What was found
RED PACK LEAK CAS B3-007406 LEAK DETECTED IN DUCT RUNNING FROM THE LEFT FLOW CONTROL VALVE TO THE PACK INLET AND PRECOOLER CROSS VALVE. PERFORMED OPERATIONAL CHECK OF THE AC SYSTEM. NO LEAK DETECTS AND SYSTEM OPERATES NORMALLY. PERFORMED BLEED LEAK DETECTION SYSTEM TROUBLESHOOTING. NOTED LEAK DETECTED 0005 AT 67% - FS 0791 PACK LOOP A. PERFORMED RESISTANCE CHECK OF MT141 AND MT73, FOUND MT73 RESISTANCE READ 4 OHMS HIGHER THAN NORMAL. REMOVED AND REPLACED MT73 PACK LOOP SENSOR WITH CUSTOMER SUPPLIED LOOP SENSOR. OPERATIONAL CHECKED GOOD. WORK DONE IAW BD100 AMM CHAPTER 36-21-11. (RTS 5/17)