As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO SAT ON CAPTAIN'S MCDU, CO-PILOTS HAS PROMPT SAT BITE STATUS PAGE 2 SHOWS SCDU-1 FAIL. ACFT GROUNDED. ACCOMPLISHED SATCOM TEST GROUND VERIFICATION IAW TASK 23-15-00-730-801. NO FAULTS NOTED. MADE SUCCESSFUL RADIO CHECKS ON NR 1 & 2 SATCOMS.