As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5516, ATL TO CLE. AIRCRAFT RETURNED TO FIELD DUE TO A BLEED 1 LEAK MESSAGE ON EICAS AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A DAMAGED O-RING IN THE BLEED SYSTEM 1 DUCTING AT JOINT 19 BEHIND THE CARGO COMPARTMENT WALL. THE O-RINGS IN THE AFFECTED JOINT WERE REPLACED AND THERE WERE NO FURTHER LEAK MESSAGES.