As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL LT HYD QTY INDICATING 14 OPENED LT FAN COWLS TO LET HYD FLUID DRAIN OFF. UNABLE TO DETERMINE SOURCE OF LEAK, BUT SUSPECT THRUST REVERSER ACTUATOR HYD LINE. HYD LEAK COMING FROM LOWER RT NON LOCKING ACTUATOR ON NR1 ENGINE. REPLACED LT ENG RT LOWER NON LOCKING REVERSE ACTUATOR, ALL OPS AND INDS NORMAL.