As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 PACK EICAS STATUS MESSAGE DISPLAYED. NEITHER PAC TEMP CONTROLLERS IN CONTROL OF PACK 1 OR PACK COMPONENT FAILURE OR OVERHEAT OR PACK TRIP DUE TO OVERHEAT OR OUT OF SEQUENCE. THE NR 1 PACK FLOW CONTROL VALVE IS SECURED CLOSED. PACK IS INOPERATIVE EICAS MESSAGE: TURB BYPASS VALVE -1 WIRING FAIL MSG:21118A. RAN PACK SEVERAL TIMES FOR PROLONG PERIODS AND RAN CMC CHECKS. PACK RAN NORMAL WITH NO FAULTS ON STATUS OR THRU CMC.