As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AT 4000 FEET (BOM), LOST NR 2 HYDRAULIC SYSTEM. FLIGHT ATTENDANTS REPORTED HOLE IN LEFT WING. DUMPED FUEL AND RETURNED TO BOM. INSPECTION REVEALED TIRE BLOWN SEVERING HYDRAULIC LINES AND DAMAGING WING AND FLAP AREA. WORK IN PROGRESS.