As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT TRANSIT FOUND HYD FLUID LEAKING FROM TAIL AREA JUST AFT OF ELEVATORS (BOTH SIDES) FROM ABOVE AREA. (ETOPS ISSUE) TROUBLESHOOTING FOUND PCU LEAKING. REMOVED MAIN RUDDER PCU IAW MM. REPLACED RUDDER PCU IAW MM. LEAK CHECK AND OPS CHECK OK. AIRCRAFT RETURNED TO SERVICE.