What was found
ETOPS - AIR L WING LEAK DET FAULT ON ECAM. FOUND BMC 2 BOX DAMAGED. REMOVED AND REPLACED BMC 2 PER AMM 36-11-34. CONDITION SAME. REMOVED BMC 1 & BMC 2 OPEN C/B'S C73 & T34. LOOP CONNECTORS AT 382HF DISCONNECTED PER AMM 36-22-00-810-909-A. 382HF 275OHMS TO BMC 1 4B, INSULATION RESISTANCE OPEN 381HF 268OHMS TO BMC 1 3B, INSULATION RESISTANCE 36M OHMS. RECONNECTED 382HF LOOP CONNECTOR PER AMM 36-22-19. INSTALLED BMC 1 & 2 AND CLOSED C73 & T34 C/B. OPERATIONAL CHECK OK. PER AMM 36-11-34-400-802-A.