As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM STATUS ON LINK STATUS PAGE IS NO COMM. CREW COMMENTS: SATVOICE LOST UPPER EICAS MESSAGE. RESET SATCOM SYS... DATALINK OK, BUT "LOW GAIN" ON CDU WITH "SATCOM VOICE" EICAS MSG...SUSPECT HGA-HPA, NON-STK HNL. REPLACED SDU M1780 PER MM. SATCOM INSTALLATION TEST AND BITE TEST GOOD. NO FAULTS (INFO ONLY, HGA-HPA REPLACED ON SEP 02).