As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT THE ARRIVAL OF FLT 221, FLIGHT CREW REPORTED THE YELLOW RESERVOIR LOW LEVEL. ON GROUND TECHNICIANS FOUND A LEAK AT THE PTU MANIFOLD. THE PTU MANIFOLD WAS REPLACED AS PER AIRCRAFT MM 29-13-15 AND OPERATIONAL TEST WAS PERFORMED IAW AIRCRAFT MM 29-23-00. RESULTS WERE SATISFACTORY, THE AIRCRAFT RETURNED TO NORMAL OPERATION. (M)