What was found
(CAN) NO. 2 HYDRAULIC PRESSURE CONTROL MODULE (PCM) DISCOVERED WITH A CRACK ON THE NUMBER 4 HYDRAULIC PUMP SUCTION BOX OF THE MODULE. #2 HYDRAULIC PCM REPLACED WITH SERVICEABLE UNIT. DETAILS FROM SAFETY REPORT: DURING A SERVICEABILITY CHECK, IT WAS NOTICED THAT THERE WAS HYDRAULIC FLUID ON THE UPPER DECK. INVESTIGATION CONCLUDED THAT THE STATIC LEAK WAS COMING FROM THE #2 HYDRAULIC POWER MODULE`S SUCTION LINE BOSS FITTING. THE BOSS WHERE THE `ROSETTE` FITTING IS INSERTED INTO WAS FOUND CRACKED. THERE WAS NO EVIDENCE OF THE SUCTION LINE B NUT BEING OVER-TORQUED WHEN THE POWER MODULE WAS REMOVED FROM THE AIRCRAFT. ADDITIONAL INFORMATION: PART WAS INSTALLED ON 3 JUNE 2019 DURING HEAVY MAINTENANCE CHECK AND WAS ON INSTALLED ON THE AIRCRAFT FOR 155.4 HOURS & 374 CYCLES. UNIT WAS LAST REPAIRED AT THE VENDOR. (TC# 20190731019)