What was found
VOICE ON SATCOM NOT WORKING. ACARS CAN USE OK. MSG "LOW GAIN" ON LINE 6 OF CDU. REPLACED SATELLITE DATA UNIT PER MM. CALLED SAMC, OPS CHECKED NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
VOICE ON SATCOM NOT WORKING. ACARS CAN USE OK. MSG "LOW GAIN" ON LINE 6 OF CDU. REPLACED SATELLITE DATA UNIT PER MM. CALLED SAMC, OPS CHECKED NORMAL.