As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENG HYD PUMP LEAKING RETURN MATING SURFACE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG HYD (EDP) PUMP REF B737-800 AMM 29-11-11. WHILE PERFORMING A SYS FLUSH, FOUND CASE DRAIN QUICK DISCONNECT LOOSE AND NOT SEATED PROPERLY AT PYLON. ACCOMPLISHED A SYS BLEED FLUSH AND INSTALLATION TEST REF AMM TASK 29-11-11-839-001-001 STEPS 3 H. (8) THRU J. OPS AND LEAK CHECK GOOD.