As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT98 - DURING CRUISE, ENROUTE FROM PHL TO LGW, CREW REPORTED THE NR 1 ENGINE HP BLEED VALVE FAILED IN THE CLOSED POSITION. CREW ATTEMPTED TO CORRECT THE PROBLEM BUT THE VALVE REMAINED CLOSED. FLIGHT RETURNED TO FIELD AT PHL AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE APPLIED MEL 36-1101. SUBSEQUENTLY, THE HP BLEED VALVE WAS REPLACED.