As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM. ENG 1 BLEED ABN PR RESET CB'S PER MAINTENANCE "AIR PACK 1 REGUL FAULT" ISSUE PERSISTED. PFR INDICATED PRV 1 FAULTING. INSPECTED VALVE & FOUND DIFFICULT TO OPERATE BY HAND. REMOVED & REPLACED PRV 1 PER AMM 36-11-52. LEAK CHE3CK OK. OPS CHECK OK. NO FAULTS NOTED.