What was found
ETOPS SIGNIFICANT SYSTEM - ECAM ENG 2 FIRE LOOP B FAULT OCCURRED THREE TIMES WITHIN A 5 MIN PERIOD. EACH OCCURRENCE LASTED LESS THAN 2 MIN AT CRUISE FL330, 40 MIN AFTER TAKEOFF. TROUBLESHOT ECAM ENG 2 FIRE LOOP B FAULT PER TSM 26-12-00-810-806-A. PERFORMED OPERATIONAL TEST OF FIRE DETECT SYSTEM. OPS GOOD. DUE TO PREVIOUS HISTORY INSPECTED ENG 2 FIRE LOOPS. FOUND KINKS IN FIRE LOOP 4001WD2, ALONG WITH DARKENED SPOT. REMOVED AND REPLACED CORE VENT FIRE LOOP B PER AMM 26-12-17-400-803. PERFORMED OPS CHECK PER 26-12-00. OPS CHECKED SECURITY, CHECKED GOOD. OK FOR SERVICE.