As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SATCOM LOW GAIN SYSTEM INOPERATIVE. HIGH GAIN SYSTEM OPERATES NORMALLY, RESET, NO HELP. TRIED NEW HIGH POWER AMP LGA SYSTEM AND NEW SAT DATA UNIT, NO HELP. OLD UNITS REINSTALLED. NO BITE FAILURES, CANNOT LOG ON TO LOW GAIN SYSTEM. SUSPECT LOW GAIN ANTENNA PCN 580-2362. ANTENNA 580-2362 PLACED ON OSTF P2003. REPLACED RFU; LOW GAIN NOW OKAY.