As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED NR 1 BLEED VALVE FAILED ON EICAS. MX R & R NR 1 HIGH STAGE PRESSURE SWITCH, NR 1 ENGINE BLEED VALVE, AND NR 1 HIGH STAGE VALVE (WHICH IS SUSPECTED PROBLEM, DUE TO HIGH STAGE VALVE CIRCUIT BREAKER TRIPPING) OPS CHECKED SUCCESSFULLY. ACFT WAS APPROVED FOR RETURN TO SERVICE.