As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - ACP1 & ACP2 RMP1 & RMP2 UNABLE TO CONNECT HF1 OR HF2 TONE STUCK REANIRED CONNECTING HFVIA RMP2 & ACP3. GROUND TEST RMP 1&2 HF 1 TEST OK. SYSTEM TEST HF #2 CPLR2 (3RE2) FAULT. REMOVED AND REPLACED HF #2 COUPLER TEST OK PER:AMM23-11-36.