As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC DATA LINK FAIL. GROUNDED - YES. CYCLED POWER TO FMC 1 + 2 AND ACARS CMU. CPDLC OPERATION RESTORED AND OBSERVED LOG-ON. ACCOMPLISHED ACARS OPERATIONAL TEST AND SOFTWARE CONFIGURATION CHECKS PER AMM 23-27-00 AND 34-61-00. NO HISTORY PAST 30 DAYS. ETOPS GROUND VERIFICATION SUCCESSFUL, SEAMC JEREMY NOTIFIED.