As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD Y RSVR LOHYD Y RSRV OVHT INSP AC FOUND LEAK AT PRIORITY VALVE ON POWER TRANSFER UNIT MANIFOLD ON AFT WALL ABOVE KEEL BEEM. REMOVED AND REPLACED YELLOW HYDRAULIC PRIORITY VALVE REF AMM.29-11-33-000/400-0001-A. OPERATED YELLOW HYDRAULIC . NO LEAKS FOUND. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1865545 SN OFF 3451 IPC REFERENCE # 28-13-33-01 VALVE, HYDRAULI OFF 31-2910-9-9001 3451 ON 31-2910-9-9001 2595