As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO SATCOM SELECTION AVAILABLE ON FMC MENU DISPLAY. SATCOM INSTALLED AND CIRCUIT BREAKER CHECKED IN. ACFT GROUNDED. FOUND SATCOM IN A LOCKED UP STATE. IAW FIM TASK 23-15-00-23-801. CYCLED SATCOM CIRCUIT BREAKER, SATCOM RESTORED TO READY STATE.