As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CLIMBOUT THE EICAS DISPLAYED "BLEED LOSS WING R" AND "PAC K R" MSG. STATUS PAGE DISPLAYED "BLEED PRSOV R" AND "BLEED HPSOV R" MSG. RIGHT DUCT PRESSURE INDICATED 8 PSI. DECESION MADE TO DIVERT TO BOS , EMERGENCY DECLARED AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REACTIVATED PRSOV VALVE IAW AMM 36-00-00-440-801. ACCOMPLISHED DEACTIVATION OF HPSOV IAW AMM 36-00-00-040-802. SEE MIC 8702727 FOR OPS CKS.