGINE REAR TURBINE BEARING SUPPORT HEAT SHIELD BROKEN, DAMAGED TWO REAR TURBINE BEARING SUPPORT STRUTS/PYLONS (P/N 23077731). THE 11 O`CLOCK POSITION STRUT HAD BEEN CUT 0.25 INCHES THROUGH AND THE 1 O`CLOCK POSITION STRUT WAS CHAFED, BATTERED, AND CUT THROUGH IN VARIOUS PLACES. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE IAW EXPRESSJET TASKCARD 6271001 AND EMB145 XR MM 71-00-00. OPS AND LEAK CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE.