As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO SATCOM PROMPT ON MCDU MENU. ACFT GROUNDED. ACCOMPLISHED FIM TASK 23-15-00-1, VERIFIED SATCOM TRANSCEIVER UNIT HAS RED LIGHT. R & R IRIDIUM TRANSCEIVER IAW AMM 23-15-00/401. UNABLE TO PERFORM A SUCCESSFUL 2-WAYS SATCOM TEST DUE TO BUILDING OBSTRUCTIONS. ON DEFERRAL.