As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYD 3 OFF AT FL 340. FLUID AT 2.5 THEN DROP TO 2.1. HYD 3 FAIL CAME ON AFTER GEAR EXTENSION. FLUID DROP TO .9. FOLLOWED QRH FOR HYD 3 FAIL. RH MLG SWIVEL GLAND, AND MAIN LANDING GEAR RETRACT CYLINDER . OPS CK AND LEAK CK OK REF MD11 MM 32-33-21-4, MD11 MM 32-33-20-4.