As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: ETOP AFTER TAKEOFF L HYD QUANTITY LIGHT CAME ON FOLLOWED BY L SYS PRESS LIGHT. LEFT HYD QTY INDICATED 0.00.ATB TO CDG. FOUND LEAK AT FILTER CAP OF LEFT WING INBOARD SPOILER ACTUATOR. REMOVED AND REPLACED CAP P/N:1545661 AND O-RING P/N: NAS1602-910 PER AMM 27-61-02-4. LEAK TEST OK.