As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAT -2 RADIO INOPERATIVE, WILL NOT TRANSMIT OR RECEIVE. ALSO WHILE UTILIZING SAT -1 VOLUME CONTROL ON BOTH CAPT & F/O ACP DID NOT WORK. HF/SAT -2 VOL CONTROL CONTROLLED VOLUME OF SAT-1. ACFT GROUNDED. SATCOM NR 1 AND NR 2 COMMUNICATION SYS OPS CK NORMAL REF AMM TASK 23-15-00-730-801.