What was found
FWD EQ EXH FAN MSG AND FWD EQUIP SUPPY FAN 1. FWD TO MCO PER MEL 21-58-04. FWD EQUIP SUPPLY FAN MSG CLEARED. ONLY FWD EQUIP EXH FAN MSG ON EICAS. RESET BREAKER AND FOUND EXHAUST FAN RUNNING VERY ROUGH, REPLACED FWD EQUIP EXHAUST FAN PER MM MSGS STILL WONT CLEAR REPLACED FAN VIBRATION MONITOR UNIT PER MM CHECKS GOOD, MESSAGES CLEARED MCO/PLAC REMOVED. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS