As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2695, THE CREW REPORTED A BLD 2 LK INDICATION ON EICAS. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT, AND REMOVED AND REPLACED THE BLEED DUCT O-RINGS UNDER THE CARGO FLOOR. OPERATIONAL AND LEAK CHECKS PERFORMED SATISFACTORILY, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.