As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: HYDRAULIC QUANTITY SHOWS LOW. AIRCRAFT DIVERTED BACK TO DFW. AIRCRAFT DECLARED EMERGENCY. FOUND EVIDENCE OF HYDRAULIC LEAK IN LEFT MAIN LANDING GEAR WHEEL WELL. FOUND CRACK IN LEFT MAIN LANDING GEAR SIDE BRACE HYDRAULIC LINE TO DOWN LOCK ACTUATOR. REMOVED AND REPLACED LINE PER AMM 32-32-04.