As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT A/C PACK PROBLEM AND ASSOC. ETOPS RESTRICTION. FCVS FAILED IN THE CLOSED POSITION. THE RT PACK UPPER FLOW CONTROL VALVE (FCV) WAS DEFERRED OUT OF DEN EARLIER THAT DAY. THE RT PACK LOWER FCV FAILED DURING CLIMB OUT OF IAD. BOTH FCV WERE REPLACED IN JFK. BOTH VALVES HAD FAILED TORQUE MOTOR & DAMAGED BUTTERFLY DISK SEAL RING.