As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN CRUISE, THE CREW REPORTED RECEIVING A BLEED 1 LEAK MESSAGE ON THE EICAS. MAINTENANCE INSPECTED THE AIRCRAFT AND PRIOR TO RELEASING IT BACK INTO SERVICE. REMOVED AND REPLACED THE BLEED O-RING SEALS AT THE AFT CARGO BAY. AN OPERATIONAL CHECK OF THE BLEED SYSTEM WAS PERFORMED WITH NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.