What was found
NUMBER 1 ENG FWD PYLON YOKE HAS RUB DAMAGE, HEAD DAMAGE, TO A JO-BOLT FASTENER LOCATED ON THE LOWER AFT SECTION ABOUT 3RD UP FROM THE BOTTOM. COMPLIED WITH ERS EM-54MR-310 TEMPORARY REPAIR OF LT PYLON FWD YOKE GUSSET PLATE & FASTENER. DEFERRED IAW ERS-EM-54MR-310.