What was found
ETOPS SIGNIFICANT SYSTEM, BOTH C1 AND C2 HYD PUMPS LOST PRESSURE DURING FLAP RETRACTION. AS PART OF O/N INSPECTION NOW NEITHER PUMP PRODUCES MORE THAN 1700 PSI BY ITSELF AND NOT MORE THAN 2700 PSI COMBINED. BEGAN REMOVAL OF ADP FILTER/PRESSURE MODULE TO CK PRESSURE RELIEF VLV, SYSTEM DEPRESURIZED. REPLACED CTR SYSTEM RETURN FILTER MODULE AND COMPONENTS PER MM 29-11-16-404-034. OPS CK GOOD, NO LEAKS FOUND.