As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 637 29-13 1734641 16MAY19 MDT CLOSE NR 1 HYD QTY IN AMBER AND DROPPING TO ZERO INFLIGHT HYD QTY DROPPED TO ZERO AND FLIGHT REMIANED FOR APPROX 20 MINS. CREW C/W QRH. FACT 16MAY19 12:38 MDT REMOVED AND REPLACED BROKEN HYDRAULIC LINE ON #1 HYDRAULIC PUMP PRESSURE LINE IN REFERENCE WITH AMM 29-10-03.