As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO DEPARTURE DUE TO THE LOSS OF THE LT HYDRAULIC PRESSURE & QUANTITY. LOCATED LEAK AT AT LT ENGINE DRIVEN PUMP PRESSURE LINE PN 7972127-554. SUPPORT CLAMP CHAFED THROUGH LINE. REPLACED LINE, BRACKET AND CLAMPS. THE ACFT HAS RETURNED TO SERVICE.