As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) O-RING FAILURE BETWEEN MANIFOLD ASSY FIN 291112, PN A2901150800000 AND BOSS FITTING MS21902-10. CAUSING ACFT TURN BACK DUE HYDRAULIC LOSS. IPC REF 24-24-03-04 050, O-RING REPLACED ON MANIFOLD ASSY FIN 291112. DEFECT ITEM NR 1100188.