As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 1498 - HYDRAULIC FLUID WAS LOST FROM THE B-SYSTEM WHILE IN-FLIGHT. THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND TWO B-SYSTEM HYDRAULIC LINES IN THE HYDRAULIC BAY CHAFED THROUGH. BOTH LINES WERE REMOVED AND REPLACED. THE HYDRAULIC SYSTEM WAS SERVICED AND LEAK CHECKS WERE GOOD. (X)